Diagram sections — 32 (61 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY COMPUTER COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION PASSIVE RESTRAINTS POWER ANTENNA POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Air Conditioning Wiring Diagrams (2 of 2) for Lexus RX 300 2002 List of elements for Air Conditioning Wiring Diagrams (2 of 2) for Lexus RX 300 2002: 47 (rear side of surge tank) ec A/c condenser fan motor (in right front of engine compt) A/c dual pressure switch A/c magnetic clutch & lock sensor (on a/c compressor assembly) A/c single pressure switch A/c triple pressure switch (on refigerant line, near receiver-drier) A/c triple pressure switch (on refrigerant line, near receiver-drier) Acmg Blower motor (behind right side of dash) Blower motor control relay (near blower motor) Body ecu (behind left side of dash) Computer data lines system Diode (a/c) (behind upper left side of dash) Dome fuse 10a E10 (engine room main wire harn, behind left headlight) E9 (engine room main wire harn, left side of radiator) Ea (on right front fender) Ecu-b fuse 7.5a Ed (behind left headlight) Engine control module (behind right side of dash) Engine room j/b (on left side of engine compt) Fan 1 relay Fan 2 relay Fan 3 relay G10 Gnd Heater relay (beside instrument panel j/b) Hot at all times Ig (right kick panel) Instrument panel j/b (behind left side of dash) J/b 5 (behind upper left side of dash) J/c 1 J/c 10 (behind right side of dash) J/c 2 J/c 4 (behind left kick panel) J/c 9 Lcki Mg clt relay Mpx1 Mpx2 Pre R/b 2 (in engine room j/b) Radiator fan motor (in left front of engine compt) Red Red c Water temperature switch 1 (in right front of engine compt) Water temperature switch 2 (on top rear of engine)
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams (1 of 2) for Lexus RX 300 2002 List of elements for Anti-lock Brake Wiring Diagrams (1 of 2) for Lexus RX 300 2002: 64 (in engine room j/b) A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A33 A34 A35 A37 A38 Abs & ba & trac & vsc actuator (in right front of engine compt) Abs & ba & trac & vsc ecu (behind right side of dash) Abs fuse 60a Abs motor relay Abs sol relay Ast E14 Ea (in eng compt, on right front fender) Fl+ Fl- Fr+ Fr- Fss Fusible link block Gnd1 Gnd2 Headlight beam level control ecu (behind left end of dash) Hot at all times J/c 9 (behind right kick panel) Left front abs speed sensor Master cylinder pressure sensor (right side of engine compt) Pmc Pnk R/b 2 (in engine room j/b) Red Right front abs speed sensor Rlo Sflh Sflr Sfrh Sfrr Shield Smc1 Smc2 Smv1 Smv2 Spdl Spdn Src1 Src2 Srlh Srlr Srrh Srrr Vcm
ANTI-THEFT Anti-theft Wiring Diagram (1 of 2) for Lexus RX 300 2002 List of elements for Anti-theft Wiring Diagram (1 of 2) for Lexus RX 300 2002: 63 (right dash brace) ih A (w/ navigation) A10 B (w/o navigation) Bcty Bdr Bdsl Bdsu Becu Body ecu (behind left side of dash) Bsub C14 Combination meter ecu Cpub Cty Ctye D rr door fuse 20a D12 Door locks system Driver door ecu (in left front door) Engine control module (behind right side of dash) F10 F11 F13 Front passenger door ecu (in right front door) G10 Gauge fuse 7.5a Gnd Gnd1 Gnd2 Hcty Hot at all times Hot in on or start I16 I18 I5 (dash harness, left side of dash) I8 (dash harness, left side of dash) Imld Ind Instrument control panel Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 5 (behind upper left side of dash) J/c 9 (behind right kick panel) K10 Ksw Kul Left front door courtesy switch Lsw Lswa Lswe Mpx+ Mpx- Mpx1 Mpx2 P fr door fuse 20a P rr door fuse 20a Pnk Rdr+ Rdr- Right front door courtesy switch Sig Theft deterrent indicator light Anti-theft Wiring Diagram (2 of 2) for Lexus RX 300 2002 List of elements for Anti-theft Wiring Diagram (2 of 2) for Lexus RX 300 2002: 35 conn j3 conn j4 (top center of dash) if (under left center pillar) bj (under right center pillar) bk B9 (body harness, in right rear door) Back door courtesy switch Bdr Cpub Cty Ctye Door locks system Ecu-b fuse 7.5a Engine hood courtesy switch (on front center of engine compartment) Engine room j/b (on left side of engine compartment) Fl door fuse 20a Gnd Hot at all times I5 (dash harness, left side of dash) J/c 1 (in engine compartment, on right front fender) J/c 14 (in left side of liftgate) J/c 7 (upper left end of dash) Junction connector (left kick panel) Left rear door courtesy switch Left rear door ecu (in left rear door) Lsw Lswe Mpx1 Mpx2 Right rear door courtesy switch Right rear door ecu (in right rear door) Sel1 Sig Theft deterrent horn (in right rear corner of engine compartment) Unlock warning switch
BODY COMPUTER Body Computer Wiring Diagrams for Lexus RX 300 2002 List of elements for Body Computer Wiring Diagrams for Lexus RX 300 2002: 96 (dash harness, center of dash) i6 (right dash brace) ih A10 Acc Air conditioning system Anti-theft & door locks systems Anti-theft & engine controls systems Anti-theft system Bcty Bdsl Bdsu Becu Body ecu (behind left side of dash) Bsub Bzr Bzr2 Cltb Clte Clts Computer data lines system D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 Dbkl Defogger system Dfg Door locks system Door locks system (w/keyless entry) Door locks, headlights, interior lights & power windows systems Drl Exterior lights system F11 F13 Ffgo Ffog Gauge fuse 7.5a Gnd1 Gnd2 Haz Hcty Head Headlights system Horn Horns system Hot at all times Hot in acc or on Hot in on or start Hrly Ile Ind Instrument panel j/b (behind left side of dash) Interior lights system J/b 3 (behind upper center of dash) J/c 5 (behind upper left side of dash) K10 Ksw Lswa Mpx1 Mpx2 Obd2 P fr door fuse 20a Pkb Pnk Power tops system Pwr Radio no. 2 fuse 7.5a Rco Rda Rdr+ Rdr- Red Rr wip fuse 15a Rssi Rwc1 Rwig Rwlm Rwls Rwsw Rww Snow Stpi Tail Transmissions system Trly Warning systems Wig Wiper/washer system
COMPUTER DATA LINES Computer Data Lines for Lexus RX 300 2002 List of elements for Computer Data Lines for Lexus RX 300 2002: 53 A w/o navigation A10 A39 A40 Abs & ba & trac & vsc ecu (behind right side of dash) B w/ navigation B1 (body harn, at left rear door) B11 Bat Body ecu (behind left side of dash) C/c C12 C13 C14 Center air bag sensor assembly (under center of dash) Combination meter ecu (behind combination meter) Cruise control ecu (behind left side of dash) Cruise ind D17 Data link connector (dlc) 3 (under left side of dash) Driver door ecu (in left front door) Ec (rear side of surge tank) Engine control module (behind right side of dash) F15 Front passenger door ecu (in right front door) Hot at all times I12 I16 I18 I6 (dash harness, center of dash) I9 (dash harn, left side of dash) If (top center of dash) Instrument control panel Instrument panel j/b J/b 5 (behind upper left side of dash) J/c j10 (behind right side of dash) Left rear door ecu (in left rear door) Moon roof control ecu (on front center of moon roof) Mpx+ Mpx- Mpx1 Mpx2 Multi- display Obd fuse 7.5a Obd2 P18 Power seat ecu (under driver's seat) R11 R13 Right rear door ecu (in right rear door) Sil Tac Tach
