Diagram sections — 33 (120 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION PASSIVE RESTRAINTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 3) for Lexus IS 250C 2011 List of elements for Automatic A/C Wiring Diagram (1 of 3) for Lexus IS 250C 2011: 75 (right side of dash) power source control ecu A/c amplifier (center of dash) A/c fuse 7.5a A/c pressure sensor (left side of radiator) A/c pressure sensor (suction pipe sub-assembly) (m/t) A/c room temperature sensor (coolant thermistor) (left center of dash) A11 A27 Automatic light control sensor B1 (right front of engine compt) Ba2 Ba3 Bllh Blrh Blw Computer data lines system Cut + D12 D13 D29 Dgs Dgs1 Ecu-ig lh fuse 10a Gnd Hot at all times Htr1 Htr2 Ig+ Ig1d J/c a33 & j80 (right a33 kick panel) J/c a7 & a8 (left side of engine compt) J/c j70 (right side of dash) J1 (left kick panel) J58 J59 J80 Ja3 Ja4 Jk1 Left cowl side j/b (left end of dash) Lh-ig fuse 10a Lh-ig1 relay Lh-ig2 relay Lout Mhtr Mpx+ Mpx- Pnk Pre Psw Rdfg Red Right cowl side j/b (right end of dash) Rout S5-2 S5-3 S5-4 Seat heater switch (if equipped) Seats system Sg-1 Sg-2 Sg-3 Sg-4 Sg-6 Smog ventilation sensor (3.5l) (front of radiator) Sol+ Solar sensor Svs5 Svsg Sw4 Sw5 Tsd Tsl Tsp Tsr Automatic A/C Wiring Diagram (2 of 3) for Lexus IS 250C 2011 List of elements for Automatic A/C Wiring Diagram (2 of 3) for Lexus IS 250C 2011: 42 (right side of dash) 2.5l 3.5l A4 (right rear of engine compt) Acmg Ba2 Can h Can l Computer data lines system Cooler (ambient temperature sensor) thermistor Cooling unit motor sub-assembly w/ fan Crank position sensor (left front of engine) E.f.i. engine coolant temperature sensor (rear of engine) E1 (left rear of engine) Ea1 Engine control module (left front of engine compt) Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Etam Ethw Fan Fan1 fuse 40a Fan2 Fan2 fuse 40a Glw plg1 fuse 50a Glw plg2 fuse 50a Glw rly 1 relay Glw rly 2 relay Gnd Heater fuse 50a Hot at all times J/c a8 (left side of engine compt) J/c e1 (left side of engine compt) Ja4 Lck1 Nca Ne+ Ne- Pnk Red Tam Thw Water by-pass glow plug Automatic A/C Wiring Diagram (3 of 3) for Lexus IS 250C 2011 List of elements for Automatic A/C Wiring Diagram (3 of 3) for Lexus IS 250C 2011: 40 (left side of engine compt) j/c a10 & e1 2.5l 3.5l A/c amplifier (center of dash) A/c blower assembly A/c comp fuse 7.5a A/c comp relay A/c compressor A/c evaporator temperature sensor A10 A2 (left rear of engine compt) Ae1 B bus B2 (left front of engine compt) Ba1 Bus Bus g Connector housing color (black) Connector housing color (green) Connector housing color (natural) Connector housing color (red) Cooling fan motor 1 (left front of engine compt) Cooling fan motor 2 (right front of engine compt) Damper servo motor (air inlet) Damper servo motor (air mix driver side) Damper servo motor (air mix front passenger side) Damper servo motor (air vent mode) Damper servo motor (cool air bypass) E1 (left rear of engine) Engine room r/b 2 (right side of engine compt) Fan 1 relay Fan 2 relay Fan 3 relay Flow control valve Hot at all times J/c a7 & a8 (left side of engine compt) J/c a9 (left side of engine compt) Lock sensor Magnetic clutch Red
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 76 (left rear of engine compt) a2 +bs A/t A12 A24 A25 A3 (left rear of engine compt) A33 Abs 1 fuse 50a Abs 2 fuse 30a Ap1 Aq1 Brake actuator assembly Brake pedal load sensing switch (left side of dash) Buzzer Canh Canl Computer data lines system Csw D12 D14 Data link connector (dlc) 3 (left side of dash) Ecu-ig rh fuse 10a Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Fl+ Fl- Flo Fr+ Fr- Fro Fsw+ Gauge fuse 7.5a Gnd1 Gnd2 Hot at all times Hot w/ ig2 relay energized Ig1 Ig1d Interior lights system J/c a15 (left rear corner of engine compt) J/c a20 (left end of dash) J/c a33 & j80 (right kick panel) J/c a9 (left side of engine compt) J/c j27 (left side of dash) J4 (right kick panel) J80 Ja3 L10 Left front speed sensor (left front wheel hub assembly) Left rear speed sensor M/t Mpx-b fuse 10a Parking brake switch (below center console) Pkb Pnk Power source control ecu (right side of dash) Red Rh- ig1 relay Right cowl side j/b (right end of dash) Right front speed sensor (right front wheel hub assembly) Right rear speed sensor Rl+ Rl- Rr+ Rr- Skid control buzzer (dynamic radar cruise control) (left side of dash) Sp1 Stop sw fuse 7.5a Stp1 Stp2 Stpo Va14 Vsc off switch (center of dash) Wa14 Xp1 Yq1 Anti-lock Brakes Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 60 (left side of dash) A10 A29 Abs ind Ae1 Bat Brake ind Brk-lp relay Canh Canl Combination meter assembly Computer data lines system D12 D13 D29 Ecu-ig lh fuse 10a Engine control module (left front of engine compt) Engine room r/b 2 (left side of engine compt) Ess Gnd Headlamp leveling ecu (left kick panel) Hot at all times Ig+ Ig2 or dome +b Ind master Input circuit J/c a29 & j10 (left kick panel) J/c a33 (right kick panel) J/c a7 & a8 (left side of engine compt) J/c j27 (left side of dash) J/c j70 (right side of dash) J1 (left kick panel) J10 J2 (under center console) J34 J4 (right kick panel) Ja3 Left cowl side j/b (left end of dash) Lh- ig1 relay Lh- ig2 relay Lh-ig fuse 10a Micro computer Micro computer (sub) Mpx+ Mpx- Multi information display Out Park/neutral position switch assembly (a/t) (on transmission) Pnk Red Right cowl side j/b (right end of dash) Slip ind Slip off ind Spdl Spdr Steering sensor (on steering column) Stop lamp control relay (left side of dash) Stop lamp switch Stp Yaw rate sensor (under center console)
ANTI-THEFT Forced Entry Wiring Diagram (1 of 5) for Lexus IS 250C 2011 List of elements for Forced Entry Wiring Diagram (1 of 5) for Lexus IS 250C 2011: 74 2.5l a/t hid type w/ headlight cleaner A24 A36 Acc Acc fuse 7.5a Act+ Act- Actd Altb Batb Becu Bzr Computer data lines system D10 Dcty Diode (luggage compt lamp) (left side of trunk) Display & navigation module display Ecu-ig rh fuse 10a Except 2.5l a/t hid type w/ headlight cleaner Fr door rh fuse 20a Gnd Gnd1 Gnd2 Haz Headlights system Hot at all times Hot in on or acc Hot in on or start Hrly Ind Integration control & panel assembly J/c a15 (left rear corner of engine compt) J/c j27 (left side of dash) J17 J18 J2 (under center console) J21 J24 J3 (under center console) J50 J61 J74 J75 Jp2 Jq1 Key lock Key unlock Kul L1 (center of trunk) Left front door courtesy light switch assembly Left front door lock assembly (driver's door) Lgcy Lp1 Lsw Lswp Mpx1 Mpx2 Mq1 Pcty Power window regulator master switch assembly Q1 (left "b" pillar) Right cowl side j/b (right end of dash) Right front door courtesy light switch assembly Right front door lock assembly (front passenger's door) Right main body ecu Security horn assembly (right rear of engine compt) Security indicator light Seuc Ti & te fuse 20a Tr+ Unlock detection W/ navigation W/o navigation Wireless door lock buzzer (inside left front wheelwell) Forced Entry Wiring Diagram (2 of 5) for Lexus IS 250C 2011 List of elements for Forced Entry Wiring Diagram (2 of 5) for Lexus IS 250C 2011: 41 (w/o memory) A12 A30 Acty Bdcy Computer data lines system D11 D12 D18 Door Fr door lh fuse 20a Gnd Haz Hot at all times Hot in on or start J/c j71 (right side of dash) J/c j80 (right side of dash) J/c m14 (driver's door) J1 (left kick panel) J2 (under center console) J29 Jq1 Jr2 Left cowl side j/b (left end of dash) Left main body ecu Lh-ig fuse 10a Light left dome Light right dome Lpsw Luggage compartment door lock assembly Luggage electrical key switch (center rear of trunk) Map light assembly Mpx1 Mpx2 Mpxb Mq1 Mq2 Q2 (left side of trunk) Qh1 Right cowl side j/b (right end of dash) Turn signal flasher assembly (left side of dash) Forced Entry Wiring Diagram (3 of 5) for Lexus IS 250C 2011 List of elements for Forced Entry Wiring Diagram (3 of 5) for Lexus IS 250C 2011: 35 (right rear of vehicle) p2 (w/o memory) A2 (left rear of engine compt) A29 Ap1 Aq1 B1 (right front of engine compt) Computer data lines system Data Dome fuse 10a Door control receiver (center of trunk) Engine hood courtesy switch (center front of engine compt) Engine room j/b 2 (left side of engine compt) Engine room r/b 1 (right rear of engine compt) Foot light Front controller Gnd Horn (high) (front of radiator) Horn (low) (front of radiator) Horn fuse 10a Horn relay Hot at all times J/c a29 & j10 (left kick panel) a29 J/c l11 (front passenger's door) l11 J/c m14 (driver's door) J10 L11 Left outer rear view mirror Lp1 Mpx-b fuse 10a Mq1 Qp2 Red Right outer rear view mirror Rssi Forced Entry Wiring Diagram (4 of 5) for Lexus IS 250C 2011 List of elements for Forced Entry Wiring Diagram (4 of 5) for Lexus IS 250C 2011: 66 (front passenger's door) j/c l11 (left rear seat) rear indoor electrical key oscillator (right side of crossmember) (right side of luggage compt) outside luggage electrical key antenna (right side of trunk) certification ecu (under center console) console electrical key oscillator (w/o memory) +b1 Acc Agnd Ant1 Ant2 Antenna coil Cg1b Cg2b Cg5b Cg6b Cg7b Cg8b Clg Clg1 Clg2 Clg5 Clg6 Clg7 Clg8 Clgb Code Computer data lines system Engine switch (center of dash) Gnd Indoor luggage compartment electrical key oscillator (left side of trunk) Jp2 Left front door electrical key oscillator (in left front door) Left front door handle electrical key antenna (in left front door) Lin Lp2 Mpx1 Mpx2 Mq2 P1 (right side of crossmember) Pnk Q1 (left "b" pillar) Qp1 Qp2 Rc0 Rda Red Right front door electrical key oscillator (in right front door) Right front door handle electrical key antenna (in right front door) Rssi Sel Sel1 Sel2 Sen1 Sen2 Sens Sgt Trg+ Trg- Tsw1 Tsw2 Txct Vc5 Nli Omi Forced Entry Wiring Diagram (5 of 5) for Lexus IS 250C 2011 List of elements for Forced Entry Wiring Diagram (5 of 5) for Lexus IS 250C 2011: 73 A25 A27 A29 Accd Am1 Am2 Am2 fuse 7.5a Canh Canl Combination meter assembly Computer data lines system Ctsw D11 Door ind Efii Efio Engine control module (left front of engine compt) Gauge fuse 7.5a Gnd Gnd2 Hot at all times Hot in on or start Id code box (center of dash) Ig1d Ig2 or dome +b Ig2d Ign fuse 10a Imi Imo Inds Indw Input circuit J/c a29 & j10 (left kick panel) J/c a33 (right kick panel) J/c j10 (left kick panel) J/c j71 (right side of dash) J/c j80 (right side of dash) J10 J2 (under center console) Ja3 Jp2 Left cowl side j/b (left end of dash) Lin Lin1 Master ind Micro computer Micro computer (sub) Mpx1 Mpx2 Multi information display Pnk Power distribution system Power source control ecu (right side of dash) Red Right cowl side j/b (right end of dash) Security fuse 7.5a Shift interlock system Sksw Slp Slr+ Spd Ssw1 Ssw2 Starting/charging system Steering lock actuator (steering column) Stop lamp switch (a/t) (left side of dash) Stop sw fuse 7.5a Stp Str1 Str2 Stsw Swil Tach
BODY CONTROL MODULES Body ECU Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Body ECU Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 42 A15 A16 A19 A30 Acty Back Bdcy Bkup Combination meter assembly D18 Engine room j/b 2 (left side of engine compt) Exterior lights system Fr wip fuse 30a From right cowl side j/b (diagram 1 of 2) Front controller Gnd Hot in run or start Ile1 Interior lights system J/c j27 (left side of dash) J1 (left kick panel) J2 (under center console) J23 J34 Left cowl side j/b (left end of dash) Left main body ecu (left end of dash) Lh-ig fuse 10a Lpsw Mpx1 Mpx2 Mpxb Navigation system Pnk Q36 S/m S/s Sftp Sgnd Sliding roof control ecu (center of trunk) Trunk, tailgate, fuel doors system Wig Wiper/washer system Front Controller Wiring Diagram for Lexus IS 250C 2011 List of elements for Front Controller Wiring Diagram for Lexus IS 250C 2011: 42 (except hid) (hid type) (hid) 20a A2 (left rear of engine compt) Body ecu circuit D15 D18 Ecu-ig lh fuse 10a Engine room j/b 2 (left side of engine compt) Engine room r/b 1 (right rear of engine compt) Exterior lights system Front controller G12 G13 H-lp upr fuse 15a Headlights system Horn fuse 10a Horn relay Horns system Hot at all times Hot in on or start Instrument cluster system Interior lights system J/c j27 (left side of dash) J/c q7 & u1 (under driver's seat) Jr2 Left cowl side j/b (left end of dash) Left front seat position control ecu & switch (w/ memory) (under driver's seat) Left outer mirror control ecu (left front door) M10 Mpx Mpx-b fuse 10a Mpx1 Mpx2 Mq1 Power source control ecu (right side of dash) Rain sensor (front center of roof at windshield) Right cowl side j/b (right end of dash) W/ auto wiper W/ memory Wiper/washer system Integration Control and Panel Wiring Diagram for Lexus IS 250C 2011 List of elements for Integration Control and Panel Wiring Diagram for Lexus IS 250C 2011: 30 A24 Acc Acc fuse 7.5a Anti-theft system D12 D14 D27 Ecu ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Exterior lights system Hot at all times Hot in on or acc Hot in on or start Ig+ Ill+ Ill- Integration control & panel assembly Interior lights system J/c j27 (left side of dash) J1 (left kick panel) Left cowl side j/b (left end of dash) Mpx-b fuse 10a P-ab Paon Pnk Red Right cowl side j/b (right end of dash) Sound systems Tx+ Tx-