COOLING FAN Cooling Fan Wiring Diagram for Lexus RX 300 2002 List of elements for Cooling Fan Wiring Diagram for Lexus RX 300 2002: 26 (engine harness, left front of engine compartment) A/c condenser fan motor (in right front of engine compt) A/c diode (behind upper left side of dash) A/c single pressure switch A/c triple pressure switch (on refrigerant line near receiver-drier) Acmg Cds fuse 40a E10 Engine control module (behind right side of dash) Engine room j/b (on left side of engine compartment) Fan 1 relay Fan 2 relay Fan 3 relay Fusible link block (in engine room j/b) Heater fuse 15a Hot at all times Hot in on or start Instrument panel j/b (behind left side of dash) J/b 5 (behind upper left side of dash) J/c 1 (in eng compt, on right front fender) J/c 2 (in left front of engine compartment, behind headlight) R/b 2 (in engine room j/b) Radiator fan motor (in left front of engine compartment) Rdi fuse 40a Water temperature switch 1 (in right front of engine compartment) Water temperature switch 2 (on top rear 0f engine)
CRUISE CONTROL Cruise Control Wiring Diagram for Lexus RX 300 2002 List of elements for Cruise Control Wiring Diagram for Lexus RX 300 2002: 53 (center of dash) i6 A14 A40 Abs & ba & trac & vsc ecu (behind right side of dash) B11 B13 C/c C10 C12 C13 C14 Cancel Ccs Combination meter ecu (behind combination meter) Combination switch Cruise Cruise control actuator (left rear of engine) Cruise control ecu (left side of dash) Cruise control ind Cruise control switch Data link connector 3 (under left side of dash) E11 Ecc Ect Ecu-ig fuse 15a Engine control module (behind right side of dash) G13 Gauge fuse 7.5a Gnd Heater fuse 15a Hot at all times Hot in on & start I9 (left side of dash) Idl Idlo If (top center of dash) Instrument panel j/b (left side of dash) J/b 3 (behind upper center of dash) J/b 5 (upper left side of dash) J/c 5 (behind upper left side of dash) Junction connector j/c 4 (left kick panel) Junction connector j/c 8 (right side of dash) K12 K13 Od1 P/n Park/neutral position switch (on top of transaxle) Resume/ accel Set/ coast Spd Stop fuse 20a Stoplight switch Stp
DEFOGGERS Defogger Wiring Diagram for Lexus RX 300 2002 List of elements for Defogger Wiring Diagram for Lexus RX 300 2002: 26 B8 (body harn, in liftgate) Body ecu (behind left side of dash) Dfg Engine room junction block (on left side of engine compartment) Fr def fuse 20a Front window defogger Fusible link block (in engine room junction block) Heater fuse 15a Hot at all times Hot in on or start I3 (dash harness, left side of dash) I4 (dash harn, left side of dash) I6 (dash harness, center of dash) Instrument panel junction block (behind left side of dash) J/c 14 (in left side of tailgate) J/c 5 (left kick panel) J/c 5 (upper left side of dash) J/c 9 (behind right kick panel) Left remote control mirror Mirror heater Mirror heater relay (in relay block 1) Noise filter Rear defog relay Rear window defogger Right remote control mirror Rr def fuse 30a
ENGINE PERFORMANCE
3.0L 3.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus RX 300 2002 List of elements for 3.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus RX 300 2002: 69 (dash harn, right side of dash) i11 (engine harn, e5 right side of engine) (front side of engine) counter gear speed sensor (left rear of engine) left camshaft timing oil control valve (right rear of engine) right camshaft timing oil control valve Aci1 Acis Afl+ Afl- Afr+ Afr- Braided Crankshaft position sensor (front side of engine) Dsl E01 E02 E03 E04 E05 E2g E6 (engine harn, rear of engine) Eb (behind right of surge tank) Ec (rear side of surge tank) Electronically controlled transmission solenoid (in transaxle) Engine control module (behind right side of dash) Evp1 Fuel injectors Hafl Hafr I11 Idle air control valve (on top right rear of engine) Igf Ignition coils & ignitors Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 J/c 10 (behind right side of dash) Knkl Knkr Knock sensor 1 (top right side of engine) Knock sensor 2 (top left side of engine) Left vvt sensor (left rear of engine) Mass airflow meter (near air cleaner housing, on air duct) Nc+ Nc- Ne+ Ne- Noise filter (near air cleaner housing) Oc1+ Oc1- Oc2+ Oc2- Power steering oil pressure switch (right rear of engine compt) Red Right vvt sensor (right rear of engine) Rso Sl1+ Sl1- Sl2+ Sl2- Tha Tho Thw Vta1 Vv1+ Vv2+ 3.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus RX 300 2002 List of elements for 3.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus RX 300 2002: 35 (behind left side of dash) r/b 1 (dash harn, left side of dash) (engine harn, rear of engine) (in engine room j/b) r/b 2 A/f heater relay A/f htr fuse 25a Acc Air fuel ratio sensor (bank 1, sensor 1) (right exhaust manifold) Air fuel ratio sensor (bank 2, sensor 1) (left exhaust manifold) Am2 Bi (upper left side of rear axle housing) Braided Circuit opening relay Ec (rear side of surge tank) Efi fuse 20a Efi relay Engine room j/b (on left side of engine compt) Fuel pump & sender (on top of fuel tank) Heated oxygen sensor (bank 1, sensor 2) (in exhaust, rear of catalytic converter) Hot at all times Ig2 Ign fuse 7.5a Ignition switch Instrument panel j/b (behind left side of dash) J/c 10 (behind right side of dash) J/c 12 (in left side of luggage compt) J/c 2 (in left front of engine compt, behind headlight) J/c 3, j/c 4 (behind j3 left kick panel) Lock P/n Park/neutral position switch (on transaxle) Red St2 Start Starter fuse 7.5a 3.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus RX 300 2002 List of elements for 3.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus RX 300 2002: 45 (dash harn, right side of dash) (under left side of dash) data link connector 3 A10 Bat C12 C14 Combination meter Computer data lines system E10 E11 Ec (rear side of surge tank) Engine coolant temperature sensor (top front of engine) Heater fuse 15a Hot at all times Hot in on or start I11 I12 I6 (engine harn, rear of engine) Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 10 (behind right side of dash) K12 K13 Malf ind lamp Mpx1 Mpx2 O/d off ind Obd fuse 7.5a Ptnk Sil Spd Stop fuse 20a Stoplight switch Tac Tach Throttle position sensor (on throttle body) Vapor pressure sensor (under center rear of vehicle) Vss Vsv (acis 1) (on top center of engine) Vsv (acis 2) (on top center of engine) Vsv (acm) (on right front center of engine compt) Vsv (canister closed valve) (left rear of engine compt) Vsv (evap) (on top center of engine) Vsv (pressure switching valve) (under center rear of vehicle) 3.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus RX 300 2002 List of elements for 3.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus RX 300 2002: 73 (behind left side of dash) cruise control ecu (behind upper center of dash) j/b 3 (behind upper left side of dash) j/c 7 (dash harn, center of dash) i6 (dash harn, right side of dash) (on left front corner of engine) oil pressure switch (on transaxle) turbine speed sensor A/c system A/t indicator switch (integral to park/neutral position switch) (on transaxle) A39 Abs & ba & trac & vsc ecu (behind right side a40 of dash) Abs & ba & trac & vsc ecu (behind right side of dash) Acm1 Acmg Batt Body ecu (behind left side of dash) Ccv Code Computer data lines system Cooling fans system Ect Efi+ Efi- Electronically controlled transmission solenoid (in transaxle) Eng+ Eng- Engine control module (behind right side of dash) Gauge fuse 7.5a Generator Hot in on or start Hts I11 Idl Idlo If (top center of dash) Igsw Ih (right dash brace) Imld Instrument panel j/b (behind left side of dash) J/c 8 (behind right side of dash) Ksw Lcki Mops Mpx1 Mpx2 Mrel Neo Nsw Nt+ Nt- O/d main switch Od1 Odlp Odms Oxs Pnk Pre Ptnk Red Rxck Sil Slt+ Slt- Spd Sta Stp Tach Tbp Transponder key amplifier (in steering column) Trc+ Trc- Txct Unlock warning switch
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Lexus RX 300 2002 List of elements for Back-up Lamps Wiring Diagram for Lexus RX 300 2002: 12 Back-up light switch (integral to park/neutral position switch, on transaxle) Gauge fuse 7.5a Hot in on or start Instrument panel j/b (behind left side of dash) J/c 13 (in left side of liftgate) J/c 14 (in left side of liftgate) J/c 8 (behind right side of dash) Left back-up light Left rear combination light R10 Right back-up light Right rear combination light Exterior Lamps Wiring Diagram (1 of 2) for Lexus RX 300 2002 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Lexus RX 300 2002: 50 (engine harness, left front of engine compartment) e12 (engine harness, right front of engine compartment) e1 (top center of dash) if Body ecu (behind left side of dash) Conn b5 Conn b7 Conn b8 E12 (engine harness, left front of engine compartment) E2 (engine harness, right front of engine compartment) Ehw Gauge fuse 7.5a Gnd Haz Hazard switch Head Hot at all times Hot in on or start Illum Instrument panel j/b (behind left side of dash) Interior lights system J/b 5 (behind upper left side of dash) J/c 1 (in engine compartment, on right front fender) J/c 11 (in left side luggage compt) J/c 12 (in left side of luggage compartment) J/c 14 (in left side of liftgate) J/c 2 (in left front of engine compartment, behind headlight) J/c 7 (upper left side of dash) J/c 9 (behind right kick panel) Left Left front side marker light Left parking light Left rear combination light Left rear side marker light Left rear turn signal light Left stop light Left tail- light License plate light Light control switch (part of combination switch) Off Right Right front side marker light Right parking light Side of rear axle housing) bi Stpi Tail Tail fuse 10a Taillight relay Trly Turn signal flasher Turn signal switch (part of combination switch) Exterior Lamps Wiring Diagram (2 of 2) for Lexus RX 300 2002 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Lexus RX 300 2002: 54 (behind combination meter) combination meter ecu (right dash brace) ih Bi (upper left side of rear axle housing) C10 C11 C12 C14 E10 E11 E12 Engine room j/b (on left side of engine compartment) Gnd Hazard fuse 15a Heater fuse 15a High mounted stop- light Hot at all times Hot in on or start Hs- Instrument panel j/b (behind left side of dash) J/b 3 (behind left kick panel) J/b 5 (behind upper left side of dash) J/c 1 (in engine compartment, on right front fender) J/c 12 (in left side of luggage compartment) J/c 13 (in left side of liftgate) J/c 14 (in left side of liftgate) J/c 15 (under right rear seat) J/c 2 (in left front of engine compartment, behind headlight) Junction connectors 3, 4 (in left kick panel) K13 L/s Left front turn signal light Left turn signal light Light failure sensor (in left side of luggage compartment) Lt/s R/t R10 Rear lights warning light Red Right front turn signal light Right rear combination light Right rear side marker light Right rear turn signal light Right stop light Right tail- light Right turn signal light Rt/s Solid state St + St- Stop fuse 20a Stop- light switch Towing fuse 20a Trailer converter (forward of left taillight) Trailer socket (below left side of rear bumper)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 5) for Lexus RX 300 2002 List of elements for Ground Distribution Wiring Diagram (1 of 5) for Lexus RX 300 2002: 52 (engine harness, near battery) e9 (engine harness, right front of engine compartment) e2 A/c dual pressure switch A/c magnetic clutch & lock sensor A/c single pressure switch A/c triple pressure switch A35 Abs & ba & trac & vsc ecu actuator Contact Data link connector (dlc) 3 E01 E02 E03 E04 E05 E11 (engine harness, left front of engine compartment) E12 (engine harness, left front of engine compartment) E4 (engine harness, top front of engine) Eb (behind right of surge tank) Ec (rear side of surge tank) Engine control module Engine room j/b (on left side of engine compartment) Fan 2 relay Headlight ecu Heated oxygen sensor (bank 1 sensor 2) I12 (dash harness, right side of dash) Idle air control valve Ignition coil & ignitor 1 Ignition coil & ignitor 2 Ignition coil & ignitor 3 Ignition coil & ignitor 4 Ignition coil & ignitor 5 Ignition coil & ignitor 6 Junction connector j/c 1 (in engine compartment, on right front fender) Junction connector j/c 10 (behind right side of dash) Junction connector j/c 2 (in left front of engine compartment, behind headlight) Left front fog- light Left front side marker light Left front turn signal light Left headlight (low beam) Left headlight ecu Left parking light R/b 2 Radiator fan motor Right front foglight Right front turn signal light Right headlight (low beam) To engine room j/b (cavity f4) (diagram 4 of 5) To j/c 1 (diagram 2 of 5) W/ hid W/o hid Water temperature switch 1 Ground Distribution Wiring Diagram (2 of 5) for Lexus RX 300 2002 List of elements for Ground Distribution Wiring Diagram (2 of 5) for Lexus RX 300 2002: 54 A w/o navigation B w/ navigation B12 Body ecu C11 C14 C22 Cd automatic changer Cigarette lighter Combination meter ecu Daytime running light