COMPUTER DATA LINES Data Link Connector Wiring Diagram for Lexus IS 250C 2011 List of elements for Data Link Connector Wiring Diagram for Lexus IS 250C 2011: 41 A10 Bat Brake actuator assembly Canh Canl Combination meter assembly D10 D11 D28 Data link connector (dlc) 3 (left side of dash) Dcm (telematics transceiver) (right side of dash) Dia Display & navigation module display (if equipped) E1 (left rear of engine) Engine control module (left front of engine compt) High/low bus circuit Hot at all times J/c a10 & e1 (left side of engine compt) J/c j10 (left kick panel) J/c j27 (left side of dash) J/c j70 (right side of dash) J/c j80 (right side of dash) J1 (left kick panel) J101 J34 J50 J74 Ja3 Jp2 L10 Left cowl side j/b (left end of dash) Main body ecu Network gateway ecu (right side of dash) Obd fuse 7.5a Obd2 Occupant classification ecu (w/ occupant classification system) (under front passenger's seat) Pt2 Red Right cowl side j/b (right end of dash) Sil Tac High/Low Bus Wiring Diagram (1 of 3) for Lexus IS 250C 2011 List of elements for High/Low Bus Wiring Diagram (1 of 3) for Lexus IS 250C 2011: 53 (right kick panel) j4 A/c amplifier (center of dash) A20 A24 Acc Acc fuse 7.5a Batt Ca1h Ca1l Canh Canl Clearance warning ecu (w/ parking assist) (left side of trunk) Combination meter D12 D14 D27 Data link connector (dlc) 3 (left side of dash) Ecu-ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Gnd Gtx+ Gtx- Hot at all times Hot in on or acc Input circuit J/c j27 (left side of dash) J/c j71 (right side of dash) J/c j80 (right side of dash) J1 (left kick panel) J21 J34 J58 J75 Jq1 Left cowl side j/b (left end of dash) Main body ecu Micro computer Mpd1 Mpd2 Mpi1 Mpi2 Mpx+ Mpx- Mpx-b fuse 10a Mpx1 Mpx2 Network gateway ecu (right side of dash) Pnk Red Rh- ig 1 relay Right cowl side j/b (right end of dash) Sil Tire pressure warning ecu (if equipped) (center of dash) High/Low Bus Wiring Diagram (2 of 3) for Lexus IS 250C 2011 List of elements for High/Low Bus Wiring Diagram (2 of 3) for Lexus IS 250C 2011: 34 (center of trunk) sliding roof control ecu (on steering column) (if equipped) multiplex tilt & telescopic ecu (right front door) (w/ memory) right outer mirror control ecu (right side of dash) power source control ecu (right side of trunk) certification ecu assembly (under front passenger's seat) (w/ memory) right front position control ecu & switch A31 Canh Canl Display & navigation module display (w/ navigation system) Ig1d J/c j1 (left kick panel) J/c j2 (left kick panel) J/c p24 (right side of trunk) J26 J50 Ja4 Jp2 Lp1 Mpx1 Mpx2 Mq1 P33 P49 Pnk Power steering ecu (right rear of engine compt) Power window regulator master switch assembly Pt1 Q36 Qp2 Red Right front power window regulator switch assembly Seat belt control ecu (w/ pre-collision system) (left side of trunk) Windshield wiper switch assembly High/Low Bus Wiring Diagram (3 of 3) for Lexus IS 250C 2011 List of elements for High/Low Bus Wiring Diagram (3 of 3) for Lexus IS 250C 2011: 54 (left front door) (w/ memory) left outer mirror control ecu A30 Atx+ Atx- Brake actuator assembly Canh Canl Center air bag sensor assembly (under center console) D15 Display & navigation module display Distance control ecu (w/ dynamic radar cruise control) (left side of dash) Engine control module (left front of engine compt) Engine room j/b 2 (left side of engine compt) Front controller Integration control & panel assembly (w/o navigation) J/c q7 & u1 (under driver's seat) J100 J47 J52 J62 J95 J96 J98 J99 Ja3 Jp1 Jr2 Left cowl side j/b (left end of dash) Left front position control ecu & switch (w/ memory) (under driver's seat) M10 Main body ecu Mpx Mpx1 Mpx2 Mq1 Multimedia interface ecu (lower right side of dash) P30 Pnk Radio receiver assembly Rain sensor (w/ auto wiper) (front center of roof at windshield) Red Steering sensor (on steering column) Stereo component amplifier (w/o navigation) (right side of trunk) Tx+ Tx- Tx1+ Tx1- Tx2+ Tx2- Txm+ Txm- W/ navigation W/o navigation Yaw rate sensor (under center console)
COOLING FAN Cooling Fan Wiring Diagram for Lexus IS 250C 2011 List of elements for Cooling Fan Wiring Diagram for Lexus IS 250C 2011: 59 (left side of engine compt) engine room r/b 2 2.5l 3.5l A/c amplifier (center of dash) A/c pressure sensor (left side of radiator) A/c pressure sensor (suction pipe sub-assembly) (m/t) A3 (left rear of engine compt) B2 (left front of engine compt) Ba1 Ba3 Can h Can l Computer data lines system Cooling fan motor 1 (left front of engine compt) Cooling fan motor 2 (right front of engine compt) Crank position sensor (left front of engine) Cut+ D12 D13 E.f.i. engine coolant temperature sensor (rear of engine) E1 (left rear of engine) Engine control module (left front of engine compt) Engine room j/b 1 (right rear of engine compt) Ethw Fan Fan 1 relay Fan 2 relay Fan 3 relay Fan1 fuse 40a Fan2 Fan2 fuse 40a Hot at all times Ig1d J/c a7 & a8 (left side of a7 engine compt) J/c a7 & a8 (left side of engine compt) J/c e1 (left side of engine compt) J1 (left kick panel) J58 Ja3 Ja4 Left cowl side j/b (left end of dash) Lh-ig fuse 10a Lh-ig1 relay Mpx+ Mpx- Nca Ne+ Ne- Pnk Power source control ecu (right side of dash) Pre Psw Red Right cowl side j/b (right end of dash) S5-2 S5-3 Sg-2 Sg-3 Thw
CRUISE CONTROL Cruise Control Wiring Diagram, with Dynamic Radar Controls (1 of 3) for Lexus IS 250C 2011 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (1 of 3) for Lexus IS 250C 2011: 65 +b1 +res -set A10 A2 (left rear of engine compt) Accelerator position sensor (accelerator pedal assembly (left side of dash) Anti-lock brakes system Batt Cancel Canh Canl Cchg Ccs Computer data lines system Control steering right distance Cruise control main switch D12 D13 E1 (left rear of engine) Efi fuse 25a Efi main relay Engine control module (left front of engine compt) Engine room j/b 2 (left side of engine compt) Epa Epa2 Gauge fuse 7.5a Hot at all times Hot w/ ig2 relay energized Ig1d Ign fuse 10a Igsw J/c a10 & e1 (left side of engine compt) J/c a29 (left kick panel) J/c a9 (left side of engine compt) J/c j27 (left side of dash) J/c j70 (right side of dash) J24 J4 (right kick panel) Ja3 Lgnd Mode Mrel On/off Pad switch Paddle shift switch Pnk Power source control ecu (right side of dash) Red Rh-ig fuse 7.5a Rh-ig1 relay Right cowl side j/b (right end of dash) Right paddle shift switch Sftd Sftu Shift switch left paddle Spd Spiral cable sub- assembly (under steering wheel) St1- Steering pad switch assembly Stop lamp switch (left side of dash) Stp Vcp2 Vcpa Vpa Vpa2 Cruise Control Wiring Diagram, with Dynamic Radar Controls (2 of 3) for Lexus IS 250C 2011 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (2 of 3) for Lexus IS 250C 2011: 51 (left front of engine compt) engine control module +bm A10 A33 Ae1 Combination meter assembly Computer data lines system Cruise ind D12 D13 D29 E01 E02 E03 E1 (left rear of engine) E2 (right rear of engine) Ecu-ig lh fuse 10a Engine room r/b 1 (right rear of engine compt) Engine room r/b 2 (left side of engine compt) Etcs fuse 10a Ge01 Hot at all times Ig+ Ig2 or dome +b Input circuit J/c a10 & e1 (left side of engine compt) J/c a33 & j80 (right kick panel) J/c j27 (left side of dash) J1 (left kick panel) J2 (under center console) J34 J80 Left cowl side j/b (left end of dash) Lh-ig fuse 10a Lh-ig1 relay Lh-ig2 relay Me01 Micro computer Mpx+ Mpx- Mpx-b fuse 10a Nca Pnk Red Right cowl side j/b (right end of dash) Speedometer Throttle w/ motor body assembly Transmission control switch (below center console) Vc2 Vta1 Vta2 Cruise Control Wiring Diagram, with Dynamic Radar Controls (3 of 3) for Lexus IS 250C 2011 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (3 of 3) for Lexus IS 250C 2011: 62 (left front wheel hub assembly) (left side of engine compt) j/c e1 A10 Ap1 Aq1 Ba2 Brake actuator assembly Ca1h Ca1l Canh Canl Computer data lines system Distance control ecu (left side of dash) E1 (left rear of engine) Electronically controlled transmission solenoid (on transmission) Engine control module (left front of engine compt) Eoil Fl+ Fl- Fr+ Fr- Gnd Igb J/c a10 & e1 (left side of engine compt) J/c e49 (left side of engine compt) Ja3 Ja4 Left front speed sensor Left rear speed sensor Lgnd Lrdd Lrrd Millimeter wave radar sensor (front of vehicle) Mode Mpi1 Mpi2 Network gateway ecu (right side of dash) Oil Park/neutral position switch (on transmission) Pnk Red Right front speed sensor (right front wheel hub assembly) Right rear speed sensor Rl+ Rl- Rr+ Rr- Sgnd Sl1+ Sl1+ red Sl1- Sl2+ Sl2- Slt+ Slt- Slu+ Slu- Sp1 Va1 Wa1 Yp1 Yq1 Cruise Control Wiring Diagram, without Dynamic Radar Controls (1 of 3) for Lexus IS 250C 2011 List of elements for Cruise Control Wiring Diagram, without Dynamic Radar Controls (1 of 3) for Lexus IS 250C 2011: 63 (left kick panel) j/c a29 +b1 +res -set A10 A2 (left rear of engine compt) Accelerator position sensor (accelerator pedal assembly) (left side of dash) Batt Cancel Canh Canl Ccs Clsw Computer data lines system Cruise control main switch D12 D13 E1 (left rear of engine) Efi fuse 25a Efi main relay Engine control module (left front of engine compt) Engine room j/b 2 (left side of engine compt) Epa Epa2 Gauge fuse 7.5a Hot at all times Hot w/ ig2 relay energized Ig1d Ign fuse 10a Igsw J/c a10 & e1 (left side of engine compt) J/c a33 (right kick panel) J/c a9 (left side of engine compt) J/c j27 (left side of dash) J/c j70 (right side of dash) J24 J4 (right kick panel) Ja3 Left paddle shift switch Mrel On/off Paddle shift switch (a/t) Pnk Power source control ecu (right side of dash) Red Rh-ig fuse 7.5a Rh-ig1 relay Right cowl side j/b (right end of dash) Right paddle shift switch Sftd Sftu Spd Spiral cable sub- assembly (under steering wheel) St1- Steering pad switch Stop lamp switch (left side of dash) Stop sw fuse 7.5a Stp Transmission control switch (a/t) (below center console) Vcp2 Vcpa Vpa Vpa2 Cruise Control Wiring Diagram, without Dynamic Radar Controls (2 of 3) for Lexus IS 250C 2011 List of elements for Cruise Control Wiring Diagram, without Dynamic Radar Controls (2 of 3) for Lexus IS 250C 2011: 48 +bm A10 A33 Ae1 Clutch switch assembly (m/t) Combination meter assembly Computer data lines system Cruise ind D12 D13 E01 E02 E03 E1 (left rear of engine) E2 (right rear of engine) Engine control module (left front of engine compt) Engine room r/b 1 (right rear of engine compt) Engine room r/b 2 (left side of engine compt) Etcs fuse 10a Ge01 Hot at all times Ig+ Ig2 or dome +b Input circuit J/c a10 & e1 (left side of engine compt) J/c a33 & j80 (right kick panel) J/c a7 & a8 (left side of engine compt) J/c j27 (left side of dash) J1 (left kick panel) J2 (under center console) J34 J80 Left cowl side j/b (left end of dash) Lh-ig fuse 10a Lh-ig1 relay Me01 Micro computer Mpx+ Mpx- Mpx-b fuse 10a Nca Pnk Right cowl side j/b (right end of dash) Speedometer Throttle w/ motor body assembly Vc2 Vta1 Vta2 Cruise Control Wiring Diagram, without Dynamic Radar Controls (3 of 3) for Lexus IS 250C 2011 List of elements for Cruise Control Wiring Diagram, without Dynamic Radar Controls (3 of 3) for Lexus IS 250C 2011: 48 (a/t) (on transmission) (left front wheel hub assembly) left front speed sensor (left rear of engine) e1 (left side of engine compt) j/c e1 (right front wheel hub assembly) right front speed sensor Ap1 Aq1 Brake actuator assembly Ca1h Ca1l Canh Canl Computer data lines system Electronically controlled transmission solenoid Engine control module (left front of engine compt) Eoil Fl+ Fl- Fr+ Fr- J/c e49 (left side of engine compt) Left rear speed sensor Mpi1 Mpi2 Network gateway ecu (right side of dash) Oil Park/neutral position switch (a/t) (on transmission) Pnk Red Right rear speed sensor Rl+ Rl- Rr+ Rr- Sl1+ Sl1+ red Sl1- Sl2+ Sl2- Slt+ Slt- Slu+ Slu- Sp1 Va1 Wa1 Yp1 Yq1
DEFOGGERS Front Deicer Wiring Diagram for Lexus IS 250C 2011 List of elements for Front Deicer Wiring Diagram for Lexus IS 250C 2011: 20 D13 Deicer fuse 25a Deicer relay Engine room r/b 2 (left side of engine compt) Engine room r/b 3 (left rear of engine compt) Front wiper deicer (windshield glass) (left rear corner of engine compt) Front wiper deicer switch Hot at all times Hot in on or start Ill+ Ill- Interior lights system J/c a15 (left rear corner of engine compt) J/c j70 (right side of dash) J1 (left kick panel) Ja3 Left cowl side j/b (left end of dash) Red Rh-ig fuse 7.5a Right cowl side j/b (right end of dash) Rear Defogger & Heated Mirrors Wiring Diagram for Lexus IS 250C 2011 List of elements for Rear Defogger & Heated Mirrors Wiring Diagram for Lexus IS 250C 2011: 48 A/c amplifier (center of dash) A/c fuse 7.5a A27 D12 D13 D29 Defog fuse 30a Defog relay Early production only Ecu- ig lh fuse 10a Gnd Hot at all times Ig+ Ig1d J/c j70 (right side of dash) J1 (left kick panel) J10 J28 Jq1 Left cowl side j/b (left end of dash) Left outer rear view mirror assembly Lh- ig 1 relay Lh- ig 2 relay Lh-ig fuse 10a Lp2 Luggage room r/b (left side of trunk) Mhtr Mir htr fuse 15a Mir htr relay Mirror heater Mq2 Noise filter Noise filter (defogger) (left side of luggage compt) P1 (right side of crossmember) Pnk Power source control ecu (right side of dash) Q1 (left "b" pillar) Q2 (left side of trunk) Qp2 Qg1 Qk2 Qk3 Rdfg Rear window defogger (back door glass) g2 Rear window defogger switch Red Right cowl side j/b (right end of dash) Right outer rear view mirror assembly
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Lexus IS 250C 2011 List of elements for Electronic Power Steering Wiring Diagram for Lexus IS 250C 2011: 64 A10 A24 A25 A31 A5 (right rear of engine compt) Bat Brake actuator assembly C1 (front of engine) Ca1h Ca1l Canh Canl Combination meter assembly Computer data lines system Computer micro Crank position sensor (left front of engine) D12 D14 E1 (left rear of engine) Ecu-ig lh fuse 10a Ecu-ig rh fuse 10a Engine control module (left front of engine compt) Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Eps fuse 80a Ess Gauge fuse 7.5a Hot at all times Hot in on or start Incs Input circuit Insn J/c e1 (left side of engine compt) J/c j27 (left side of dash) J2 (under center console) J34 J4 (right kick panel) Left cowl side j/b (left end of dash) Mpi1 Mpi2 Mpx-b fuse 10a Nca Ne+ Ne- Network gateway ecu (right side of dash) Oucs Ousn Pgnd Pig Pnk Power steering ecu (right rear of engine compt) Power steering ind Power steering motor (lower front of engine compt) Power steering torque sensor (left front of engine) Red Right cowl side j/b (right end of dash) Rzcs Rzg Rzsn Rzv Srzg Steering sensor (on steering column) Tqg1 Tqg2 Trqv Power Tilt Steering Column Wiring Diagram for Lexus IS 250C 2011 List of elements for Power Tilt Steering Column Wiring Diagram for Lexus IS 250C 2011: 44 A15 A18 A24 Computer data lines system D12 D14 Down Ecu-ig rh fuse 10a Ecub Engine room r/b 1 (right rear of engine compt) Gnd Headlamp dimmer switch assembly Hot at all times Hot in on or start J/c j27 (left side of dash) J2 (under center console) J26 J4 (right kick panel) Left cowl side j/b (left end of dash) Long Mpx-b fuse 10a Mpx1 Mpx2 Msw Multiplex tilt & telescopic ecu (on steering column) Pnk Red Right cowl side j/b (right end of dash) Short Switch Telescopic motor Telescopic sensor Tem+ Tem- Tes Ti & te fuse 20a Tilt & telescopic Tilt motor (at steering column) Tim+ Tim- Tis Vce Vci Windshield wiper switch assembly
ENGINE PERFORMANCE