resistor or short connector Driver's seat heater switch Drl 3 relay Drl 4 relay E10 E11 E3 (engine harness, right front of engine compartment) Electronic controlled transmission pattern select switch Engine hood courtesy switch F10 F11 F13 From j/b 3 (diagram 2 of 5) From j/c 1 (diagram 1 of 5) Front passenger's seat heater switch Fuel sender (sub) Glove box light Gnd Gnd 1 Gnd 2 H10 Hazard switch I16 I18 I7 (dash harness, right side of dash) Ih (right dash brace) Instrument control panel Junction connector j/b 3 (behind upper center of dash) Junction connector j/c 1 (in engine compartment, on right front fender) Multi- display O/d main switch R/b 3 (on front center of engine compartment, on radiator support) R28 Radio & player Remote control mirror switch Right front side marker light Right parking light Seat memory switch Shift lock ecu Theft deterrent indicator light To j/b 3 (diagram 2 of 5) To j/b 5 (cavity b10) (diagram 3 of 5) Traction cut switch Washer level warning switch Ground Distribution Wiring Diagram (3 of 5) for Lexus RX 300 2002 List of elements for Ground Distribution Wiring Diagram (3 of 5) for Lexus RX 300 2002: 43 (behind upper left end of dash) A38 A39 A40 Abs & ba & trac & vsc ecu Acc relay B10 B11 B11 (body harness, in passenger's door) Blower motor control relay Brake fluid level switch Center air bag sensor assembly Combination switch D14 Data link connector (dlc) 3 F15 From j/b 3 (cavity g9) (diagram 2 of 5) Front passenger door ecu Front wiper & washer switch (part of combination switch) Front wiper motor Gnd Gnd1 Gnd2 Gnd3 Gnd4 Harness, center of dash) i6 Headlight beam level control ecu Heater relay I12 (dash harness, right side of dash) If (top center of dash) Instrument panel j/b (behind left side of dash) Junction connector j/b 5 (behind upper left side of dash) Junction connector j/c 7 Junction connector j/c 9 (behind right kick panel) Key interlock solenoid L10 Right remote control mirror heater Steering angle sensor To j/c 5 (cavity a) (diagram 4 of 5) Transponder key amplifier Turn signal flasher Turn signal switch (part of combination switch) Unlock warning switch Ground Distribution Wiring Diagram (4 of 5) for Lexus RX 300 2002 List of elements for Ground Distribution Wiring Diagram (4 of 5) for Lexus RX 300 2002: 58 (body harness, at headliner) b5 (dash harness, left side of dash) i3 (on left side of engine compartment) engine room j/b (under right center pillar) bk A/f heater relay Auto antenna motor & relay B2 (body harness, in driver's door) B4 (body harness, at headliner) B5 (body harness, at headliner) B6 (body harness, at headliner) B9 (body harness, in right rear door) Body ecu Coil Contact Cruise control actuator Cruise control ecu Cruise control switch (part of combination switch) D17 Driver door ecu Ecc Efi relay From ground g206 (diagram 3 of 5) From j/c 2 (cavity a) (diagram 1 of 5) Front passenger's power seat control switch Front passenger's seat heater Front window defogger Gnd Gnd1 Heater element I6 (dash harness, center of dash) Inner mirror & compass Junction connector j/c 15 (under right rear seat) Junction connector j/c 18 (under passenger's seat) Junction connector j/c 5 (behind upper left side of dash) Left remote control mirror Left vanity light & garage door opener Moon roof control ecu Moon roof control switch Personal light R/b 2 R13 Right buckle switch Right rear combination light Right rear door ecu Right rear side marker light Right rear turn signal light Right stop light Right taillight Right vanity light Rr def relay S14 Sel1 Starter relay Stereo component amplifier T15 Telephone ecu W/moon roof W/o moon roof Ground Distribution Wiring Diagram (5 of 5) for Lexus RX 300 2002 List of elements for Ground Distribution Wiring Diagram (5 of 5) for Lexus RX 300 2002: 51 Back door courtesy switch Back door key & unlock switch Back door unlock detection switch & back door lock motor Bi (upper left side of rear axle housing) Bj (under left center pillar) Bl (left rear quarter panel) Driver's seat heater Driver's seat power seat control switch Front power outlet Front vertical position control sensor Fuel pump & (fuel sender main) Gnd High mounted stoplight Junction connector j/c 12 (in left side of luggage compt) Junction connector j/c 14 (in left side of liftgate) Junction connector j/c 16 (under driver's seat) Junction connector j/c 17 (under driver's seat) Left back-up light Left buckle switch Left failure sensor Left rear combination light Left rear door ecu Left rear side marker light Left rear turn signal light Left stop light Left stop- light Left taillight License plate light Navigation ecu P18 P19 Power seat control switch (driver's seat lumbar support control) Power seat control switch (passenger's seat) Power seat ecu R11 Rear power outlet Rear vertical position control sensor Rear window defogger Rear wiper motor Reclining position control sensor Right back-up light Right rear combination light Right stop light Right taillight Sgnd Slide position control sensor Trailer converter Trailer socket W/driving position memory W/o driving position memory Wireless door lock ecu
HEADLIGHTS Headlamps Wiring Diagram (1 of 2) for Lexus RX 300 2002 List of elements for Headlamps Wiring Diagram (1 of 2) for Lexus RX 300 2002: 68 (4 or 5) (dash harness, left side of dash) i5 (top center of dash) if Auto Automatic light control sensor (behind upper left side of dash) Bdr Becu Body ecu (behind left side of dash) C14 Cltb Clte Clts Combination meter ecu Combination switch Cpub Cty Ctye D17 Dimmer switch Dome fuse 10a Driver door ecu (in left front door) Drl Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) Ffgo Ffog Fl door fuse 20a Flash Foglight switch G10 Gnd H-lp l lwr fuse 15a H-lp r lwr fuse 15a Head Headlamp relay High Hot at all times Hrly I16 (w/o nav) I18 (w/ nav) Instrument control panel Instrument panel j/b (behind left side of dash) J/b 5 (behind upper left side of dash) J/c 1 (in engine compartment, on right front fender) J/c 2 (in left front of engine compartment, behind headlight) J/c 5 (top of left kick panel) J/c 7 (upper left end of dash) J/c 9 (behind right kick panel) Ksw Left front door courtesy switch Left low beam headlight Light control switch Low Main fuse 50a Mpx+ Mpx- Mpx1 Mpx2 Off Pkb Pnk Red Red w/o hid Right low beam headlight Tail Trly Unlock warning switch W/ hid Headlamps Wiring Diagram (2 of 2) for Lexus RX 300 2002 List of elements for Headlamps Wiring Diagram (2 of 2) for Lexus RX 300 2002: 48 (engine harness, left side of engine) e7 (engine harness, left side of engine) e8 (engine harness, near battery) e9 A10 C14 C20 Canadian models Combination meter ecu Daytime