2.5L 2.5L, Engine Performance Wiring Diagram (1 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 8) for Lexus IS 250C 2011: 73 (left center of front bumper fascia) ambient temperature sensor (left side of engine compt) engine room j/b 2 +b1 A29 Accelerator position sensor (left side of dash) Accr Acmg Air conditioning system Ba2 Batt C/opn relay Canh Canl Cchg Ccs Clsw Computer data lines system Cooling fans system Cruise control system Ctsw Efi 2 relay Efi fuse 25a Efi main relay Efii Efio Engine control module (left front of engine compt) Epa Epa2 F/pmp fuse 25a Fan Fan2 Fpr Heated oxygen sensor (bank 1 sensor 2) (right side exhaust system) Heated oxygen sensor (bank 2 sensor 2) (left side exhaust system) Hot at all times Ht1b Ht2b Id code box (center of dash) Igsw Imi Imo Irel J/c a29 & j10 (left kick panel) J10 Ja3 Ksw Mpmp Mrel Nca O1b- O2b- Ox1b Ox2b Pnk Power source control ecu (right side of dash) Ppmp Red Sftd Sftu Sksw Spd St1- Sta Starting/charging system Stp Stsw Tach Tam Vcp2 Vcpa Vpa Vpa2 Vpmp 2.5L, Engine Performance Wiring Diagram (2 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 8) for Lexus IS 250C 2011: 34 (forward of left rear wheel) fuel pump & gauge assembly (left kick panel) j/c a29 & j10 (left side of engine compt) engine room r/b 2 (left side of engine compt) j/c a7 & a8 (right side of engine compt) fuel pump resistor A2 (left rear of engine compt) A29 Ae1 Aq1 Canister pressure sensor Canister pump assembly Efi 2 fuse 10a Etcs fuse 10a F/pmp relay Hot at all times Hot w/ ig 2 relay energized Ig2 fuse 10a Instrument cluster system J/c a9 (left side of engine compt) J10 Jq1 Leak detection pump Nca Pnk Pump Q1 (left "b" pillar) Stop lamp switch (left side of dash) Vent valve Vvl+ Vvl- Vvr+ Vvr- Vvt sensor (bank 1 intake side) (right front of engine) Vvt sensor (bank 2 intake side) (front of left cylinder head) 2.5L, Engine Performance Wiring Diagram (3 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 8) for Lexus IS 250C 2011: 52 (below center console) transmission control switch (right end of dash) right cowl side j/b +bm A10 A24 A25 Ae1 Air conditioning system Camshaft timing oil control valve (bank 1 exhaust) (right cylinder head) Camshaft timing oil control valve (bank 1 intake) (right cylinder head) Crankshaft position sensor (left front of engine) D13 E03 E2 (right rear of engine) Engine control module (left front of engine compt) Gauge fuse 7.5a Ge01 Hot at all times Hot w/ ig 2 relay energized Hot w/ rh-ig1 relay energized Ign fuse 10a Igt2 Igt5 Igt6 J/c a33 (right side of dash) J/c j70 (right side of dash) J2 (under center console) J4 (right kick panel) Ja3 Lck1 Me01 Nca Ne+ Ne- Oc1+ Oc1- Oe1+ Oe1- Pnk Prg Red Rh-ig fuse 7.5a Sftd Sftu Stj1 Stop sw fuse 7.5a Vta1 Vta2 Vv1+ Vv1- Vv2+ Vv2- 2.5L, Engine Performance Wiring Diagram (4 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (4 of 8) for Lexus IS 250C 2011: 57 (a/t) (left side of dash) j/c j27 (m/t) A/t A10 A29 Ae1 Combination meter Computer data lines system Cruise control system Dome fuse 10a E1 (left rear of engine) Ect power ind Ect snow ind Efi Engine oil level sensor (bottom of engine) Engine room r/b 1 (right rear of engine compt) Etcs snow ind Hot at all times Ig+ Ig2 or dome +b Input circuit Interior lights system J/c a10 & e1 (left side of engine compt) J/c j10 & a29 (left kick panel) J/c j10 & a29 (right side of dash) J/c j70 (right side of dash) J1 (left kick panel) J10 J21 J34 J35 J75 Lamp indicator malfunction Left cowl side j/b (left end of dash) M/t Main body ecu (right end of dash) Master ind Micro computer Micro computer (sub) Mpx+ Mpx- Mpx-b fuse 10a Mpx1 Mpx2 Multi information display Nca Pattern select switch assembly 1 Pnk Pwr Red Right cowl side j/b (right end of dash) Snow Snow etcs Speedometer Tachometer Throttle position switch assembly 2.5L, Engine Performance Wiring Diagram (5 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (5 of 8) for Lexus IS 250C 2011: 31 (rear of engine) e.f.i engine coolant temperature sensor A/f fuse 15a A/f relay Ae1 E2 (right rear of engine) Engine room j/b 2 (left side of engine compt) Engine room r/b 2 (left side of engine compt) Gnd Hot at all times Igf1 Igf2 Ignition coil 1 (top of engine) Ignition coil 2 (top of engine) Ignition coil 3 (top of engine) Ignition coil 4 (top of engine) Ignition coil 5 (top of engine) Ignition coil 6 (top of engine) Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 Inj fuse 20a Inj relay Nca Pnk Red Throttle w/ motor body assembly Ze1 Ze2 2.5L, Engine Performance Wiring Diagram (6 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (6 of 8) for Lexus IS 250C 2011: 41 (front of engine) h1 (front of engine) i1 (fuel injectors 1, 3 & 5: right side of engine) (fuel injectors 2, 4 & 6: left side of engine) fuel injectors (direct injection) (right front of engine) injector driver +b2 A1a+ A1a- A2a+ A2a- Air fuel ratio sensor (bank 1 sensor 1) (right rear of engine) Air fuel ratio sensor (bank 2 sensor 1) (left rear of engine) E26 E58 Eg1 Fp+ Fp- Fpd Fpf1 Fuel pressure sensor (rear of engine) Ha1a Ha2a Ij1+ Ij1- Ij2+ Ij2- Ij3+ Ij3- Ij4+ Ij4- Ij5+ Ij5- Ij6+ Ij6- Injf Knock control sensor (bank 1) (top right side of engine) Knock control sensor (bank 2) (top left side of engine) Nca Pnk Red Spill control valve Swirl control valve actuator (rear of engine) 2.5L, Engine Performance Wiring Diagram (7 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (7 of 8) for Lexus IS 250C 2011: 35 (left rear of engine) cold start fuel injector (on transmission) park/neutral position switch A1a+ A1a- A2a+ A2a- Ae1 E1 (left rear of engine) E2 (right rear of engine) E2x Engine control module (left front of engine compt) Eo4 Eo5 Ev2+ Ev2- Ex+ Ex- Fpd Fpf1 Ha1a Ha2a Hot w/ lh-ig1 relay energized Ia1+ Ia1- Iac1 Injf Left cowl side j/b (left end of dash) Lh-ig fuse 10a Pnk Red Swirl control valve sensor (rear of engine) Vc2 Vcx Vsx Vvt sensor (bank 2 exhaust side) (left rear of engine) 2.5L, Engine Performance Wiring Diagram (8 of 8) for Lexus IS 250C 2011 List of elements for 2.5L, Engine Performance Wiring Diagram (8 of 8) for Lexus IS 250C 2011: 57 (left cylinder head) camshaft timing oil control valve (bank 2 exhaust) (left cylinder head) camshaft timing oil control valve (bank 2 intake) (left side of engine compt) j/c e49 (left side of engine) vsv (acis) (rear of engine) vsv (purge) (right rear of engine) vvt sensor (bank 1 exhaust side) (right side of engine compt) intake mass air flow meter Acis Alt E01 E02 E2g Ekn2 Eknk Electronically controlled transmission solenoid (on transmission) Engine control module (left front of engine compt) Engine oil pressure switch (front of engine) Eoil Ev1+ Ev1- Ex+ Ex- Igf1 Igf2 Igt1 Igt3 Igt4 Knk1 Knk2 Mol Mops Nt+ Nt- Oc2+ Oc2- Oe2+ Oe2- Oil Pnk Red Sl1+ Sl1- Sl2+ Sl2- Slt+ Slt- Slu+ Slu- Sp2+ Sp2- Star Starting/ charging system Tha Thw Transmission revolution sensor (counter gear) (rear of transmission) Transmission revolution sensor (turbine) (front of transmission) Vc2
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Lexus IS 250C 2011 List of elements for Backup Lamps Wiring Diagram for Lexus IS 250C 2011: 32 (left side of trunk) q2 2.5l 3.5l A/t A24 Ae1 Aq1 Backup lamp Backup lamp switch (right side of transmission) Bkup D18 E49 Engine room r/b 1 (right rear of engine compt) Gnd Hot at all times Hot in on or start J/c e2 & e49 (left side of engine compt) J/c j27 (left side of dash) J1 (left kick panel) J23 Left cowl side j/b (left end of dash) Left main body ecu Left rear light assembly Lh-ig fuse 10a M/t Mpx-b fuse 10a Mpxb Park/ neutral d position switch assembly (on transm- ission) Qh1 Right cowl side j/b (right end of dash) Right rear light assembly Sgnd Exterior Lamps Wiring Diagram (1 of 4) for Lexus IS 250C 2011 List of elements for Exterior Lamps Wiring Diagram (1 of 4) for Lexus IS 250C 2011: 50 (under center console) j2 A2 (left rear of engine compt) Auto B1 (right front of engine compt) B2 (left front of engine compt) Ba2 Clock assembly (w/ navigation) integration control & panel assembly (w/o navigation) Computer data lines system D12 D14 Ecu-ig rh fuse 10a Engine room j/b 2 (left side of engine compt) Engine room r/b 1 (right rear of engine compt) Except hid Fr tail fuse 10a Fr tail relay Front controller G10 G11 Hazard switch Head Headlamp dimmer switch assembly Hid Hid w/ daytime running light Hid w/o daytime running light Hot at all times Hot in on or start J/c j27 (left side of dash) J26 Left cowl side j/b (left end of dash) Left headlight assembly Light control switch Marker Mpx-b fuse 10a Mpx1 Mpx2 Off Parking Parking/ daytime running light Parking/daytime running light Red Right cowl side j/b (right end of dash) Right headlight assembly Tail Turn Turn switch Turn- haz fuse 15a W/ navigation W/o navigation Windshield wiper switch assembly Exterior Lamps Wiring Diagram (2 of 4) for Lexus IS 250C 2011 List of elements for Exterior Lamps Wiring Diagram (2 of 4) for Lexus IS 250C 2011: 45 A12 A13 A14 A15 A16 A17 A18 A20 A26 A30 Computer data lines system D18 Fr wip fuse 30a Gnd Hot in on or start J1 (left kick panel) J17 J2 (under center console) J21 Ja3 Ja4 Jq1 Left cowl side j/b (left end of dash) Left main body ecu Left outer rear view mirror assembly Lh-ig fuse 10a Lp1 Mpx1 Mpx2 Mpxb Mq1 P1 (right side of crossmember) Pnk Q1 (left "b" pillar) Q35 fls Red Right outer rear view mirror assembly Sgnd Sliding roof control ecu (center of trunk) Trnl Trnr Turn Turn signal flasher (left side of dash) Turn signal relay (center of dash) Wig Exterior Lamps Wiring Diagram (3 of 4) for Lexus IS 250C 2011 List of elements for Exterior Lamps Wiring Diagram (3 of 4) for Lexus IS 250C 2011: 56 (canada) (left side of trunk) q2 A10 A13 A24 A25 Acc Acc fuse 7.5a Altb Automatic light control sensor Backup lamp circuit Becu Center stop lamp Cltb Clte Clts Combination meter assembly Computer data lines system Dcty Ecu-ig rh fuse 10a Fr door rh fuse 20a batb Gauge fuse 7.5a Gnd2 Haz Hot at all times Hot in on or acc Hot in on or start Ig2 or dome+b Input circuit Interior light system J14 J21 J34 J35 J4 (right kick panel) J74 J75 Jk1 Lamp backup Left rear light assembly Left turn ind Micro computer Mpx1 Mpx2 Noise filter (stop lamp) (left rear wheelwell) Pcty Q2 (left side of trunk) Qh1 Red Right cowl side j/b (right end of dash) Right license plate light assembly Right main body ecu Right turn ind Tail ind Ti & te fuse 20a Trly Exterior Lamps Wiring Diagram (4 of 4) for Lexus IS 250C 2011 List of elements for Exterior Lamps Wiring Diagram (4 of 4) for Lexus IS 250C 2011: 49 (left front of engine compt) engine control module (right side of dash) j/c a33 & j80 A29 A33 Aq1 Backup lamp circuit Brake actuator assembly Brk-lp relay D12 Engine room j/b 1 (right rear of engine compt) Engine room r/b 2 (left side of engine compt) Gnd Hot at all times Hot in on or start Ind stop/tail J/c a29 & j10 (left kick panel) J/c a7 & a8 (left side of engine compt) J/c j27 (left side of dash) J1 (left kick panel) J10 J24 J80 Ja3 Lamp backup Lamp turn Left cowl side j/b (left end of dash) Left license plate light assembly Left rear combination light assembly Lh j/b- am fuse 80a Lh-ig fuse 10a Out Pnk Power source control ecu (right side of dash) Q2 (left side of trunk) Red Right cowl side j/b (right end of dash) Right rear combination light assembly Right rear light assembly Shift lock control ecu (under center console) Stop lamp control relay (left side of dash) Stop lamp switch (left side of dash) Stop sw fuse 7.5a Stop/ marker ind Stp Stp1 Stp2 Stpo Tail fuse 10a Tail relay
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 6) for Lexus IS 250C 2011 List of elements for Ground Distribution Wiring Diagram (1 of 6) for Lexus IS 250C 2011: 39 (3.5l) smog ventilation sensor A/f relay A1 (left rear of engine compt) A2 (left rear of engine compt) A3 (left rear of engine compt) Ae1 B1 (right front of engine compt) B2 (left front of engine compt) Brake actuator assembly Brake fluid level warning switch Brake pedal load sensing switch Cooling fan motor Efi 2 relay Efi main relay Engine control module Engine hood courtesy switch Engine room j/b 2 (left side of engine compt) Engine room r/b 2 (left side of engine compt) Except hid type Fan 2 relay Front controller Front wiper deicer (windshield glass) Headlamp cleaner control relay Headlight swivel ecu assembly Hid type Ig2 relay Junction connector a15 Junction connector a20 (left end of dash) Junction connector a9 (left side of engine compt) Left front fog light assembly Left headlamp assembly Level warning switch assembly Right front fog light assembly Right headlamp assembly St cut relay W/ magnet clutch compressor assembly Windshield washer motor & pump assembly Windshield wiper motor assembly Wireless door lock buzzer Ground Distribution Wiring Diagram (2 of 6) for Lexus IS 250C 2011 List of elements for Ground Distribution Wiring Diagram (2 of 6) for Lexus IS 250C 2011: 58 (a/t) transmission control switch (w/ dynamic radar cruise control) distance control ecu (w/ dynamic radar cruise control) millimeter wave radar sensor (w/ navigation) display & navigation module display 2.5l A10 Ae1 Air fuel ratio sensor (bank 1 sensor 1) shield Air fuel ratio sensor (bank 2 sensor 1) shield Aq1 Ba2 C1 (front of engine) Canister pump module Crankshaft position sensor shield Direct fuel injector assembly 1 shield Direct fuel injector assembly 2 shield Direct fuel injector assembly 3 shield Direct fuel injector assembly 4 shield Direct fuel injector assembly 5 shield Direct fuel injector assembly 6 shield Dlc 3 E1 (left rear of engine) E2 (right rear of engine) Engine control module Engine oil level sensor H1 (front of engine) Heated oxygen sensor (bank 1 sensor 2) shield Heated oxygen sensor (bank 2 sensor 2) shield I1 (front of engine) Ignition coil 1 assembly Ignition coil 2 assembly Ignition coil 3 assembly Ignition coil 4 assembly Ignition coil 5 assembly Ignition coil 6 assembly Inj relay shield J24 J3 (under center console) J60 J65 J95 Ja3 Junction connector a10 & e1 (left side of engine compt) Junction connector j70 (right side of dash) Knock control sensor (bank 1) & (bank 2) shield Nca P27 P3 (right side of trunk) Power steering motor shield Radio receiver assembly Spill control valve shield Spiral cable Stereo component amplifier assembly W/ magnet clutch compressor assembly W/ navigation W/o navigation Ze1 Ze2 Ground Distribution Wiring Diagram (3 of 6) for Lexus IS 250C 2011 List of elements for Ground Distribution Wiring Diagram (3 of 6) for Lexus IS 250C 2011: 38 A10 A31 A4 (right rear of engine compt) A5 (right rear of engine compt) Acc relay Center air bag sensor assembly Cigarette lighter assembly Combination meter assembly Cooling unit motor sub-assembly w/ fan D11 D17 Engine room r/b 1 (right rear of engine compt) Engine switch Id code box J34 J4 (right kick panel) J47 Jr2 Junction connector j71 (right side of dash) Junction connector j80 (right side of dash) K10 Left vanity light assembly Luggage door opening cancel switch assembly Luggage door opening switch assembly Main body ecu Map light assembly Nca Noise filter (ghost buster) Power source control ecu Power steering ecu assembly Power tilt motor (steering column assembly) Pwr point relay Rh-ig1 relay Right cowl side j/b (right end of dash) Right vanity light assembly Starter relay Steering lock actuator assembly To ground j2 (diagram 4 of 6) Ground Distribution Wiring Diagram (4 of 6) for Lexus IS 250C 2011 List of elements for Ground Distribution Wiring Diagram (4 of 6) for Lexus IS 250C 2011: 48 (a/t) shift lock control ecu sub- assembly A/c amplifier assembly A/t Center air bag sensor assembly Clock assembly Combination meter assembly Console box illumination light assembly D12 Dcm (telematics transceiver) Dlc 3 From right cowl side j/b (diagram 3 of 6) Front wiper deicer switch Glove box light assembly Integration control & panel assembly J1 (left kick panel) J101 J2 (under center console) J26 J34 J47 J58 Jr1 Junction connector j27 (left side of dash) Junction connector j70 (right side of dash) Left cowl side j/b (left end of dash) Left main body ecu Left roof close switch Lh-ig1 relay Lh-ig2 relay M/t Multiplex tilt & telescopic ecu Network gateway ecu Pattern select switch assembly 1 Right roof close switch Satellite switch Seat heater switch Sliding roof switch assembly Steering lock actuator assembly Steering sensor Stop light control relay Throttle position switch assembly Tire pressure warning ecu & receiver Turn signal flasher assembly Vsc off switch W/ navigation W/o navigation Windshield wiper switch assembly Yaw rate sensor Ground Distribution Wiring Diagram (5 of 6) for Lexus IS 250C 2011 List of elements for Ground Distribution Wiring Diagram (5 of 6) for Lexus IS 250C 2011: 59 (left side of