running light resistor (on left front of engine compartment) Drl 2 relay Drl 3 relay Drl 4 relay Drl fuse 7.5a E14 (eng harn, near right rear fender) Engine room j/b (on left side of engine compartment) Fog- light relay Fr fog fuse 15a Gauge fuse 7.5a H-lp l upr fuse 15a H-lp r upr fuse 15a Head (usa) indicator High beam indicator Hot at all times Hot in on or start Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 1 (in engine compartment, on right front fender) J/c 2 (in left front of engine compartment behind headlight) J/c 4 (left kick panel) K10 Left front fog- light Left headlight ecu (behind left headlight) (w/ hid) Left high beam headlight (w/o hid) Parking brake switch R/b 2 R/b 3 (on front center of engine compartment, on radiator support) Red Right front fog- light Right headlight ecu (behind right headlight) (w/ hid) Right high beam headlight (w/o hid) Short connector (on left front of engine compartment) Solid state Tail fuse 10a Taillight relay Us models W/ hid W/o hid Headlamps Leveling Wiring Diagram for Lexus RX 300 2002 List of elements for Headlamps Leveling Wiring Diagram for Lexus RX 300 2002: 43 Anti-lock brakes system C13 C14 Chg- Combination meter Ecu-ig fuse 15a Engine room j/b (on left side of engine compt) G13 Generator Head lamp relay Headlight beam level cntrl warning light Headlight beam level control ecu (behind left end of dash) Heater fuse 15a Height control sensor (under rear of vehicle) Hot at all times Hot in on or start I12 Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 4 (behind left kick panel) J/c 9 (behind right kick panel) K13 Left headlight beam level control actuator Lh+ Lh- Lhe Lhg Lht Main fuse 50a Pnk Red Rh+ Rh- Rhe Rhg Rht Right headlight beam level control actuator Sbr Sgr Shr2 Spdl Spdn Wng
HORN Horn Wiring Diagram for Lexus RX 300 2002 List of elements for Horn Wiring Diagram for Lexus RX 300 2002: 12 (on left side of engine compartment) Body ecu (behind left side of dash) Combination switch Engine room j/b Horn Horn fuse 10a Horn relay Horn switch Hot at all times I4 (dash harn, left side of dash) Left horn Right horn
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Lexus RX 300 2002 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Lexus RX 300 2002: 84 (right dash brace) ih A/t oil temp indicator A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 Anti-lock brakes system B10 B11 B12 B13 B14 B15 B16 Brake indicator C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 Combination meter ecu Cruise control ecu (behind left side of dash) Cruise control, engine control, navigation systems D indicator Data link connector (dlc) 3 (partial) (under left side of dash) Driver door ecu (in left front door) E10 Ect snow indicator Engine control module (behind right side of dash) Engine controls system Exterior lights system Fuel gauge Fuel indicator Fuel sender (main) (on top of fuel tank) Fuel sender (sub) (under center of vehicle) Headlights system Heater fuse 15a Hot in on or start I9 (dash harness, left side of dash) Indicator Instrument control panel Instrument panel j/b (behind left side of dash) Interior lights system J/b 3 (behind upper center of dash) K13 L indicator Left turn indicator Light failure sensor (in left side of luggage compartment) Mpx- Mpx1 N indicator Odlp Odns Oil indicator P indicator Pnk R indicator Rear lights indicator Red Right turn indicator Seat belt indicator Solid state Speedometer Tachometer To combination meter ecu (diagram 2 of 2) W/o navi w/ navi Water temp gauge Instrument Cluster Wiring Diagram (2 of 2) for Lexus RX 300 2002 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus RX 300 2002: 57 A15 A16 A17 A18 A19 A20 A21 A22 Abs indicator Auto leveling indicator B10 B14 Brake indicator Buzzer C10 C12 C14 C15 C17 C18 C19 C20 C21 Charge indicator Combination meter ecu Cruise indicator Dome fuse 10a Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) From combination meter ecu (diagram 1 of 2) G10 H-lp r lwr fuse 15a Head indicator High beam indicator Hot at all times Hot w/combination switch in head position & dimmer switch in high or flash Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 1 (in engine compartment, on right front fender) J/c 4 (left kick panel) Malfunction indicator lamp O/d main switch O/d off indicator Odo/trip Open door indicator Red Rheostat Slip indicator Solid state Srs indicator Tail cancel Tail indicator Trac off indicator Vsc indicator (2wd) Washer Washer level warning switch (in right front corner of engine compartment)
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Lexus RX 300 2002 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Lexus RX 300 2002: 67 (left rear quarter panel) (w/ nav) (w/o nav) A10 Bcty Bdr Becu Bj (under left center pillar) Body ecu (behind left side of dash) Bsub C14 Code Combination meter ecu Cpub Cty Ctyb Ctye Cyl D rr door fuse 20a D12 D17 Driver door ecu (in left front door) Engine control module (behind right side of dash) F11 F13 F15 Front passenger door ecu (in right front door) Gauge fuse 7.5a Gnd Gnd1 Gnd2 Hot at all times Hot in on or start I16 I18 I5 (dash harness, left side of dash) Ih (right dash brace) Ile Instrument control panel Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 3, j/c 4 (left kick panel) J/c 5 (top of left kick panel) J/c 9 (right end of dash) K10 Left front door courtesy light Left front door courtesy switch Left rear door courtesy switch Left rear door ecu (in left rear door) Mpx+ Mpx- Mpx1 Mpx2 Open door indicator P fr door fuse 20a P rr door fuse 20a R11 Rco Rda Red Right front door courtesy light Right front door courtesy switch Rssi Sig Solid state Vcc Wireless door lock ecu (in center of vehicle) Courtesy Lamps Wiring Diagram (2 of 2) for Lexus RX 300 2002 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Lexus RX 300 2002: 42 (body harness at headliner) b6 (body harness, at headliner) b3 B3 (body harness, at headliner) B4 (w/o moon roof) b5 (w/moon roof) (body harness at headliner) B6 (body harness, at headliner) B9 (body harness, in right rear door) Back door courtesy switch Bdr Bk (under right center pillar) Cpub Cty Ctye Dome fuse 10a Door Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) Fl door fuse 20a Front interior light G10 Garage door opener (if equipped) Gnd Hot at all times Ignition key cylinder light Instrument panel j/b (behind left side of dash) J/b 5 (behind upper left side of dash) J/c 14 (in left side of liftgate) J/c 3, j/c 4 (left kick panel) J/c 5 (top of left kick panel) Left vanity light Mpx1 Mpx2 Off Personal light R13 Rear interior light Rear interior light diode (in rear center of roof) Red Right rear door courtesy switch Right rear door ecu (in right rear door) Right vanity light Sel1 Sig Instrument Illumination Wiring Diagram for Lexus RX 300 2002 List of elements for Instrument Illumination Wiring Diagram for Lexus RX 300 2002: 38 (w/ nav) (w/o nav) A12 Ashtray illumination Body ecu (behind left side of dash) C13 C14 Cigarette lighter illumination Combination meter ecu E10 Electronic controlled transmission pattern select switch Glove box light H10 Hazard switch Head Hot at all times I16 I18 Ih (right dash brace) Ill+ Ill- Instrument control panel Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 9 (behind right kick panel) Light control switch (part of combination switch) O/d main switch Off Panel fuse 7.5a Radio & player (w/ nav) Rheostat Seat heater switch (driver) Seat heater switch (passenger) Tail Tail cancel Taillight relay Traction cut switch Trly