trunk) luggage room r/b (w/ memory) left outer mirror control ecu assembly (w/ parking assist) clearance warning ecu assembly Back window lock assembly Center stop light assembly Defog relay Early production only Fuel lid w/ motor lock assembly Fuel pump J/c u11 (under driver's seat) Junction connector u11 (under driver's seat) Left front door electrical key oscillator Left front door lock assembly Left front position control ecu & switch assembly Left front power seat slide switch assembly Left front power seat switch Left front power window regulator switch assembly Left front seat inner belt assembly Left front seat lumbar support power seat switch Left license plate light assembly Left luggage compartment door hinge assembly Left outer rear view mirror assembly Left quarter power window regulator motor assembly Left rear combination light assembly Left rear light assembly Left roof panel strength sub assembly 2 Left seat back climate control blower Left seat cushion climate control blower Left seat heater control sub- assembly Left slide roof motor assembly Luggage compartment door lock assembly Luggage electrical key switch M1 (driver's door) M10 Mq1 Noise filter Noise filter (defogger) Outer mirror switch assembly Package tray trim hinge 1 Package tray trim hinge 2 Q1 (left "b" pillar) Q2 (left side of trunk) Q33 Q34 Q35 Q36 Q43 Qf1 Qg1 Qh1 Rear window defogger (back door glass) Right rear combination light assembly Right rear light assembly Sliding roof control assembly U1 junction connector q7 & u1 (under driver's seat) W/ climate control seat W/ memory W/o memory Om1 Ground Distribution Wiring Diagram (6 of 6) for Lexus IS 250C 2011 List of elements for Ground Distribution Wiring Diagram (6 of 6) for Lexus IS 250C 2011: 44 (if equipped) occupant detection ecu (w/ memory) right outer mirror control ecu assembly Certification ecu assembly Door control receiver Junction connector t11 (front passenger's seat) Junction connector t14 (under front passenger's seat) L1 (center of trunk) L10 Lp1 P1 (right side of crossmember) P2 (right rear of vehicle) P48 P54 P55 P59 Package tray trim bracket Power outlet socket assembly Pt1 Pt2 Pe1 Right front door electrical key oscillator Right front door lock assembly Right front lumbar power seat switch Right front power seat slide switch assembly Right front power seat switch Right front power window regulator switch assembly Right front seat inner belt assembly Right front seat position control ecu & switch assembly Right luggage compartment door hinge assembly Right outer rear view mirror assembly Right quarter power window regulator motor assembly Right roof panel strength sub assembly Right seat back climate control blower Right seat cushion climate control blower Right seat heater control sub- assembly Right side roof motor assembly Right slide roof motor assembly Roof front lock switch Seat belt control ecu Sliding roof control ecu assembly W/ climate control seat W/ memory W/o memory Nl1
HEADLIGHTS Headlamps Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Headlamps Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 79 (a/t) l10 (right kick panel) j4 +ig A10 A12 (m/t) A24 A25 Acc Acc fuse 7.5a Air conditioning system Altb Auto Automatic light control sensor Batb Beam ind Becu Bfg Cltb Clte Clts Combination meter assembly Computer data lines system D12 Dcty Dimmer switch Ecu-ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Flash Fog switch Fr door rh fuse 20a From ecu-ig rh fuse (diagram 1 of 2) Front fog ind Gauge fuse 7.5a Gnd1 Head Head ind (usa) Headlamp dimmer switch assembly High Hot at all times Hot in acc Hot in on or start Hrly Ig2 or dome +b Input circuit Interior lights system J/c j27 (left side of dash) J2 (under center console) J21 J26 J34 J4 (right kick panel) J74 J75 Jk1 Left cowl side j/b (diagram 2 0f 2) Left cowl side j/b (left end of dash) Lfg Light control switch Low Micro computer Mpx+ Mpx- Mpx- b fuse 10a Mpx1 Mpx2 Off Parking brake switch (below center console) Pcty Pkb Pnk Red Right cowl side j/b (right end of dash) Right main body ecu Tail Ti & te fuse 20a To right main body ecu (diagram 1 of 2) Tsl Tsr Windshield wiper switch assembly Headlamps Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Headlamps Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 42 (except hid) (hid) 20a A2 (left rear of engine compt) B1 (right front of engine compt) B2 (left front of engine compt) Ba2 D18 Ecu-ig lh fuse 10a Engine room j/b 1 engine room r/b 1 (right rear of engine compt) Engine room j/b 2 & engine room r/b 2 (left side of engine compt) Except hid Fr fog fuse 15a Fr fog relay Fr tail fuse 10a From j/c j27 (diagram 1 of 2) Front controller G12 G13 H-lp l lwr fuse 15a H-lp r lwr fuse 15a H-lp upr fuse 15a Head hi relay (if equipped) Head lp relay Hid High Hot at all times Hot in on or start J/c a33 (right kick panel) Left cowl side j/b (left end of dash) Left fog light assembly Left headlight assembly Light control ecu Low Low (hid) Main fuse 30a Parking/ daytime running light Right fog light assembly Right headlight assembly Solenoid (hid) W/ hid & daytime running light W/ hid & w/o daytime running light Headlamps Leveling Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Headlamps Leveling Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 53 A2 (left rear of engine compt) A30 A33 Alt Aq1 Ba3 Chg- Computer data lines system Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Front height control sensor sub assembly (left front of engine compt) H-lp lvl fuse 7.5a Head lp relay Headlamp leveling ecu (left kick panel) Headlamp leveling motor Headlamps circuit Hot at all times Hot in on or start J/c a20 (left end of dash) J/c a33 & j80 (right kick panel) J/c a9 (left side of engine compt) J80 Ja3 K10 Left cowl side j/b (left end of dash) Left headlight assembly Ll1+ Ll1- Ll2+ Ll2- Lr1+ Lr1- Lr2+ Lr2- Main body ecu Main fuse 30a Mpx1 Mpx2 Pnk Rear height control sensor sub assembly (under rear of vehicle) Red Right headlight assembly Sbf Sbr Sgf Sgr Shb Shfl Shg Shrl Spdl Spdr Wng Yq1 Headlamps Leveling Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Headlamps Leveling Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 56 (left side of dash) j/c j27 A24 Anti-lock brakes system Auto C14 Combination meter assembly Computer data lines system D12 Dimmer switch Engine room r/b 1 (right rear of engine compt) Fl+ Fl- Flash Flo Fr+ Fr- Fro Gauge fuse 7.5a Head Headlamp dimmer switch assembly High Hot at all times Hot in on or start Ig+ Input circuit J/c j27 (left side of dash) J1 (left kick panel) J21 J26 J34 J74 J75 Left cowl side j/b (left end of dash) Light control switch Low Main body ecu Micro computer Micro computer (sub) Mpx+ Mpx- Mpx- b fuse 10a Mpx1 Mpx2 Multi-information display Off Red Rh ecu-ig fuse 7.5a Right cowl side j/b (righ end of dash) Right cowl side j/b (right end of dash) Rl+ Rl- Rr+ Rr- Skid control ecu w/ actuator Tail Windshield wiper switch assembly
HORN Horn Wiring Diagram for Lexus IS 250C 2011 List of elements for Horn Wiring Diagram for Lexus IS 250C 2011: 20 (left side of engine compt) A2 (left rear of engine compt) Computer data lines system Engine room j/b 2 Front controller Horn Horn (high) (front of radiator) Horn (low) (front of radiator) Horn fuse 10a Horn relay Horn switch Hot at all times J24 Left cowl side j/b (left end of dash) Mpx1 Mpx2 Power source control ecu (right side of dash) Spiral cable sub assembly (in steering column) Steering pad switch assembly Windshield wiper switch assembly
INSTRUMENT CLUSTER Clock Wiring Diagram for Lexus IS 250C 2011 List of elements for Clock Wiring Diagram for Lexus IS 250C 2011: 41 A24 Acan Acc Acc fuse 7.5a Acc relay Accd Body ecu Clock Clock assembly Combination meter D12 D14 D27 Ecu-ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Exterior lights system Hot at all times Ig+ Ig1d Ill Ill+ Ill- Integrated control & panel assembly Interior lights system J/c j27 (left side of dash) J1 (left kick panel) J35 J4 (right kick panel) J75 Left cowl side j/b (left end of dash) Mpx-b fuse 10a P-ab Paon Pbew Pblt Pnk Power source control ecu (right side of dash) Rh-ig1 relay Right cowl side j/b (right end of dash) W/ navigation system W/o navigation system Instrument Cluster Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 84 (left rear of engine compt) a2 2.5l 3.5l A10 A29 A30 A33 Acc Acc fuse 7.5a Ae1 Ap1 Body computer Body ecu Canh Canl Computer data lines system Data link connector 3 (left side of dash) Dcm (telematics transceiver) (right side of dash) Dcty Disp Display & navigation module display Display & navigation module display (w/ navigation) E1 (left rear of engine) Ecu-ig rh fuse 10a Engine control module (left front of engine compt) Engine oil level sensor (bottom of engine) Engine oil pressure switch (front of engine) Engine room j/b 2 (left side of engine compt) Front controller Fuel sender (sub) (in fuel tank) Fuel sender gauge assembly Gnd Gnd1 Hot in on or acc Hot in on or start J/c a10 & e1 (left side of engine compt) J/c a9 (left side of engine compt) J/c j10 & a29 (left kick panel) J/c j71 (right side of dash) J/c j80 & a33 (right kick panel) a33 J10 J101 J21 J24 J3 (under center console) J50 J75 J80 J95 J96 Jp2 Jq1 Left cowl side j/b (left end of dash) Left front door courtesy switch Lgcy Lh ecu-ig fuse 10a Luggage compartment door lock assembly Mol Mops Mpx1 Mpx2 P29 P30 Pcty Pnk Power source control ecu (right side of dash) Q2 (left side of trunk) Qp2 Radio receiver assembly Red Right cowl side j/b (right end of dash) Right front door courtesy switch Right steering pad switch Spd Spdp Spiral cable sub- assembly Steering pad switch assembly Stereo component amplifier (right side of trunk) Swg Tac Tach W/ navigation system W/o navigation system Water level warning switch
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 59 (if equipped) A12 A19 Acc Acc fuse 7.5a Acty Altb Batb Bdcy Body ecu D17 Dcty Dcyl Diode (luggage room light) (left side of trunk) Ecu-ig rh fuse 10a Foot lamp Fr door rh fuse 20a Gnd1 Gnd2 Hot at all times Hot in on or acc Hot in or or start Ile1 J/c j71 (right side of dash) J/c l11 (front passenger's door) J/c m14 (driver's door) J2 (under center console) J4 (right kick panel) J75 Jp2 Jq1 Jr2 Left cowl side j/b (left end of dash) Left door door scuff plate assembly Left front door courtesy light assembly Left front door courtesy light switch assembly Left outer rear view mirror assembly foot lamp Lgcy Lp1 Luggage compartment door lock assembly Mq1 Noise filter (luggage room light) (left rear wheelwell) Parking brake switch (m/t) (below center console) Pcty Pcyl Pkb Q2 (left side of trunk) Qp2 Red Right cowl side j/b (right end of dash) Right door scuff plate assembly (if equipped) Right front door courtesy light assembly Right front door courtesy light switch assembly Right main body ecu Right outer rear view mirror assembly Right rear room light assembly Sftp Ti & te fuse 20a W/ outer scuff light Courtesy Lamps Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 48 A10 A25 A29 Ap1 Aq1 Combination meter assembly Computer data lines system Cspt D11 Dome fuse 10a Door Door ind Engine room r/b 1 (right rear of engine compt) Fspt Gauge fuse 7.5a Hot at all times Hot in on or start Ig2 dome+b Input circuit J/c a29 & j10 (left kick panel) J/c j71 (right side of dash) J/c j80 (right side of dash) J10 J4 (right kick panel) J75 Jq1 Jr2 Left dome light Left front map light switch Left interior illumination light assembly 1 Left vanity light assembly Map light Map light assembly Micro computer Micro computer (sub) Mq1 Multi information display Nca On/off Pnk Red Right cowl side j/b (right end of dash) Right dome light Right front map light switch Right interior illumination light assembly 1 Right main body ecu Right vanity light assembly Shift illumination Instrument Illumination Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 70 (left side of dash) j/c j27 A24 Acc Acc fuse 7.5a Altb Auto Becu Cigarette lighter assembly Clock assembly Computer data lines system Console box ill- umination light assembly D12 D17 D20 D27 Ecu-ig rh fuse 10a Ecu-ig rm fuse 10a Engine room j/b 1 (right rear of engine compt) Engine room r/b 1 (right rear of engine compt) Front center register interior illumination light assembly 2 Glove box light assembly Gnd Gnd1 Gnd2 Head Headlight dimmer switch assembly Hot at all times Hot in on or acc Hot in on or start Ill+ Ill- Integration control & panel assembly J/c j27 (left side of dash) J2 (under center console) J26 J3 (under center console) J4 (right kick panel) J65 J95 J96 Jk1 Jq1 Left cowl side j/b (left end of dash) Lh j/b-am fuse 80a Light control switch Luggage door opening switch assembly M18 M19 Main body ecu Mpx-b fuse 10a Mpx1 Mpx2 Mq2 Off Outer mirror switch assembly Panel fuse 7.5a Radio receiver assembly Right cowl side j/b (right end of dash) Right interior illumination light assembly Satellite set switch Swg Tail Tail relay Ti & te fuse 20a Trly W/ memory W/ navigation W/o memory W/o navigation Windshield wiper switch assembly Instrument Illumination Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 55 A/t A10 A25 Am1 Am2 Am2 fuse 7.5a Combination meter Computer data lines system D11 Dcm (telematics transceiver) (right side of dash) Display & navigation module display (w/ navigation) Engine switch (center of dash) Front wiper deicer switch Gauge fuse 7.5a Gnd1 Headlamp cleaner switch assembly Hot at all times Hot in on or start Ig+ Ill+ Ill- J/c j70 (right side of dash) J/c j71 (right side of dash) J/c j80 (right side of dash) J101 J24 J3 (under center console) J34 J35 J4 (right kick panel) J50 Left interior illumination light assembly 2 Left steering pad sw Light control rheostat M/t Mpx+ Mpx- Pattern select switch assembly Pnk Power source control ecu (right side of dash) Right cowl side j/b (right end of dash) Right steering pad sw Seat heater switch Shift position indicator (a/t) Sliding roof switch assembly (left side of dash) Spiral cable (under steering wheel) Steering pad switch assembly Sw+b Swg Swil Swsv Throttle position switch assembly Vsc off switch (center of dash) W/ navigation W/o navigation