MEMORY SYSTEMS Memory Seat Wiring Diagram (1 of 2) for Lexus RX 300 2002 List of elements for Memory Seat Wiring Diagram (1 of 2) for Lexus RX 300 2002: 66 (right dash brace) ih Computer data lines system D13 Dome fuse 10a Ecu-ig fuse 15a Engine room j/b (on left side of engine compartment) Fdwn Front Front passenger's seat power seat control switch Frv+ Frv- Fup G11 Gnd Hot at all times Hot in on or start Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 15 (under right rear seat) J/c 17 (under driver's seat) J/c 18 (under passenger's seat) J/c 3 J/c 4 Junction connector (left kick panel) Ldwn Lft+ Lft- Lup Mmry Mpx1 N0. 1 N0. 2 P18 P19 Pnk Power fuse 30a Power seat ecu (under driver's seat) Power seat motor (driver's seat front vertical control) Power seat motor (driver's seat rear vertical control) Power seat motor (driver's seat reclining control) Power seat motor (driver's seat slide control) Power seat motor (front passenger's seat reclining control) Power seat motor (front passenger's seat slide control) Pvcc Rcl+ Rcl- Rclf Rclr Rear Reclining Red Seat memory switch Set Sgnd Sld+ Sld- Sldf Sldr Slide Ssfv Ssrl Ssrr Ssrs Sw1 Sw2 Sysb Memory Seat Wiring Diagram (2 of 2) for Lexus RX 300 2002 List of elements for Memory Seat Wiring Diagram (2 of 2) for Lexus RX 300 2002: 19 (under left center pillar) bj (upper left side of rear axle housing) bi Down Driver's seat power seat control switch Front Front vertical Front vertical position control sensor J/c 12 (in left side of luggage compt) J/c 16 (under driver's seat) J/c 17 (under driver's seat) Power seat control switch (driver's seat lumbar support control) Power seat motor (driver's seat lumbar support control) Rear Rear vertical Rear vertical position control sensor Reclining Reclining position control sensor Slide Slide position control sensor
NAVIGATION Navigation Wiring Diagram for Lexus RX 300 2002 List of elements for Navigation Wiring Diagram for Lexus RX 300 2002: 61 +b1 A10 A11 A12 A13 A14 A15 A16 A17 A18 Acc B10 Bi (upper left side of rear axle housing) Braided C14 C18 Combination meter Computer data lines system (data link connector) Cruise control ecu (behind left side of dash) Dome fuse 10a Engine control module (behind right side of dash) Engine room j/b (left side of engine compt) Exterior lights system (back-up light switch) F13 Gauge fuse 10a Gnd1 Hot at all times Hot in acc or run Hot in start or run Hot w/taillight relay energized I18 Ih (right dash brace) Instrument control panel Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 12 (left side of luggage compt) J/c 3 & j/c 4 (behind left kick panel) J/c 3 & j/c 4 (benind left kick panel) J/c3 J/c4 J/c4 c K12 Multi-display Navigation ecu (at right rear corner of cargo area) Panel fuse 7.5a Parking brake switch Pkb Pnk Radio 2 fuse 7.5a Red Sound systems Spd Sync Tail Tx+ Tx- Tx1+ Tx1- Tx3+ Tx3-
PASSIVE RESTRAINTS Passive Restraint Wiring Diagram for Lexus RX 300 2002 List of elements for Passive Restraint Wiring Diagram for Lexus RX 300 2002: 12 Bj (under left center pillar) Gauge fuse 7.5a Hot in run or start Instrument panel j/b (behind left side of dash) J/c 15 (under right rear seat) J/c 17 (under driver's seat) J/c 18 (under passenger's seat) J/c 3, j/c 4 (behind left kick panel) Left buckle switch (in buckle) Left tension reducer solenoid (at base of left "b" pillar) Right buckle switch (in buckle) Right tension reducer solenoid (at base of right "b" pillar)
POWER ANTENNA Power Antenna Wiring Diagram for Lexus RX 300 2002 List of elements for Power Antenna Wiring Diagram for Lexus RX 300 2002: 23 (behind left side of dash) (body harn, under right rear seat) b7 (left side of engine compt) (w/navigation) (w/o navigation) A13 Acc Ant Auto antenna motor & relay Ecu-ig fuse 15a Engine room j/b Hot at all times Hot in acc or on Hot in on or start Instrument panel j/b (behind left side of dash) Instrument panel j/b J/b 3 (behind left kick panel) J/c 15 (under right rear seat) R28 Radio & player Radio 1 fuse 25a Radio 2 fuse 7.5a Stereo component amplifier (under rear seat)
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Lexus RX 300 2002 List of elements for Power Distribution Wiring Diagram (1 of 4) for Lexus RX 300 2002: 52 (exterior lights system) Abs fuse 60a Air conditioning system Air conditioning system & cooling fans system Alt fuse 140a Am1 fuse 40a Anti-lock brakes system Anti-lock brakes system, body computer system, cruise control system, engine controls system, exterior lights system, shift interlock system & transmissions system Anti-theft system, body computer system, door locks system, interior lights system & power windows system Battery Cds fuse 40a Coil Computer data lines system Contact D rr door fuse 20a D12 D13 Defogger system E10 Engine room j/b (on left side of engine compartment) Exterior lights system Foglight relay Fr def fuse 20a Fr fog fuse 15a From s/roof fuse a (diagram 1 of 4) Fusible link block G11 Generator Heater fuse 50a Instrument panel j/b (behind left side of dash) Interior lights system & navigation system Obd fuse 7.5a P fr door fuse 20a P rr door fuse 20a Panel fuse 7.5a Power fuse 30a Power tops system Rdi fuse 40a Rr def fuse 30a S/roof fuse 20a Seat htr fuse 15a Seats system Seats system & memory system Starter Stop fuse 20a Tail fuse 10a Taillight relay To engine room j/b (r/b 2, a/f htr fuse, 25a) (diagram 2 of 4) To engine room j/b cavity i1 (diagram 2 of 4) To ignition switch (cavity 2) (diagram 3 of 4) To power fuse (diagram 1 of 4) To pwr outlet fuse (diagram 4 of 4) Power Distribution Wiring Diagram (2 of 4) for Lexus RX 300 2002 List of elements for Power Distribution Wiring Diagram (2 of 4) for Lexus RX 300 2002: 50 (4 or 5) (engine harness, red near battery) e9 (headlights system) A/f htr fuse 25a Air conditioning system, anti-theft system, body computer system, door locks system, headlights system, instrument cluster system, interior lights system, power windows system & warning systems Air conditioning system, garage door opener, instrument cluster system, interior lights system, memory systems, navigation system, body computer system, power tops system & sound systems Alt-s fuse 7.5a Am2 fuse 20a Anti-theft system, body computer system, door locks system, headlights system, interior lights system, power windows system & warning system Cellular phones system Coil Contact Dome fuse 10a Drl 2 relay Drl fuse 7.5a Ecu-b fuse 7.5a Efi fuse 20a Efi relay Engine controls system Engine room j/b (on left side of engine compartment) Exterior lights system Fl door fuse 20a From fusible link block (cavity 1) (diagram 1 of 4) From fusible link block (cavity 3) (diagram 1 of 4) From main fuse f (diagram 2 of 4) G12 H-lp l lwr fuse 15a H-lp l upr fuse 15a H-lp r lwr fuse 15a H-lp r upr fuse 15a Hazard fuse 15a Headlamp relay Headlights system Headlights system & instrument cluster system Horn fuse 10a Horn relay Instrument panel j/b (behind left side of dash) Main fuse 50a Power antenna system & sound systems R/b 2 R/b 3 (on front center of engine compartment, on radiator support) Rad 1 fuse 25a Red Short pin Starter relay Starting/ charging system Tel fuse 15a To ignition switch (cavity 7) (diagram 3 of 4) To short pin (diagram 2 of 4) Towing fuse 20a Power Distribution Wiring Diagram (3 of 4) for Lexus RX 300 2002 List of elements for Power Distribution Wiring Diagram (3 of 4) for Lexus RX 300 2002: 51 Acc Air conditioning system, anti-theft system, body computer system, door locks system, headlights system, interior lights system, power windows system & warning systems Air conditioning system, cooling fans system & defogger system Air conditioning, anti-lock brake, body computer, cruise control, engine control, exterior light, headlight, instrument cluster, starting/charging, srs, transmission & warning systems Am1 Am2 Anti-lock brakes system Body computer system & wiper/washer system Cellular phones system & power antenna system Cruise control system, exterior lights system, navigation system & transmissions system Cruise control system, headlights system, memory system, mirrors system & power windows system D10 Door locks system, anti-theft system, body computer system, interior lights system & power windows system Door locks system, anti-theft system, body computer system, interior lights system, power windows system & warning systems Door locks system, exterior lights system, interior lights system, anti-theft system, body computer system, passive restraints system & power windows system Door locks system, interior lights system, anti-theft system, body computer system, passive restraints system & power windows system Ecu-ig fuse 15a Engine controls system Engine controls system & starting/charging system Engine controls system & transmissions system Exterior lights system From instrument panel j/b (am1 fuse, 40a) (cavity c6) (diagram 1 of 4) From instrument panel j/b (cavity c3) (diagram 2 of 4) From wiper fuse h (diagram 3 of 4) G13 Gauge fuse 7.5a Heater fuse 15a Ig1 Ig2 Ign fuse 7.5a Ignition switch Instrument panel j/b (behind left side of dash) K10 K13 Lock Navigation system Pnk Red Rr wip fuse 15a Seats system Shift interlock system Srs-ig fuse 15a St2 Start Starter fuse 7.5a Starting/ charging system To gauge fuse (diagram 3 of 4) To instrument panel j/b (cavity c2) (diagram 4 of 4) Washer fuse 20a Wiper fuse 25a Wiper/washer system Power Distribution Wiring Diagram (4 of 4) for Lexus RX 300 2002 List of elements for Power Distribution Wiring Diagram (4 of 4) for Lexus RX 300 2002: 23 (right instrument panel brace) ih (upper left side of rear axle housing) bi Acc relay Air conditioning system, navigation system, power antenna system & sound systems Body computer system & warning systems Cellular telephone system, navigation system, power antenna system & sound system Cig fuse 15a Cigarette lighter D14 From ignition switch (cavity 3) (diagram 3 of 4) From taillight relay (diagram 1 of 4) Front power outlet (rear of center console) Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 12 (in left side of luggage compartment) J/c 9 (right end of dash) Junction connector (left kick panel) Mirrors system Pnk Pwr outlet fuse 15a Radio 2 fuse 7.5a Rear power outlet (left rear side of cargo area) Shift interlock system
POWER DOOR LOCKS Power Door Lock Wiring Diagram (1 of 2) for Lexus RX 300 2002 List of elements for Power Door Lock Wiring Diagram (1 of 2) for Lexus RX 300 2002: 79 (dash harness, left side of dash) (right dash brace) ih (w/ navigation) b A (w/o navigation) A10 Back door courtesy switch Back door key lock & unlock switch Back door motor assembly (in liftgate) Back door unlock detection switch Bcty Bdr Bdsl Bdsu Becu Body ecu (behind left side of dash) Bsub Bzr Bzr2 C14 C17 C21 Combination meter ecu Cpub Cty Ctye D rr door fuse 20a D12 Door key lock & unlock switch Door lock control switch Door lock m Door lock motor Door unlock detection switch Driver door ecu (in left front door) Engine control module (behind right side of dash) F11 F13 G10 Gauge fuse 7.5a Gnd Gnd1 Gnd2 Hot at all times Hot in on or start I16 I18 I5 (dash harness, left side of dash) Instrument control panel Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 14 (in left side of liftgate) J/c 5 (behind upper left side of dash) Junction connector (left kick panel) K10 Ksw Kul Left front door courtesy switch Left front door lock assembly (in left front door) Lock Lsw Lswa Lswe Motor Mpx+ Mpx- Mpx1 Mpx2 P fr door fuse 20a P rr door fuse 20a Pnk Rco Rda Rdr+ Rdr- Rssi Sig Solid state Un- lock Unlock Wireless door lock buzzer (w/keyless entry) Power Door Lock Wiring Diagram (2 of 2) for Lexus RX 300 2002 List of elements for Power Door Lock Wiring Diagram (2 of 2) for Lexus RX 300 2002: 45 (left rear quarter panel) bl (top center of dash) if (under left center pillar) bj (under right center pillar) bk B9 (body harness, in right rear door) Bdr Code Cpub Cty Ctye Door key lock & unlock switch Door lock control switch Door lock motor Door unlock detection switch Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) Fl door fuse 20a Front passenger door ecu (in right front door) Gnd Hot at all times J/c 7 (upper left end of dash) J/c 9 (behind right kick panel) Kul Left rear door courtesy switch Left rear door ecu (in left rear door) Left rear door lock assembly (in left rear door) Left rear door unlock detection switch Lock Lsw Lswe Mpx1 Mpx2 Pnk Right front door courtesy switch Right front door lock assembly (in right front door) Right rear door courtesy switch Right rear door ecu (in right rear door) Right rear door lock assembly (in right rear door) Right rear door unlock detection switch Sel1 Sig Unlock Unlock warning switch Vcc Wireless door lock ecu (w/keyless entry) (in center of vehicle)