MEMORY SYSTEMS Driver"s Memory Seat Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Driver"s Memory Seat Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 57 A24 Back Computer data lines system D14 D18 Down Drdc Ecu-ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Fr p/ seat lh fuse 30a Frv+ Frv- Fwd Gnd Hlg Hls Hlv Hot at all times Hot w/ rh-ig1 relay energized J/c j27 (left side of dash) J/c q7 & u1 (under driver's seat) J/c u11 (under driver's seat) J18 J22 Jq1 Left cowl side j/b (left end of dash) Left front lumbar power seat switch Left front lumbar support motor (in driver's seat) Left front position control ecu & switch assembly (under driver's seat) Left front power seat lifter position motor & sensor (left front seat adjuster assembly) Left front power seat reclining position motor assembly (in driver's seat) Left front power seat slide position motor & sensor (left front seat adjuster assembly) Left front power seat slide switch assembly Left front power seat vertical position motor & seat (left front seat adjuster assembly) Left reclining position sensor (driver's seat) Lft+ Lft- Mpx-b fuse 10a Mpx1 Ods Pvcc Q1 (left "b" pillar) Rcl+ Rcl- Red Right cowl side j/b (right end of dash) Seng Sgnd Sld+ Sld- Sldf Sldr Ssfv Ssrl Ssrr Ssrs Sysb Driver"s Memory Seat Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Driver"s Memory Seat Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 46 A12 A20 Altb Bdr Body computer Buckle switch Certification ecu (right side of trunk) Computer data lines system D17 Data Dcty Door control receiver (center of trunk) Fr door lh fuse 20a Gnd Gnd1 Hot at all times J/c q7 & u1 (under driver's seat) J/c u11 (under driver's seat) J21 J4 (right kick panel) J75 Jp2 Jq1 Left cowl side j/b (left end of dash) Left front door courtesy light switch assembly Left front seat inner belt assembly Left front seat memory switch Left outer mirror control ecu assembly (left front door) M10 Mpx1 Mpx2 Mq1 Mswe Occupant detection sensor P2 (right rear of vehicle) Parking brake switch assembly (m/t) (below center console) Pkb Pnk Q1 (left "b" pillar) Rco Rda Red Right cowl side j/b (right end of dash) Rssi Set Ti & te fuse 20a Memory Mirrors Wiring Diagram for Lexus IS 250C 2011 List of elements for Memory Mirrors Wiring Diagram for Lexus IS 250C 2011: 89 A12 A20 Adjust switch Bdr Becu Certification ecu (right side of trunk) Computer data lines system D17 Data Dcty De2 Dm+r Dmhr Dmvr Door control receiver (center of trunk) Down Dvc Engine room r/b 1 (right rear of engine compt) Fold Fold away switch (w/ retractor) Fr door lh fuse 20a Fr door rh fuse 20a Gnd Gnd1 Hot at all times Hssr Ill+ Ill- Interior lights system J21 J4 (right kick panel) J74 J75 Jp2 Jq1 L10 Left Left cowl side j/b (left end of dash) Left front door courtesy light switch assembly Left front seat memory switch Left outer mirror control ecu assembly (left front door) Left outer rear view mirror assembly Left/ up Left/right Lp1 M10 Main body ecu Mirb Mire Mirror position sensor Mirs Mpx-b fuse 10a Mpx1 Mpx2 Mq1 Mr+ Mr- Msw Mswe Outer mirror switch assembly P1 (right side of crossmember) P2 (right rear of vehicle) Parking brake switch assembly (m/t) (below center console) Pe2 Pkb Pm+r Pmhr Pmvr Pnk Pvc Q1 (left "b" pillar) Rco Rda Red Ret Retractor Right Right cowl side j/b (right end of dash) Right outer mirror control ecu assembly (right front door) Right outer rear view mirror Right/ dn Rssi Sel1 Sele Select switch Set Unfold Up/down Vssr Memory Power Tilt & Power Telescopic Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 69 (left front door) left outer mirror control ecu assembly A12 A15 A18 A20 A24 Altb Bdr Body ecu Certification ecu assembly (right side of trunk) Computer data lines system Cpub D12 D14 D17 Data Dcty Door control receiver (center of trunk) Ecu-ig rh fuse 10a Ecub Engine room j/b 1 (right rear of engine compt) Engine room r/b 1 (right rear of engine compt) Gnd Gnd1 Hot at all times Ig1d J2 (under center console) J21 J4 (right kick panel) J75 Jp2 Jq1 Left front door courtesy light switch assembly Left front seat memory switch M10 Mpx-b fuse 10a Mpx1 Mpx2 Mswe Multiplex tilt & telescopic ecu (on steering column) P2 (right rear of vehicle) Parking brake switch assembly (m/t) (below center console) Pkb Pnk Power source control ecu (right side of dash) Power tilt motor (steering column assembly) (at steering column) Q1 (left "b" pillar) Rco Rda Red Rh j/b-am fuse 80a Rh-ig1 relay Right cowl side j/b (right end of dash) Rssi Sel1 Sele Set Sig Telescopic motor Telescopic sensor Tem+ Tem- Tes Ti & te fuse 20a Tim+ Tim- Tis Vce Vci Memory Power Tilt & Power Telescopic Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 44 (left end of dash) left cowl side j/b (left side of dash) j/c j27 Ae1 Brake actuator assembly Ca1h Ca1l Canh Canl Computer data lines system D12 D13 D18 Down Engine control module (left front of engine compt) Engine room j/b 1 (right rear of engine compt) Fr door lh fuse 20a Headlight dimmer switch assembly Hot at all times J/c j27 (left side of dash) J/c m14 (driver's door) J1 (left kick panel) J2 (under center console) J26 J29 Jq1 Left cowl side j/b (left end of dash) Lh j/b-am fuse 80a Lh-ig fuse 10a Lh-ig1 relay Long Mpd1 Mpd2 Mpx1 Mpx2 Mq1 Mq2 Msw Network gateway ecu (right side of dash) Park/ neutral position switch assembly (a/t) (on transmission) Pnk Red Short Tilt & telescopic switch Windshield wiper switch assembly Passenger"s Memory Seat Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Passenger"s Memory Seat Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 52 Back Computer data lines system Down Ecu-ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Fr p/ seat rh fuse 30a Frv+ Frv- Fwd Gnd Hlg Hls Hlv Hot at all times Hot w/ rh-ig1 relay energized J/c t11 (front passenger's seat) J15 J20 J29 Lft+ Lft- Mpx-b fuse 10a Mpx1 Ods P1 (right side of crossmember) Prdc Pt1 Pvcc Rcl+ Rcl- Red Right cowl side j/b (right end of dash) Right front lumbar power seat switch Right front lumbar support motor (front passenger's seat) Right front position control ecu & switch (under front passenger's seat) Right front power seat lifter position motor & sensor (right front seat adjuster assembly) Right front power seat reclining position motor assembly (front passenger's seat) Right front power seat slide position motor & sensor (right front seat adjuster assembly) Right front power seat slide switch assembly Right front power seat vertical position motor & seat (right front seat adjuster assembly) Right reclining position sensor (passenger's seat) Seng Sgnd Sld+ Sld- Sldf Sldr Ssfv Ssrl Ssrr Ssrs Sysb Passenger"s Memory Seat Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Passenger"s Memory Seat Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 36 A12 Altb Bdr Body computer Buckle switch Computer data lines system D17 Fr door rh fuse 20a Gnd Gnd1 Hot at all times J/c t14 (under front passenger's seat) J21 J4 (right kick panel) J75 Jp2 L10 Lp1 Mpx1 Mpx2 Mswe Occupant detection sensor P1 (right side of crossmember) Parking brake switch assembly (m/t) (below center console) Pcty Pkb Pnk Pt1 Red Right cowl side j/b (right end of dash) Right front door courtesy light switch assembly Right front seat inner belt (under front passenger's seat) Right front seat memory switch Right outer mirror control ecu assembly (right front door) Set Ti & te fuse 20a
NAVIGATION Navigation Wiring Diagram (1 of 5) for Lexus IS 250C 2011 List of elements for Navigation Wiring Diagram (1 of 5) for Lexus IS 250C 2011: 88 (or red) (under steering wheel) spiral cable +b1 A/t A12 Acc Acc fuse 7.5a Agnd Alo Aro Asgn Auxo Back Canh Canl Combination meter Computer data lines system D14 D27 D28 Disp Display & navigation module display Ecu-ig rh fuse 10a Gnd1 Gps antenna Hot at all times Hot in on or acc Hot in on or start Ill+ Ill- Input circuit Instrument cluster system Interior lights system J/c j27 (left side of dash) J24 J3 (under center console) J34 J50 J51 Jq1 Jq3 L10 Left cowl side j/b (left end of dash) Left steering pad switch M/t Macc Main body ecu Mi+ Mi- Micro computer Min+ Min- Mo+ Mo- Mode Mssl Nca Off hook On hook Parking brake switch (below center console) Pkb Pnk Qm1 Red Rev Right cowl side j/b (right end of dash) Right steering pad switch Seek+ Seek- Sgnd Sldi Sldo Sns2 Spd Steering pad switch assembly Stereo jack adapter assembly 1 Sw1 Sw2 Swg Tv 1 fuse 10a Udo+ Udo- Ujsg Upi Voice Vol+ Vol- Wuo Navigation Wiring Diagram (2 of 5) for Lexus IS 250C 2011 List of elements for Navigation Wiring Diagram (2 of 5) for Lexus IS 250C 2011: 51 (or red) Acc Agnd Ali Amplifier microphone assembly Antenna Ari Asgn Auxi D22 Gnd Hot at all times Ill+ Ill- Interior lights system J110 J3 (under center console) J99 Jp1 Jr1 Map light assembly Mi+ Mi- Mo+ Mo- Multimedia interface ecu (if equipped) (lower right side of dash) Nca Ntsc Rad 3 fuse 10a Radio receiver assembly Red Right cowl side j/b (right end of dash) Sdars antenna Sld Sldi Txi+ Txi- Udi+ Udi- Uesg Ugd1 Ulo+ Upo Uro+ Usd1 W/ lexus enform W/ sdars W/o lexus enform Wui Wuo Mj1 Navigation Wiring Diagram (3 of 5) for Lexus IS 250C 2011 List of elements for Navigation Wiring Diagram (3 of 5) for Lexus IS 250C 2011: 45 (right side of trunk) p3 +b2 12 speakers 8 speakers Ap1 Ctr+ Ctr- Engine room r/b 1 (right rear of engine compt) Fl- Fr+ Fr+ fl+ Fr- Gnd Gnd2 Hot at all times Instrument cluster system Mi+ Mi- Mo+ Mo- Nca P27 P28 P29 P51 Pnk Rad 1 fuse 30a Rad 2 fuse 30a Red Rl+ Rl- Rr+ Rr- Sldi Sldo Spd Stereo component amplifier (right side of trunk) Tmut Wf1+ fl+ Wf2+ Wfl+ Wfl- Wfr+ Wfr- Wui Navigation Wiring Diagram (4 of 5) for Lexus IS 250C 2011 List of elements for Navigation Wiring Diagram (4 of 5) for Lexus IS 250C 2011: 22 +tw -tw 12 speakers 8 speakers Front speaker assembly 4 (12 speakers) Jk1 Jp2 Left front speaker assembly 2 & 3 (front speaker assembly 3) Left rear speaker 2 assembly Left rear speaker assembly Lp2 Mq2 Nca Pnk Qp1 Red Right front speaker assembly 2 & 3 Right rear speaker 2 assembly Right rear speaker assembly Stereo component speaker assembly W/ lexus enform W/o lexus enform Navigation Wiring Diagram (5 of 5) for Lexus IS 250C 2011 List of elements for Navigation Wiring Diagram (5 of 5) for Lexus IS 250C 2011: 63 +b2 Acc Acc1 Agnd Ca+ Cb+ Cgnd Computer data lines system Cv+ Cv- Dcm (telematics transceiver) (w/ lexus enform) j107 (right side of dash) Display & navigation module display Gnd Gnd1 Ieee Ieee connector (hdd navigation system) J101 J104 J106 J52 J62 J63 Jp2 Jq3 Left front speaker assembly 1 Lp2 Mci+ Mci- Mco+ Mco- Mcvd Mq2 Multimedia module navigation assembly (w/ dvd navigation system) Mute Nca Pnk Qp1 Qh1 Rear television camera assembly Red Right front speaker assembly 1 Sgnd Spi+ Spi- Spo+ Spo- Tx2+ Tx2- Txm+ Txm- Usb Usbg Usbv Va- Val+ Var+ Vor+ Vor- Vot+ Vot- Vv+ Vv- Z10 Rear Sonar Wiring Diagram for Lexus IS 250C 2011 List of elements for Rear Sonar Wiring Diagram for Lexus IS 250C 2011: 89 (left end of dash) left cowl side j/b (under center console) j2 2.5l 3.5l A/t A10 A12 A30 Ad1 Ae1 Aq1 Backup lamp switch assembly (right side of trans- mission) Bkup Brake actuator assembly Ca1h Ca1l Canh Canl Cbz Clearance sonar ind Clearance warning buzzer (center of dash) Clearance warning ecu (left side of trunk) Combination meter assembly Computer data lines system Computer micro D12 D13 E49 Ecu- ig rh fuse 10a Engine control module (left front of engine compt) Engine controls system Gnd Gtx+ Gtx- Hot at all times Ig1d Ig2 or dome +b Input circuit J/c e2 & e49 (left side of engine compt) J/c j27 (left side of dash) J/c j70 (right side of dash) J1 (left kick panel) J12 J21 J23 J34 J4 (right kick panel) J75 Ja3 Jq1 L10 Left cowl side j/b (left end of dash) Left front ultrasonic sensor 1 (left front of vehicle) Left main body ecu Left rear ultrasonic sensor 1 (rear bumper) Left ultrasonic sensor 2 (rear bumper) Lh-ig 1 relay Lh-ig fuse 10a M/t Micro computer (sub) Mpd1 Mpd2 Mpi1 Mpi2 Mpx+ Mpx- Mpx1 Mpx2 Multi information display Navigation circuit Ne+ Ne- Network gateway ecu (right end of dash) Park/ neutral position switch assembly (on trans- mission) Parking brake switch (below center console) Pkb Pnk Power source control ecu (right side of dash) Q1 (left "b" pillar) Red Rh-ig 1 relay Rh-ig fuse 7.5a Right cowl side j/b (right end of dash) Right front ultrasonic sensor 1 (right front of vehicle) Right main body ecu Right rear ultrasonic sensor 1 (rear bumper) Right ultrasonic sensor 2 (rear bumper) Sp1 Sq1 Rear View Monitoring Wiring Diagram for Lexus IS 250C 2011 List of elements for Rear View Monitoring Wiring Diagram for Lexus IS 250C 2011: 91 2.5l 3.5l A/t A10 A12 A30 A33 Ae1 Ap1 Aq1 Assembly (on transmission) Back Backup lamp switch assembly (right side of trans- mission) Bkup Brake actuator assembly Ca+ Ca1h Ca1l Canh Canl Cb+ Cgnd Circuit input Combination meter assembly Computer data lines system Computer micro Cv+ Cv- D12 D13 Display & navigation module display Display multi information E49 Engine control module (left front of engine compt) Engine controls system Gnd Gtx+ Gtx- Hot at all times Ig1d J/c a33 & j80 (right kick panel) J/c e2 & e49 (left side of engine compt) J/c j27 (left side of dash) J/c j71 (right side of dash) J1 (left kick panel) J2 (under center console) J21 J23 J34 J50 J52 J75 J80 Ja3 Jq1 Jq3 L10 Left cowl side j/b (left end of dash) Left main body ecu Lh-ig 1 relay Lh-ig fuse 10a M/t Micro computer (sub) Mpd1 Mpd2 Mpi1 Mpi2 Mpx+ Mpx- Mpx1 Mpx2 Navigation circuit Nca Ne+ Ne- Network gateway ecu (right side of dash) P29 Park/ neutral position switch p Parking brake switch (below center console) Pkb Pnk Power source control ecu (right side of dash) Qh2 Rear television camera Red Rev Right cowl side j/b (right end of dash) Right main body ecu Sp1 Spd Stereo component amplifier (right side of trunk) Telematics Wiring Diagram for Lexus IS 250C 2011 List of elements for Telematics Wiring Diagram for Lexus IS 250C 2011: 86 (left end of dash) left cowl side j/b (under center console) center air bag sensor assembly (w/ lexus enform) 12 speakers 8 speakers A10 Acc Acc fuse 7.5a Amplifier microphone assembly Computer data lines system D12 D27 Dcm (telematics transceiver) (right side of dash) Display & navigation module display Engine room r/b 2 (left side of engine compt) Fr+ Fr- Gps antenna Gsw Gsw3 Hot at all times Hot in on or acc Hot in on or start Ig2 Ign fuse 10a Ill+ Ind1 Ind2 Instrument cluster system Interior lights system J/c j27 (left side of dash) J1 (left kick panel) J101 J106 J107 J47 J50 J97 Ja4 Jp2 Jr1 Lp2 Map light assembly Mci+ Mci- Mco+ Mco- Mcvd Mic+ Mic- Min+ Min- Mute Nca P28 P29 Pnk Radio receiver assembly Red Right cowl side j/b (right end of dash) Right front speaker assembly 2 & 3 (front speaker assembly 3) Sgnd Sig- Sig1 Sil Sled Sns2 Sos switch Spdp Spi+ Spi- Spo+ Spo- Stereo component amplifier (right side of trunk) p30 Tel fuse 10a Telephone antenna Tmut Usb Usbg Usbv Vor+ Vor- Vot+ Vot- W/ navigation W/o navigation
PASSIVE RESTRAINTS Passive Restraints Wiring Diagram for Lexus IS 250C 2011 List of elements for Passive Restraints Wiring Diagram for Lexus IS 250C 2011: 23 (left "b" pillar) q1 Buckle switch Diode (left tension reducer) (under driver's seat) Diode (right tension reducer) (front passenger's seat) Hot in on or start J/c q7 & u1 (under driver's q7 seat) J/c q7 & u1 (under driver's seat) J/c t14 (under front passenger's seat) J/c u11 (under driver's seat) J11 J13 Left cowl side j/b (left end of dash) Left front seat inner belt assembly Left front tension reducer (left front seat outer belt assembly) Lh-ig fuse 10a Memory systems Pt1 Rh-ig fuse 7.5a Right cowl side j/b (right end of dash) Right front seat inner belt assembly (under front passenger's seat) Right front tension reducer (right front seat outer belt assembly) W/ memory W/o memory
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 5) for Lexus IS 250C 2011 List of elements for Power Distribution Wiring Diagram (1 of 5) for Lexus IS 250C 2011: 51 (except hid type) (hid type) A/c comp fuse 7.5a A/f fuse 15a Abs 2 fuse 30a Air conditioning system Alt fuse 150a Alt-s fuse 7.5a Anti-lock brakes system Battery Cooling fans system Cruise control, engine controls & transmissions systems Defogger system Deicer fuse 25a E/g-am fuse 60a E/g-b fuse 60a Electronic power steering system Engine controls system Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Engine room j/b 2 & engine room r/b 2 (left side of engine compt) Eps fuse 80a Etcs fuse 10a Exterior lights system Fan 1 fuse 40a Fr ctrl-am fuse 30a Fr ctrl-b fuse 25a Fr fog fuse 15a Fr fog relay Fr tail fuse 10a Fr tail relay Front controller H-lp cln fuse 30a H-lp upr fuse 15a 20a Head hi relay (if equipped) Horn fuse 10a Horn relay Pnk Rad 1 fuse 30a Rad 2 fuse 30a Red Shift interlock system Sound & navigation systems Starter fuse 30a Starting/ charging system Str lock fuse 25a Tel fuse 10a To abs 1 fuse (diagram 2 of 5) To fan 2 fuse (diagram 2 of 5) Turn- haz fuse 15a Wash relay Washer fuse 20a Wiper/ washer system Power Distribution Wiring Diagram (2 of 5) for Lexus IS 250C 2011 List of elements for Power Distribution Wiring Diagram (2 of 5) for Lexus IS 250C 2011: 46 Abs 1 fuse 50a Air conditioning system Anti-lock brakes system Aq2 Cds fuse 10a Cooling fans system D/c cut fuse 20a Defog fuse 30a Defogger system Dome fuse 10a Engine controls, interior lights, instrument cluster & mirrors systems Engine controls, starting/charging, anti-lock brakes, cruise control, instrument cluster, wiper/washer, headlights, exterior lights, warning, interior lights, electronic power steering, power tops, memory & transmissions systems Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Fan 2 fuse 40a From fan 1 fuse (diagram 1 of 5) From rad 2 fuse (diagram 1 of 5) Glw plg 1 fuse 50a Glw plg 2 fuse 50a Head lp relay Heater fuse 50a J4 (right kick panel) K10 Lh j/b-am fuse 80a Lh lgg fuse 30a Lh lgg lck fuse 30a Lh roof fuse 30a Luggage room r/b & luggage room j/b (left side of trunk) Main fuse 30a Mpx-b fuse 10a Noise filter (ghost buster) (right front of engine) P-tray main fuse 30a P-tray side fuse 7.5a Pnk Power tops system Psb fuse 30a Qk1 Red Rh j/b-am fuse 80a Rh lgg fuse 30a Rh lgg lck fuse 30a Rh roof fuse 30a Right cowl side j/b (right end of dash) Rr r/b-am fuse 80a To a/c fuse (diagram 4 of 5) To ig 2 main fuse (diagram 3 of 5) To stop sw (diagram 4 of 5) Power Distribution Wiring Diagram (3 of 5) for Lexus IS 250C 2011 List of elements for Power Distribution Wiring Diagram (3 of 5) for Lexus IS 250C 2011: 55 (right end of dash) right cowl side j/b A2 (left rear of engine compt) A23 A25 A27 A29 Accd Am1 Am2 Am2 fuse 7.5a Batb Cruise control, engine controls, transmissions, anti-lock brakes & exterior lights systems D11 Door locks & shift interlock systems Efi 2 relay Efi fuse 25a Efi main relay Engine controls system Engine controls, cruise control & transmissions systems Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Engine room j/b 2 & engine room r/b 2 (left side of engine compt) Engine switch F/pmp fuse 25a Fr door rh fuse 20a From d/c cut fuse (diagram 2 of 5) Gauge fuse 7.5a Ig 2 fuse 10a Ig 2 main fuse 20a Ig 2 relay Ig1d Ig2d Ign fuse 10a Inj fuse 20a Inj relay J/c a9 (left side of engine compt) J10 J26 J4 (right kick panel) Junction connector a29 & j10 (left kick panel) Junction connector j71 (right side of dash) Junction connector j80 (right side of dash) Lh j/b-b fuse 30a Memory & power windows systems P/i-b fuse 60a Pnk Power source control ecu (right side of dash) Red Rh j/b-b fuse 30a Right main body ecu Sound systems Ssw1 Ssw2 To fr door lh fuse (diagram 5 of 5) To pwr point relay (diagram 5 of 5) To rh-ig1 relay (diagram 5 of 5) Power Distribution Wiring Diagram (4 of 5) for Lexus IS 250C 2011 List of elements for Power Distribution Wiring Diagram (4 of 5) for Lexus IS 250C 2011: 77 (left end of dash) left cowl side j/b A/c fuse 7.5a A11 A14 A15 A27 A28 Air conditioning & defogger systems Air conditioning system Altb Anti-lock brakes, cruise control, wiper/washer, exterior lights, air conditioning, starting/charging & cooling fans systems Anti-lock brakes, sound, navigation, exterior lights, cruise control, transmissions, memory, door locks & interior lights systems Computer data lines system D13 D20 D22 D28 D29 Defogger system Ecu- ig lh fuse 10a Electronic power steering & memory systems Electronic power steering system Exterior lights system Exterior lights, anti-lock brakes, cruise control, transmissions, engine controls, shift interlock & door locks systems Fr p/ seat lh fuse 30a Fr p/ seat rh fuse 30a Fr s/ htr lh fuse 15a Fr wip fuse 30a From lh j/b-am fuse (diagram 2 of 5) From rh j/b-am fuse (diagram 2 of 5) Fuel opn fuse 10a H-lp lvl fuse 7.5a Headlights system Instrument cluster system Interior lights system J1 (left kick panel) J10 J11 J12 J22 J24 J28 J29 J30 K10 Left main body ecu Lh-ig 1 relay Lh-ig 2 relay Lh-ig fuse 10a Main body ecu Memory, seats & electronic power steering systems Mir htr fuse 15a Navigation & sound systems Navigation system Obd fuse 7.5a Panel fuse 7.5a Passive restraints system Pnk Rad 3 fuse 10a Red Right cowl side j/b (right end of dash) Right main body ecu Seats & memory systems Seats system Seats, air conditioning, cruise control, anti-lock brakes, mirrors, defogger, shift interlock, wiper/washer & warning systems Sound & navigation systems Stop sw fuse 7.5a Tail fuse 10a Tail relay Ti & te fuse 20a To pwr point relay (diagram 5 of 5) To right cowl side j/b (diagram 5 of 5) Trly Trunk, tailgate, fuel doors system Tv 1 fuse 10a Wig Wiper/ washer system Power Distribution Wiring Diagram (5 of 5) for Lexus IS 250C 2011 List of elements for Power Distribution Wiring Diagram (5 of 5) for Lexus IS 250C 2011: 46 (left end of dash) Acc fuse 7.5a Acc relay Anti-theft system Cig fuse 15a Cigarette lighter assembly D12 D13 D14 D26 D27 Door locks systems Door locks, memory, power windows & anti-theft systems Ecu- ig rh fuse 10a Fr door lh fuse 20a Fr s/ htr rh fuse 15a From left cowl side j/b (diagram 4 of 5) From lh From obd n fuse (diagram 4 of 5) From power source control ecu (diagram 3 of 5) Interior lights system J/b-b fuse (diagram 3 of 5) J13 J15 J16 J23 J24 J4 (right kick panel) Left cowl side j/b Memory & electronic power steering systems Navigation & sound systems Navigation, sound, mirrors, instrument cluster, computer data lines & interior lights systems P1 (right side of crossmember) Passive restraint system Pnk Power outlet socket assembly Pwr outlet fuse 15a Pwr point relay Rh-ig 1 relay Rh-ig fuse 7.5a Right cowl side j/b (right end of dash) Right main body ecu Right main body ecu acc Seats system Seats, defogger, cruise control, transmissions & navigation systems Security fuse 7.5a
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 5) for Lexus IS 250C 2011 List of elements for Power Door Locks Wiring Diagram (1 of 5) for Lexus IS 250C 2011: 74 2.5l a/t hid type w/ headlight cleaner A24 A36 Acc Acc fuse 7.5a Act+ Act- Actd Altb Batb Becu Bzr Computer data lines system D10 Dcty Diode (luggage compt lamp) (left side of trunk) Display & navigation module display Ecu-ig rh fuse 10a Except 2.5l a/t hid type w/ headlight cleaner Fr door rh fuse 20a Gnd Gnd1 Gnd2 Haz Headlights system Hot at all times Hot in on or acc Hot in on or start Hrly Ind Integration control & panel assembly J/c a15 (left rear corner of engine compt) J/c j27 (left side of dash) J17 J18 J2 (under center console) J21 J24 J3 (under center console) J50 J61 J74 J75 Jp2 Jq1 Key lock Key unlock Kul L1 (center of trunk) Left front door courtesy light switch assembly Left front door lock assembly (driver's door) Lgcy Lp1 Lsw Lswp Mpx1 Mpx2 Mq1 Pcty Power window regulator master switch assembly Q1 (left "b" pillar) Right cowl side j/b (right end of dash) Right front door courtesy light switch assembly Right front door lock assembly (front passenger's door) Right main body ecu Security horn assembly (right rear of engine compt) Security indicator light Seuc Ti & te fuse 20a Tr+ Unlock detection W/ navigation W/o navigation Wireless door lock buzzer (inside left front wheelwell) Power Door Locks Wiring Diagram (2 of 5) for Lexus IS 250C 2011 List of elements for Power Door Locks Wiring Diagram (2 of 5) for Lexus IS 250C 2011: 41 (w/o memory) A12 A30 Acty Bdcy Computer data lines system D11 D12 D18 Door Fr door lh fuse 20a Gnd Haz Hot at all times Hot in on or start J/c j71 (right side of dash) J/c j80 (right side of dash) J/c m14 (driver's door) J1 (left kick panel) J2 (under center console) J29 Jq1 Jr2 Left cowl side j/b (left end of dash) Left main body ecu Lh-ig fuse 10a Light left dome Light right dome Lpsw Luggage compartment door lock assembly Luggage electrical key switch (center rear of trunk) Map light assembly Mpx1 Mpx2 Mpxb Mq1 Mq2 Q2 (left side of trunk) Qh1 Right cowl side j/b (right end of dash) Turn signal flasher assembly (left side of dash) Power Door Locks Wiring Diagram (3 of 5) for Lexus IS 250C 2011 List of elements for Power Door Locks Wiring Diagram (3 of 5) for Lexus IS 250C 2011: 35 (right rear of vehicle) p2 (w/o memory) A2 (left rear of engine compt) A29 Ap1 Aq1 B1 (right front of engine compt) Computer data lines system Data Dome fuse 10a Door control receiver (center of trunk) Engine hood courtesy switch (center front of engine compt) Engine room j/b 2 (left side of engine compt) Engine room r/b 1 (right rear of engine compt) Foot light Front controller Gnd Horn (high) (front of radiator) Horn (low) (front of radiator) Horn fuse 10a Horn relay Hot at all times J/c a29 & j10 (left kick panel) a29 J/c l11 (front passenger's door) l11 J/c m14 (driver's door) J10 L11 Left outer rear view mirror Lp1 Mpx-b fuse 10a Mq1 Qp2 Red Right outer rear view mirror Rssi Power Door Locks Wiring Diagram (4 of 5) for Lexus IS 250C 2011 List of elements for Power Door Locks Wiring Diagram (4 of 5) for Lexus IS 250C 2011: 66 (front passenger's door) j/c l11 (left rear seat) rear indoor electrical key oscillator (right side of crossmember) (right side of luggage compt) outside luggage electrical key antenna (right side of trunk) certification ecu (under center console) console electrical key oscillator (w/o memory) +b1 Acc Agnd Ant1 Ant2 Antenna coil Cg1b Cg2b Cg5b Cg6b Cg7b Cg8b Clg Clg1 Clg2 Clg5 Clg6 Clg7 Clg8 Clgb Code Computer data lines system Engine switch (center of dash) Gnd Indoor luggage compartment electrical key oscillator (left side of trunk) Jp2 Left front door electrical key oscillator (in left front door) Left front door handle electrical key antenna (in left front door) Lin Lp2 Mpx1 Mpx2 Mq2 P1 (right side of crossmember) Pnk Q1 (left "b" pillar) Qp1 Qp2 Rc0 Rda Red Right front door electrical key oscillator (in right front door) Right front door handle electrical key antenna (in right front door) Rssi Sel Sel1 Sel2 Sen1 Sen2 Sens Sgt Trg+ Trg- Tsw1 Tsw2 Txct Vc5 Nli Omi Power Door Locks Wiring Diagram (5 of 5) for Lexus IS 250C 2011 List of elements for Power Door Locks Wiring Diagram (5 of 5) for Lexus IS 250C 2011: 73 A25 A27 A29 Accd Am1 Am2 Am2 fuse 7.5a Canh Canl Combination meter assembly Computer data lines system Ctsw D11 Door ind Efii Efio Engine control module (left front of engine compt) Gauge fuse 7.5a Gnd Gnd2 Hot at all times Hot in on or start Id code box (center of dash) Ig1d Ig2 or dome +b Ig2d Ign fuse 10a Imi Imo Inds Indw Input circuit J/c a29 & j10 (left kick panel) J/c a33 (right kick panel) J/c j10 (left kick panel) J/c j71 (right side of dash) J/c j80 (right side of dash) J10 J2 (under center console) Ja3 Jp2 Left cowl side j/b (left end of dash) Lin Lin1 Master ind Micro computer Micro computer (sub) Mpx1 Mpx2 Multi information display Pnk Power distribution system Power source control ecu (right side of dash) Red Right cowl side j/b (right end of dash) Security fuse 7.5a Shift interlock system Sksw Slp Slr+ Spd Ssw1 Ssw2 Starting/charging system Steering lock actuator (steering column) Stop lamp switch (a/t) (left side of dash) Stop sw fuse 7.5a Stp Str1 Str2 Stsw Swil Tach
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Lexus IS 250C 2011 List of elements for Electrochromic Mirror Wiring Diagram for Lexus IS 250C 2011: 38 +b1 +b3 A29 D11 D29 Dome fuse 10a Ec+ Ec- Ecu-ig lh fuse 10a Engine room r/b 1 (right rear of engine compt) Garage door opener Gnd Gnd5 Hot at all times Hot in on or start Ig1 Inner rear view mirror J/c a29 & j10 (left kick panel) J/c j70 (right side of dash) J/c j71 (right side of dash) J/c j80 (right side of dash) J10 J2 (under center console) Jp2 Jq1 Jr2 L10 Left cowl side j/b (left end of dash) Left outer mirror control ecu (left front door) Left outer rear view mirror assembly Lp1 M10 Map light assembly Mq1 Pnk Right cowl side j/b (right end of dash) Right outer mirror control ecu (right front door) Right outer rear view mirror assembly Power Mirrors Wiring Diagram for Lexus IS 250C 2011 List of elements for Power Mirrors Wiring Diagram for Lexus IS 250C 2011: 40 (left "b" pillar) q1 Acc fuse 7.5a Adjust switch D27 Defogger system Down Ec+ Ec- Electrochromic mirror circuit Exterior lights system Foot light Hot w/ acc relay energized Ill+ Ill- Interior lights system J/c j27 (left side of dash) J/c m14 (driver's door) Jp2 Jq1 Left Left outer rear view mirror assembly Left/ up Lp1 Mirror heater Mlh Mlp Mlp- Mlv Mq1 Mrh Mrv Outer mirror switch assembly Red Right Right cowl side j/b (right end of dash) Right outer rear view mirror assembly Right/ down Select switch Trnl Turn
POWER SEATS Climate Control Seats Wiring Diagram (1 of 2) for Lexus IS 250C 2011 List of elements for Climate Control Seats Wiring Diagram (1 of 2) for Lexus IS 250C 2011: 50 15a A/c fuse 7.5a A27 Bllh Blrh Ctb D13 D20 D29 Ecu-ig lh fuse 10a Engine room j/b 1 (right rear of engine compt) Exterior lights system Fr s/ htr lh fuse Gnd Hot at all times Ill+ Ill- Interior lights system J/c j27 (left side of dash) J/c j70 (right side of dash) J/c q7 & u1 (under driver's seat) J/c u11 (under driver's seat) J1 (left kick panel) J30 Jk1 Jp2 Jq1 Left cowl side j/b (left end of dash) Left seat back climate control blower (driver's seat back) Left seat cushion climate control blower (driver's seat cushion) Left seat heater control sub assembly Lh j/b-am fuse 80a Lh-ig2 relay Panel fuse 7.5a Pnk Pt1 Q1 (left "b" pillar) Red Rel1 Seat back Seat cushion Seat heater control Seat heater switch Sign Svs5 Svsg Swl Tail relay Thermistor Thl Climate Control Seats Wiring Diagram (2 of 2) for Lexus IS 250C 2011 List of elements for Climate Control Seats Wiring Diagram (2 of 2) for Lexus IS 250C 2011: 38 A/c amplifier (center of dash) Ctb D12 D13 Fr s/ htr rh fuse 15a Gnd Hot w/ rh-ig1 relay energized Ig+ Ig1d J/c t11 (front passenger's seat) J/c t14 (under front passenger's seat) J58 J59 Jp2 Jq1 Lout P1 (right side of crossmember) Pnk Power source control ecu (right side of dash) Pt1 Red Rh-ig fuse 7.5a Right cowl side j/b (right end of dash) Right seat back climate control blower (front passenger's seat back) Right seat cushion climate control blower (front passenger's seat cushion) Right seat heater control sub assembly Rout S5-4 Seat back Seat cushion Seat heater control Sg-4 Sign Sw4 Sw5 Swr Thermistor Thr Driver Power Seat Wiring Diagram for Lexus IS 250C 2011 List of elements for Driver Power Seat Wiring Diagram for Lexus IS 250C 2011: 21 Down Fr p/ seat lh fuse 30a Front Front vertical Hot at all times J/c q7 & u1 (under driver's seat) J22 Left cowl side j/b (left end of dash) Left front lumbar power seat switch Left front lumbar support motor (in driver's seat) Left front power seat lift position motor (in driver's seat) Left front power seat reclining position motor assembly (in driver's seat) Left front power seat slide position motor assembly (in driver's seat) Left front power seat switch Left front power seat vertical position motor assembly (under driver's seat) Lifter Q1 (left "b" pillar) Rear Reclining Red Slide Passenger Power Seat Wiring Diagram for Lexus IS 250C 2011 List of elements for Passenger Power Seat Wiring Diagram for Lexus IS 250C 2011: 23 (front passenger's seat) j/c t11 Down Fr p/ seat rh fuse 30a Front Front vertical Hot at all times J29 Lifter P1 (right side of crossm- ember) Pt1 Rear Reclining Red Right cowl side j/b (right end of dash) Right front lumbar power seat switch Right front lumbar support motor (front passenger's seat) Right front power seat lift position motor (under front passenger's seat) Right front power seat reclining position motor assembly (front passenger's seat) Right front power seat slide position motor assembly (front passenger's seat) Right front power seat slide switch assembly Right front power seat switch Right front power seat vertical position motor (under front passenger's seat) Slide
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram (1 of 3) for Lexus IS 250C 2011 List of elements for Power Top/Sunroof Wiring Diagram (1 of 3) for Lexus IS 250C 2011: 87 (left "c" pillar) left quarter power window regulator motor (left side of trunk) (right "b" pillar) right quarter power window regulator motor (right rear of vehicle) p2 (right side of roof) roof front lock motor (sliding roof drive gear sub-assembly) (right side of roof) roof front lock switch (removable roof lock sub-assembly) Auto Cls Down Hall ic Hlm+ Hlm- Hot at all times J/c j70 (right side of dash) J1 (left kick panel) Jp2 Jq1 Jr1 Lcr+ Lcr- Lcrf Lcrh Lcrp Lcrs Left cowl side j/b (left end of dash) Lh roof fuse 30a Lmr+ Lmr- Lor Lpr Lprb Lpre Luggage room r/b (left side of trunk) Mp1 Mp2 Mp3 Mpm+ Mpm- Opn P-tray main fuse 30a P1 (right side of crossmember) P2 (right rear of vehicle) P53 P54 P55 Package tray trim bracket Pnk Pe1 Q1 (left "b" pillar) Q33 Qp1 Qwl+ Qwl- Qwr Qwr+ Qwr- Qk2 R3h1 R3r R3r+ R3r- R3rb R3re Rcr Red Rh lgg fuse 30a Rh lgg lck fuse 30a Rh roof fuse 30a Rh2 Right roof close switch (right removable roof auxiliary catch assembly) Right roof panel strength sub-assembly Right slide roof motor assembly (right side of trunk) Rlr Rml+ Rml- Rmr+ Rmr- Ror Rpr Rprb Rpre Sliding roof control ecu (center of trunk) Sliding roof switch assembly (left side of dash) Tr2 Tr2e Under side tonneau cover switch (right deck side trim box) Wadn Power Top/Sunroof Wiring Diagram (2 of 3) for Lexus IS 250C 2011 List of elements for Power Top/Sunroof Wiring Diagram (2 of 3) for Lexus IS 250C 2011: 51 (right end of dash) right cowl side j/b (under center console) j2 A10 A24 A25 Combination meter Computer data lines system D11 D14 Ecu-ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Gauge fuse 7.5a Gnd2 Hall ic Hot at all times Hot w/ ig 2 relay energized Hot w/ rh-ig 1 relay energized Ig2 or dome +b Input circuit J/c j27 (left side of dash) J/c j71 (right side of dash) J/c j80 (right side of dash) J21 J4 (right kick panel) J75 Jq1 Left luggage compartment door hinge assembly Lgcy Luggage compartment door assembly Luggage door opening cancel switch assembly Main body ecu Master ind Micro computer Micro computer (sub) Mpx + Mpx - Mpx-b fuse 10a Mpx1 Mpx2 Multi information display P2 (right rear of vehicle) P58 P59 Pnk Q2 (left side of trunk) Q42 Q43 Red Right cowl side j/b (right end of dash) Right luggage compartment door hinge assembly Tsw Power Top/Sunroof Wiring Diagram (3 of 3) for Lexus IS 250C 2011 List of elements for Power Top/Sunroof Wiring Diagram (3 of 3) for Lexus IS 250C 2011: 81 (left end of dash) left cowl side j/b (left side of roof) roof rear lock motor (sliding roof drive gear sub-assembly) (left side of trunk) q2 3lm+ 3lm- Back window lock assembly Computer data lines system D18 Ecub Exterior lights system Fls Hall ic Hot at all times J27 Jq1 Jr1 Lcl+ Lcl- Lclf Lclh Lclp Lcls Lct Left roof close switch (left removable roof auxiliary catch assembly) Left roof panel strength sub-assembly 2 Left slide roof motor assembly Lh lgg fuse 30a Lh lgg lck fuse 30a Lh1 Lml+ Lml- Lol Lpl Lplb Lple Luggage room r/b (left side of trunk) Mpx1 P-tray side fuse 7.5a Package tray trim hinge 1 Package tray trim hinge 2 Pnk Q1 (left "b" pillar) Q2 (left side of trunk) Q34 Q35 Q36 Qwl Qf1 Qh1 Qk2 R3cl R3l R3l+ R3l- R3lb R3le R3ll R3ol Rcl Red Rh1 Rpl Rplb Rple Sgnd Sliding roof control ecu (center of trunk) Sml+ Sml- Smr+ Smr- Spl1 Spl2 Spr1 Spr2 Tl 1 Tl 1e Under side tonneau cover switch (left deck side trim box) Under side tonneau cover switch (left side package tray trim cover) Upper side tonneau cover switch (right side package tray trim cover) Wdn Wup
POWER WINDOWS Power Windows Wiring Diagram for Lexus IS 250C 2011 List of elements for Power Windows Wiring Diagram for Lexus IS 250C 2011: 63 (driver's door) j/c m14 (driver's door) m1 (inside left front wheelwell) wireless door lock buzzer A30 A36 Bzr Certification ecu (right side of trunk) Computer data lines system D14 D15 Data Dcty Door control receiver (center of trunk) Ecu- ig rh fuse 10a Fr door lh fuse 20a Fr door rh fuse 20a Gnd Hot at all times Hot w/ rh-ig 1 relay energized Igb J/c a15 (left rear corner of engine compt) J/c j27 (left side of dash) J21 J75 Jq1 Key lock Key unlock Kul Left cowl side j/b (left end of dash) Left front door courtesy light switch assembly Left front door lock assembly (driver's door) Left front power window regulator motor (driver's door) Lp1 Lssr Lsw M1 (driver's door) Main body ecu Mpx1 Mpx2 Mq1 Mq2 P1 (right side of crossmember) P2 (right rear of vehicle) Pct Pls Pls1 Pls2 Pnk Power window regulator master switch assembly Pws Rc0 Rda Red Right cowl side j/b (right end of dash) Right front power window regulator motor assembly Right front power window regulator switch assembly Rssi Sgnd Ssrb Unlock detection Vcc W/ memory seat W/o memory seat
RADIO Radio Wiring Diagram, with Navigation (1 of 5) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, with Navigation (1 of 5) for Lexus IS 250C 2011: 88 (or red) (under steering wheel) spiral cable +b1 A/t A12 Acc Acc fuse 7.5a Agnd Alo Aro Asgn Auxo Back Canh Canl Combination meter Computer data lines system D14 D27 D28 Disp Display & navigation module display Ecu-ig rh fuse 10a Gnd1 Gps antenna Hot at all times Hot in on or acc Hot in on or start Ill+ Ill- Input circuit Instrument cluster system Interior lights system J/c j27 (left side of dash) J24 J3 (under center console) J34 J50 J51 Jq1 Jq3 L10 Left cowl side j/b (left end of dash) Left steering pad switch M/t Macc Main body ecu Mi+ Mi- Micro computer Min+ Min- Mo+ Mo- Mode Mssl Nca Off hook On hook Parking brake switch (below center console) Pkb Pnk Qm1 Red Rev Right cowl side j/b (right end of dash) Right steering pad switch Seek+ Seek- Sgnd Sldi Sldo Sns2 Spd Steering pad switch assembly Stereo jack adapter assembly 1 Sw1 Sw2 Swg Tv 1 fuse 10a Udo+ Udo- Ujsg Upi Voice Vol+ Vol- Wuo Radio Wiring Diagram, with Navigation (2 of 5) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, with Navigation (2 of 5) for Lexus IS 250C 2011: 51 (or red) Acc Agnd Ali Amplifier microphone assembly Antenna Ari Asgn Auxi D22 Gnd Hot at all times Ill+ Ill- Interior lights system J110 J3 (under center console) J99 Jp1 Jr1 Map light assembly Mi+ Mi- Mo+ Mo- Multimedia interface ecu (if equipped) (lower right side of dash) Nca Ntsc Rad 3 fuse 10a Radio receiver assembly Red Right cowl side j/b (right end of dash) Sdars antenna Sld Sldi Txi+ Txi- Udi+ Udi- Uesg Ugd1 Ulo+ Upo Uro+ Usd1 W/ lexus enform W/ sdars W/o lexus enform Wui Wuo Mj1 Radio Wiring Diagram, with Navigation (3 of 5) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, with Navigation (3 of 5) for Lexus IS 250C 2011: 45 (right side of trunk) p3 +b2 12 speakers 8 speakers Ap1 Ctr+ Ctr- Engine room r/b 1 (right rear of engine compt) Fl- Fr+ Fr+ fl+ Fr- Gnd Gnd2 Hot at all times Instrument cluster system Mi+ Mi- Mo+ Mo- Nca P27 P28 P29 P51 Pnk Rad 1 fuse 30a Rad 2 fuse 30a Red Rl+ Rl- Rr+ Rr- Sldi Sldo Spd Stereo component amplifier (right side of trunk) Tmut Wf1+ fl+ Wf2+ Wfl+ Wfl- Wfr+ Wfr- Wui Radio Wiring Diagram, with Navigation (4 of 5) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, with Navigation (4 of 5) for Lexus IS 250C 2011: 22 +tw -tw 12 speakers 8 speakers Front speaker assembly 4 (12 speakers) Jk1 Jp2 Left front speaker assembly 2 & 3 (front speaker assembly 3) Left rear speaker 2 assembly Left rear speaker assembly Lp2 Mq2 Nca Pnk Qp1 Red Right front speaker assembly 2 & 3 Right rear speaker 2 assembly Right rear speaker assembly Stereo component speaker assembly W/ lexus enform W/o lexus enform Radio Wiring Diagram, with Navigation (5 of 5) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, with Navigation (5 of 5) for Lexus IS 250C 2011: 63 +b2 Acc Acc1 Agnd Ca+ Cb+ Cgnd Computer data lines system Cv+ Cv- Dcm (telematics transceiver) (w/ lexus enform) j107 (right side of dash) Display & navigation module display Gnd Gnd1 Ieee Ieee connector (hdd navigation system) J101 J104 J106 J52 J62 J63 Jp2 Jq3 Left front speaker assembly 1 Lp2 Mci+ Mci- Mco+ Mco- Mcvd Mq2 Multimedia module navigation assembly (w/ dvd navigation system) Mute Nca Pnk Qp1 Qh1 Rear television camera assembly Red Right front speaker assembly 1 Sgnd Spi+ Spi- Spo+ Spo- Tx2+ Tx2- Txm+ Txm- Usb Usbg Usbv Va- Val+ Var+ Vor+ Vor- Vot+ Vot- Vv+ Vv- Z10 Radio Wiring Diagram, without Navigation (1 of 3) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, without Navigation (1 of 3) for Lexus IS 250C 2011: 81 (or red) Acc Acc fuse 7.5a Agnd Ali Antenna Ari Asgn Atx+ Atx- Auxi Cdl+ Cdl- Cdr+ Cdr- Computer data lines system Csld D22 D27 Gnd Hot at all times Hot in on or acc Ill+ Ill- Instrument cluster system Interior lights system Ivo+ Ivo- J/c j27 (left side of dash) J100 J110 J23 J3 (under center console) J95 J96 J97 J98 J99 Jp1 Jq3 Macc Mic+ Mic- Multimedia interface ecu (if equipped) (lower right side of dash) Mut1 Mute Nca Pnk Rad 3 fuse 10a Radio receiver assembly Red Right cowl side j/b (right end of dash) Sdars antenna Sgnd Sld Sldi Sns2 Spd Sw1 Sw2 Swg Tx+ Tx- Tx1+ Tx1- Tx2+ Tx2- Txm+ Txm- Udi+ Udi- Uesg Ulo+ Ulo- Upo Uro+ Uro- Usd1 W/ safety connect W/ sdars W/o safety connect Radio Wiring Diagram, without Navigation (2 of 3) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, without Navigation (2 of 3) for Lexus IS 250C 2011: 32 (right side of dash) (w/ safety connect) dcm (telematics transceiver) Agnd Alo Amplifier microphone assembly Aro Asgn Auxo J101 Jr1 Mci+ Mci- Mco+ Mco- Mcvd Mute Nca Pnk Qm1 Red Sgnd Spi+ Spi- Spo+ Spo- Stereo jack adapter assembly 1 (w/ multimedia interface ecu) Udo+ Udo- Ujsg Upi W/ safety connect W/o safety connect Mj1 Radio Wiring Diagram, without Navigation (3 of 3) for Lexus IS 250C 2011 List of elements for Radio Wiring Diagram, without Navigation (3 of 3) for Lexus IS 250C 2011: 67 +b2 Acc Ap1 Combination meter Computer data lines system Disp Engine room r/b 1 (right rear of engine compt) Fl+ Fl- Fr+ Fr- Gnd Gnd2 Hot at all times Ii1+ Ii1- Instrument cluster system J24 J34 Jp2 Left front speaker assembly 1 Left front speaker assembly 2 & 3 (front speaker assembly 3) Left rear speaker assembly Left steering switch Lp2 Micro computer Mode Mq2 Mssl Mute Off hook On hook P27 P28 P3 (right side of trunk) P30 P51 Pnk Qp1 Rad 2 fuse 30a Red Right front speaker assembly 1 Right front speaker assembly 2 & 3 (front speaker assembly 3) Right rear speaker assembly Right steering switch Rl+ Rl- Rr+ Rr- Seek+ Seek- Spd Spiral cable (under steering wheel) Steering pad switch Stereo component amplifier (right side of trunk) Tmut Tx+ Tx- Voice Vol+ Vol- W/ safety connect W/o safety connect Wfl+ Wfl- Wfr+ Wfr-
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Lexus IS 250C 2011 List of elements for Shift Interlock Wiring Diagram for Lexus IS 250C 2011: 48 (right rear of engine compt) +bs A2 (left rear of engine compt) A29 Abs 2 fuse 30a Ae1 Brake actuator assembly Brake pedal load sensing switch (left side of dash) Canh Canl Computer data lines system D12 D13 D29 Ecu-ig lh fuse 10a Engine control module (left front of engine compt) Engine room j/b 1 Fsw+ Hot at all times Ig1d J/c a20 (left end of dash) J/c a29 & j10 (left kick panel) J/c a33 (right kick panel) J/c a9 (left side of engine compt) J/c j70 (right side of dash) J1 (left kick panel) J10 L10 Left cowl side j/b (left end of dash) Lh ig1 relay Lh ig2 relay Lh-ig fuse 10a Mpx1 Mpx2 Park/ neutral position switch (on transmission) Parking brake switch (below center console) Pkb Pnk Power source control ecu (right side of dash) Red Right cowl side j/b (right end of dash) Shift lock control ecu (under center console) Shift lock solenoid Sls+ Sls- Stop lamp switch (left side of dash) Stop sw fuse 7.5a Stp Steering Column Wiring Diagram for Lexus IS 250C 2011 List of elements for Steering Column Wiring Diagram for Lexus IS 250C 2011: 27 (under center console) j2 25a A27 D11 Engine room r/b 2 (left side of engine compt) Gnd Hot at all times Hot w/ ig2 relay energized Id code box (center of dash) Ig2 Ige Ign fuse 10a J/c j71 (right side of dash) J/c j80 (right side of dash) J2 (under center console) Ja3 Lin Lin1 Power source control ecu (right side of dash) Red Right cowl side j/b (right end of dash) Sgnd Slp Slp1 Slr+ Steering lock actuator (steering column) Str lock fuse
STARTING/CHARGING Charging Wiring Diagram for Lexus IS 250C 2011 List of elements for Charging Wiring Diagram for Lexus IS 250C 2011: 49 (or red) +ig A10 A24 A25 Ae1 Alt Alt fuse 150a Alt-s fuse 7.5a Battery Ca1h Ca1l Canh Canl Charge indicator Combination meter Computer data lines system D12 D13 E/g-b fuse 60a Engine control module (left front of engine compt) Engine room j/b 1 (right rear of engine compt) Engine room r/b 1 (right rear of engine compt) Engine room r/b 2 & engine room j/b 2 (left side of engine compt) Gauge fuse 7.5a Generator Hot at all times Hot w/ ig 2 relay energized Ig1d Input circuit J/c a8 (left side of engine compt) J/c j27 (left side of dash) J1 (left kick panel) J34 J4 (right kick panel) Left cowl side j/b (left end of dash) Lh- ig 1 relay Lh-ig fuse 10a Micro computer Mpi1 Mpi2 Mpx+ Mpx- Mpx-b fuse 10a Network gateway ecu (right side of dash) Pnk Power source control ecu (right side of dash) Right cowl side j/b (right end of dash) Starter Starting Wiring Diagram for Lexus IS 250C 2011 List of elements for Starting Wiring Diagram for Lexus IS 250C 2011: 42 2.5l 3.5l A2 (left rear of engine compt) A29 Accr Ae1 Battery Clutch start switch assembly (m/t) Ctsw D11 Engine control module (left front of engine compt) Engine room j/b 1 & engine room r/b 1 (right rear of engine compt) Engine room r/b 1 (right rear of engine compt) Engine room r/b 2 (left side of engine compt) Engine switch (center of dash) Ig 2 relay Ig2d J/c a29 & j10 (left kick panel) J/c a7 & a8 (left side of engine compt) J/c j71 (right side of dash) J/c j80 (right side of dash) J10 J4 (right kick panel) Ja3 Ksw Park/neutral position switch (a/t) (on transmission) Power distribution system Power source control ecu (right side of dash) Red Right cowl side j/b (right end of dash) Sksw Ssw1 Ssw2 St cut relay Sta Star Starter Starter fuse 30a Starter relay Str1 Str2 Stsw
SUPPLEMENTAL RESTRAINTS Pre-Collision Wiring Diagram for Lexus IS 250C 2011 List of elements for Pre-Collision Wiring Diagram for Lexus IS 250C 2011: 47 A10 A25 Ba2 Brake actuator assembly Can h Can l Combination meter Computer data lines system Distance control ecu (left side of dash) Ecu- ig rh fuse 10a Gauge fuse 7.5a Hot at all times Hot w/ ig 2 relay energized Hot w/ rh ig 1 relay energized Ig+ Ig1 Igb Input circuit J15 J34 J4 (right kick panel) Ja4 Left front seat pre-collision seat belt motor (left "c" pillar) Lrdd Lrrd Luggage room r/b (left side of trunk) Micro computer Millimeter wave radar sensor (front of vehicle) Mol+ Mol- Mor+ Mor- Mpx+ Mpx- Ok2 Op1 P2 (right rear of vehicle) P48 P49 Pcs ind Pgnd Pnk Psb fuse 30a Red Right cowl side j/b (right end of dash) Right front seat pre-collision seat belt motor Seat belt control ecu (left side of trunk) Supplemental Restraint Wiring Diagram (1 of 3) for Lexus IS 250C 2011 List of elements for Supplemental Restraint Wiring Diagram (1 of 3) for Lexus IS 250C 2011: 87 (left end of dash) left cowl side j/b (right end of dash) right cowl side j/b (right side of dash) power source control ecu (under center console) j2 +sl +sr -sl -sr Air bag sensor seat position Bbl+ Bbl- Bbr+ Bbr- Bcd+ Bcd- Bcl+ Bcl- Bcp+ Bcp- Bcr+ Bcr- Body ecu Buckle switch Canh Canl Case gnd Center air bag sensor assembly (under center console) Computer data lines system D12 pnk D2+ D2- D6 pnk Dbe+ Dbe- Dk+ Dk- Dsp+ Dsp- Ecu-ig rh fuse 10a Fsr+ Fsr- Gauge fuse 7.5a Gsw Gsw3 Hot at all times Hot w/ ig 2 relay energized Ig1d Ig2 Ign fuse 10a J21 J26 pnk J4 (right kick panel) J47 J75 Ja1 Left door side air bag sensor (left "b" pillar) Left front pretensioner (left "b" pillar) Left front seat inner belt Left side air bag sensor (left "c" pillar) Left side air bag squib circuit Mpx1 Mpx2 P-ab P14 P2+ P2- Paon Pd+ Pd- Pk+ Pk- Pl1 Pnk Pp+ Pp- Q32 Qm1 Red Rh-ig1 relay Right cowl side j/b (right end of dash) Right door side air bag sensor (right "b" pillar) Right side air bag sensor (right "c" pillar) Sfd+ Sfd- Sfp+ Sfp- Sound systems Supplemental Restraint Wiring Diagram (2 of 3) for Lexus IS 250C 2011 List of elements for Supplemental Restraint Wiring Diagram (2 of 3) for Lexus IS 250C 2011: 44 (left front of engine compt) (left side of dash) driver side 2nd step air bag squib (left side of dash) driver side air bag squib (left side of dash) j/c j27 (left side of radiator) left front air bag sensor (right side of dash) front passenger's side air bag squib (instrument panel passenger w/o door air bag assembly) (right side of dash) network gateway ecu (right side of radiator) right front air bag sensor +sl +sr -sl -sr A21 Ca1h Ca1l Canh Canl Clock assembly Computer data lines system D17 Engine control module Ig+ Integration control & panel assembly J25 Ja1 Ja5 Left cowl side j/b (left end of dash) Lower instrument panel air bag assembly 1 Lower instrument panel air bag assembly 2 Mpd1 Mpd2 Mpi1 Mpi2 P ab Paon Pbew Pnk Right front pretensioner (right "b" pillar) Right side air bag squib circuit Second step Spiral cable sub- assembly W/ front passenger's air bag on/off indicator light w/ front passenger's seat belt warning light W/ navigation W/o navigation Supplemental Restraint Wiring Diagram (3 of 3) for Lexus IS 250C 2011 List of elements for Supplemental Restraint Wiring Diagram (3 of 3) for Lexus IS 250C 2011: 59 +ig Anti-lock brakes system Ba2 Bgnd Brake actuator assembly Bsw Buckle switch Ca1h Ca1l Can h Can l Canh Canl Combination meter assembly Computer data lines system D12 D13 D29 Dia Distance control ecu (left side of dash) Ecu-ig lh fuse 10a Fsr+ Fsr- Gbt Gnd Gps Hot at all times Igb Input circuit J/c j27 (left side of dash) J/c j70 (right side of dash) J1 (left kick panel) J34 J35 Ja3 Ja4 Left cowl side j/b (left end of dash) Lh-ig2 relay Lrdd Lrrd Micro computer Millimeter wave radar sensor (front of vehicle) Mpx+ Mpx- Occupant classification ecu (if equipped) (under front passenger's seat) Occupant classification sensor (under front passenger's seat) P1 (right side of crossmember) Pblt Pnk Pt2 Red Right front seat inner belt (under front passenger's seat) Seat belt tension sensor (base of right "b" pillar) Skid control buzzer (left side of dash) Srs ind Steering sensor (on steering column) Vbt Vps Yaw rate sensor (under center console)
TRANSMISSION Transmission Wiring Diagram (1 of 3) for Lexus IS 250C 2011 List of elements for Transmission Wiring Diagram (1 of 3) for Lexus IS 250C 2011: 65 (left side of engine compt) +b1 A10 A2 (left rear of engine compt) A24 A25 Accelerator position sensor (left side of dash) Ae1 Batt Canh Canl Computer data lines system D12 D13 E1 (left rear of engine) Efi 2 fuse 10a Efi fuse 25a Efi main relay Engine control module (left front of engine compt) Engine room j/b 2 (left side of engine compt) Engine room r/b 2 pnk Epa Epa2 Etcs fuse 10a Gauge fuse 7.5a Hot at all times Hot w/ ig 2 relay energized Ig1d Ign fuse 10a J/c a10 & e1 (left side of engine compt) J/c a33 (right kick panel) J/c a7 & a8 (left side of engine compt) J/c a9 (left side of engine compt) J/c j27 (left side of dash) J/c j70 (right side of dash) J24 J4 (right kick panel) Ja3 Left paddle shift switch Mrel Paddle shift switch Pnk Power source control ecu (right side of dash) Red Rh ig fuse 7.5a Rh- ig1 relay Right cowl side j/b (right end of dash) Sftd Sftu Shift switch right paddle Spd Spiral cable (under steering wheel) St1- Sta Starting/charging system Steering pad switch Stop lamp switch (left side of dash) Stop sw fuse 7.5a Stp Tach Transmission control switch (below center console) Vcp2 Vcpa Vpa Vpa2 Transmission Wiring Diagram (2 of 3) for Lexus IS 250C 2011 List of elements for Transmission Wiring Diagram (2 of 3) for Lexus IS 250C 2011: 60 (left front of engine compt) engine control module (left side of engine compt) j/c e49 (right side of dash) network gateway ecu +bm A10 A29 A33 Ae1 Brake actuator assembly Ca1h Ca1l Canh Canl Combination meter Computer data lines system E01 E02 E03 E1 (left rear of engine) E2 (right rear of engine) E2g Engine room r/b 1 (right rear of engine compt) Ge01 Hot at all times Ig 2 or dome +b Ig+ Input circuit Intake mass air flow meter (right side of engine compt) J/c a10 & e1 (left side of engine compt) J/c a29 & j10 (left kick panel) J/c a33 & j80 (right kick panel) J10 J34 J4 (right kick panel) J80 Ja3 Me01 Micro computer Mpd1 Mpd2 Mpi1 Mpi2 Mpx+ Mpx- Mpx-b fuse 10a Nca Pnk Pwr ind ect Red Right cowl side j/b (right end of dash) Snow ind ect Sp1 Speedometer Tachometer p Tha Throttle body assembly Thw Vc2 Vta1 Vta2 Transmission Wiring Diagram (3 of 3) for Lexus IS 250C 2011 List of elements for Transmission Wiring Diagram (3 of 3) for Lexus IS 250C 2011: 46 (left rear of engine) e1 (left side of engine compt) j/c e1 (rear of engine) e.f.i engine coolant temperature sensor Ae1 Body ecu Computer data lines system D13 Electronically controlled transmission solenoid (on transmission) Engine control module (left front of engine compt) Eoil Hot at all times Interior lights system J/c j70 (right side of dash) J1 (left kick panel) J75 Left cowl side j/b (left end of dash) Lh ig1 relay Lh-ig fuse 10a Mpx1 Mpx2 Nt+ Nt- Oil Park/neutral position switch (on transmission) Pattern select switch assembly 1 Pnk Pwr Red Right cowl side j/b (right end of dash) Sl1+ Sl1+ red Sl1- Sl2+ Sl2- Slt+ Slt- Slu+ Slu- Snow Sp2+ Sp2- Star Starting/ charging system Starting/charging system Transmission revolution sensor (counter gear) (rear of transmission) Transmission revolution sensor (turbine) (front of transmission)
TRUNK, TAILGATE, FUEL DOOR Trunk & Fuel Door Release Wiring Diagram for Lexus IS 250C 2011 List of elements for Trunk & Fuel Door Release Wiring Diagram for Lexus IS 250C 2011: 64 A11 A24 A28 A30 Acc Acc fuse 7.5a Altb Becu Computer data lines system D11 D18 Engine room r/b 1 (right rear of engine compt) Fr wip fuse 30a Fuel Fuel lid Fuel lid w/ motor lock assembly Fuel opn fuse 10a Fuel opn relay Fusw Gnd Gnd2 Hot at all times Hot in on or acc Hot in on or start Interior lights system J/c j27 (left side of dash) J/c j71 (right side of dash) J/c j80 (right side of dash) J1 (left kick panel) J2 (under center console) J21 J74 J75 Jq1 Left cowl side j/b (left end of dash) Left main body ecu Lgcy Lh-ig fuse 10a Lpsw Luggage Luggage compartment door lock assembly Luggage door opening cancel switch assembly Luggage door opening switch assembly Luggage electrical key switch (center rear of trunk) Luggage room r/b (left side of trunk) Mpx-b fuse 10a Mpx1 Mpx2 Mpxb Pnk Q2 (left side of trunk) Q35 Qh1 Qk3 Red Rh ecu-ig fuse 10a Right cowl side j/b (right end of dash) Right main body ecu Sliding roof control ecu (center of trunk) Ti & te fuse 20a Tkul Tr+ Tsw Wig
WARNING SYSTEMS Seat Belt Warning Wiring Diagram for Lexus IS 250C 2011 List of elements for Seat Belt Warning Wiring Diagram for Lexus IS 250C 2011: 90 (left kick panel) j1 (right side of dash) power source control ecu (under front passenger's seat) occupant classification sensor (under front passenger's seat) right front seat inner belt A/c amplifier (center of dash) A10 A20 A24 A25 Bgnd Body ecu Brake actuator assembly Bsw Buckle switch Ca1h Ca1l Canh Canl Center air bag sensor assembly (under center console) Clock assembly Combination meter Computer data lines system D12 D14 Dbe+ Dbe- Dcty Diode (occupant detection sensor) Door ind Driver's seat belt indicator Ecu-ig rh fuse 10a Engine room r/b 1 (right rear of engine compt) Front passenger's seat belt warning lamp Fsp+ Fsp- Fsr+ Fsr- Gateway ecu (right end of dash) Gauge fuse 7.5a Gps Hot at all times Hot w/ ig 2 relay energized Ig+ Ig1d Ig2 or dome+b Input circuit Integrated control & panel assembly J/c j27 (left side of dash) J21 J34 J35 J4 (right kick panel) J47 J58 J75 Ja3 Jp2 Jq1 Left cowl side j/b (left end of dash) Left front door courtesy switch Left front seat inner belt Micro computer Mpi1 Mpi2 Mpx+ Mpx- Mpx-b fuse 10a Mpx1 Mpx2 Occupant classification ecu (if equipped) (under front passenger's seat) Occupant detection sensor P/sb P1 (right side of crossmember) P14 Passive restraint system Pbew Pblt Pnk Pt1 Pt2 Q32 Red Rh-ig1 relay Right cowl side j/b (right end of dash) Right front seat inner belt (w/o occupant classification system) (under front passenger's seat) Sp1 Tire pressure warning ecu (center of dash) Vps W/ navigation W/o navigation Tire Pressure Monitoring Wiring Diagram for Lexus IS 250C 2011 List of elements for Tire Pressure Monitoring Wiring Diagram for Lexus IS 250C 2011: 66 (right side of dash) power source control ecu +ig A/c amplifier (center of dash) A10 A24 A25 Anfr Anrl Ant1 Ant4 Brake actuator assembly Clsw Combination meter Computer data lines system D12 D13 D29 Ecu-ig lh fuse 10a Engine room r/b 1 (right rear of engine compt) Gauge fuse 7.5a Gnd Gtx+ Gtx- Hot at all times Hot w/ ig 2 relay energized Idsw Ig1d Ig2 or dome+b Input circuit Int J/c j27 (left side of dash) J/c j70 (right side of dash) J1 (left kick panel) J34 J35 J4 (right kick panel) J58 Ja3 Ja6 Jq2 Left cowl side j/b (left end of dash) Left rear tire pressure warning antenna (left rear wheelwell) Lh-ig2 relay Master indicator Micro computer Mpi1 Mpi2 Mpx+ Mpx- Mpx-b fuse 10a Mpx1 Mpx2 Msm+ Msm- Mssl Nca Network gateway ecu (right side of dash) Nsw Pnk Right cowl side j/b (right end of dash) Right front tire pressure warning antenna Satellite set switch Sp1 Tire pressure indicator Tire pressure warning ecu (center of dash) Vsw
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Lexus IS 250C 2011 List of elements for Front Wiper/Washer Wiring Diagram for Lexus IS 250C 2011: 81 (left end of dash) left cowl side j/b (left kick panel) j1 A10 A2 (left rear of engine compt) A24 A25 A30 Auto Circuit input Combination meter assembly Computer data lines system D11 D12 D13 D14 Ecu-ig lh fuse 10a Ecu-ig rh fuse 10a Engine room j/b 2 (left side of engine compt) Engine room r/b 1 (right rear of engine compt) Fr wip fuse 30a Front controller Gauge fuse 7.5a Gnd Gnd2 Head Headlamp washer circuit High Hot at all times Hot w/ ig 2 relay energized Hot w/ lh-ig 1 relay energized Ig+ Ig1d Ig2 Int Int off J/c a15 (left rear corner of engine compt) J/c a9 (left side of engine compt) J/c j27 (left side of dash) J/c j70 (right side of dash) J/c j71 (right side of dash) J/c j80 (right side of dash) J1 (left kick panel) J2 (under center console) J26 J34 J4 (right kick panel) Jq1 Jr2 Left cowl side j/b (left end of dash) Level warning switch assembly Lh-ig 2 relay Low Main body ecu Map light assembly (w/ auto wiper) Micro computer Mist Mpx Mpx+ Mpx- Mpx-b fuse 10a Mpx1 Mpx2 Off Pnk Power source control ecu (right side of dash) Rain sensor (front center of roof at windshield) Rh-ig 1 relay Right cowl side j/b (right end of dash) S/m S/s Sig Switch washer W/ auto wiper W/o auto wiper Wash relay Washer fuse 20a Wig Windshield washer motor & pump assembly (below left headlight) Windshield wiper motor (lower left side of windshield) Windshield wiper switch assembly Wiper switch Headlamp Washer Wiring Diagram for Lexus IS 250C 2011 List of elements for Headlamp Washer Wiring Diagram for Lexus IS 250C 2011: 61 (left end of dash) left cowl side j/b (right end of dash) right cowl side j/b (right rear of engine compt) (right rear of engine compt) engine room r/b 1 A2 (left rear of engine compt) A33 A36 Auto Computer data lines system D12 D13 D14 Ecu-ig rh fuse 10a Engine room j/b 1 Engine room j/b 2 (left side of engine compt) Engine room r/b 2 (left side of engine compt) Front controller Frwa H-lp cln fuse 30a Hdlo Head Head- lp relay Headlamp cleaner control relay (below left headlight) Headlamp cleaner motor & pump assembly (below left headlight) Headlamp cleaner switch assembly Headlamp dimmer switch assembly Headlights system Hot at all times Hrly Ig1d Interior lights system J/c a33 & j80 (right kick panel) J/c a8 (left side of engine compt) J/c a9 (left side of engine compt) J/c j27 (left side of dash) J1 (left kick panel) J2 (under center console) J26 J4 (right kick panel) J74 J80 Ja3 Left cowl side j/b (left end of dash) Lh ig fuse 10a Lh- ig 1 relay Light control switch Main body ecu Main fuse 30a Mpx1 Mpx2 Off Pnk Power source control ecu (right side of dash) Red Rh-ig1 relay Tail Wash relay Washer fuse 20a Washer switch Windshield washer motor & pump assembly (below left headlight) Windshield wiper switch assembly