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Lexus RX 300 2002 List of elements for Electrochromic Mirror Wiring Diagram for Lexus RX 300 2002: 13 (behind left side of dash) (dash harn, left kick panel) Ec+ Ec- Ecu-ig fuse 15a Gnd Hot in on or start Inner mirror & compass Instrument panel j/b J/c 4 (behind left kick panel) J/c 5 (upper left side of dash) Left remote control mirror Right remote control mirror Power Mirrors Wiring Diagram for Lexus RX 300 2002 List of elements for Power Mirrors Wiring Diagram for Lexus RX 300 2002: 16 Cig fuse 15a Down Hot in acc or on I2 (dash harn, left side of dash) Ih (right dash brace) Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) K4 pnk Left Left remote control mirror Operation switch Pnk Remote control mirror switch Right Right remote control mirror Select switch
POWER SEATS Heated Seats Wiring Diagram for Lexus RX 300 2002 List of elements for Heated Seats Wiring Diagram for Lexus RX 300 2002: 22 B11 Bj (under left center pillar) Driver's seat heater Driver's seat heater switch Gauge fuse 7.5a Hot at all times Hot in on or start I6 (dash harn, top center of dash) If (top center of dash) Ih (right dash brace) Instrument panel j/b (behind left side of dash) Interior lights system J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 15 (under right rear seat) J/c 17 (under driver's seat) J/c 18 (under passenger's seat) Passenger's seat heater Passenger's seat heater switch Red Seat heater relay (behind right side of dash, near ecm) Seat htr fuse 15a Power Seats Wiring Diagram for Lexus RX 300 2002 List of elements for Power Seats Wiring Diagram for Lexus RX 300 2002: 26 Bj (under left center pillar) D13 Down Driver's seat power seat control switch Front Front passenger's power seat control switch Front vertical G11 Hot at all times Instrument panel j/b (behind left side of dash) J/c 15 (under right rear seat) J/c 17 (under driver's seat) J/c 18 (under passenger's seat) Power fuse 30a Power seat control switch (driver's seat lumbar support control) Power seat motor (driver's seat front vertical control) Power seat motor (driver's seat lumbar support control) Power seat motor (driver's seat rear vertical control) Power seat motor (driver's seat reclining control) Power seat motor (driver's seat slide control) Power seat motor (front passenger's seat reclining control) Power seat motor (front passenger's seat slide control) Rear Rear vertical Reclining Slide
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagrams for Lexus RX 300 2002 List of elements for Power Top/Sunroof Wiring Diagrams for Lexus RX 300 2002: 20 B5 (body harness, at headliner) Body ecu (behind left side of dash) Dome fuse 10a Ecu-ig fuse 15a Engine room j/b (left side of engine compartment) G13 Hot at all times Hot in on or start Instrument panel j/b (behind left side of dash) J/b 5 (upper left side of dash) J/c 4 (left kick panel) J/c 5 (behind left side of dash) Moon roof control ecu (on front center of moon roof) Moon roof control switch Mpx1 Pnk Red S/roof fuse 20a Slide close/ tilt up Slide open/ tilt down
POWER WINDOWS Power Window Wiring Diagram (1 of 3) for Lexus RX 300 2002 List of elements for Power Window Wiring Diagram (1 of 3) for Lexus RX 300 2002: 71 (left rear quarter panel) A10 Auto Bdr Becu Body ecu (behind left side of dash) Bsub C14 C17 C21 Code Combination meter ecu Cpub Cty Ctye D rr door fuse 20a D12 Down Driver door ecu (in left front door) F11 F13 G10 Gauge fuse 7.5a Gnd Gnd1 Gnd2 Hot at all times Hot in on or start I16 I18 I5 (dash harness, left side of dash) Ih (right dash brace) Instrument control panel Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/c 3, j/c 4 (left kick panel) J/c 5 (behind upper left side of dash) K10 Ksw Kul Left front door courtesy switch Left front door key lock & unlock switch Left front power window motor Left rear switch Limit switch Lmt Lock Lswe Mpx+ Mpx- Mpx1 Mpx2 P fr door fuse 20a P rr door fuse 20a Pls Pnk Pulse sensor Rco Rda Red Right front switch Right rear switch Rssi Sgnd Sig Unlock Vcc W/ navigation w/o navigation W/l2 Window lock switch Wireless door lock ecu (w/keyless entry) (in center of vehicle) Power Window Wiring Diagram (2 of 3) for Lexus RX 300 2002 List of elements for Power Window Wiring Diagram (2 of 3) for Lexus RX 300 2002: 41 Auto Bdr Bj (under left center pillar) Cpub Cty Ctye Down Ecu-b fuse 7.5a Engine control module (behind right side of dash) Engine room j/b (on left side of engine compartment) Fl door fuse 20a Front passenger door ecu (in right front door) Gnd Hot at all times If (top center of dash) J/b 5 (behind upper left side of dash) J/c 7 (upper left side of dash) J/c 9 (behind right kick panel) Left rear door ecu (in left rear door) Left rear power window motor Limit switch Lmt Mdn Mpx1 Mpx2 Mup Pct Pcti Pcto Pls Power window control switch Pulse sensor Pwe R11 R12 Red Right front door courtesy switch Right front power window motor Sgnd Sig Unlock warning switch Power Window Wiring Diagram (3 of 3) for Lexus RX 300 2002 List of elements for Power Window Wiring Diagram (3 of 3) for Lexus RX 300 2002: 33 (body harness, in right rear door) (under right center pillar) bk Auto Auto down Auto up Bdr Cpub Cty Ctye Gnd Left rear door courtesy switch Left rear power window control switch Lmt Manual down Manual up Mdn Mpx1 Mpx2 Mup Pcti Pcto Pls Pwe R13 R14 Red Right rear door courtesy switch Right rear door ecu (in right rear door) Right rear power window control switch Right rear power window motor Sel1 Sgnd Sig
RADIO Radio Wiring Diagrams, with Navigation for Lexus RX 300 2002 List of elements for Radio Wiring Diagrams, with Navigation for Lexus RX 300 2002: 75 A13 Acc Ant Automatic cd changer Cdl+ Cdl- Cdr+ Cdr- D11 Dome fuse 10a Eject Emut Engine room j/b (on left side of engine compt) Fl+ Fl- Fr+ Fr- Gnd Hot at all times Hot in acc or on I18 Ih (right dash brace) Instrument control panel Instrument panel j/b Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 15 (under right rear seat) J/c 4 (behind left kick panel) Left front door speaker Left rear door speaker Left tweeter Multi display Mute Navaigation ecu (on right rear of cargo area) Nca Pnk Power antenna system R28 R29 Rad 1 fuse 25a Rad 2 fuse 7.5a Radio & player Red Red c Right front door speaker Right rear door speaker Right tweeter Rl+ Rl- Rr+ Rr- S14 S15 S16 Sgd2 Sgnd Sgrd Stereo component amplifier (under rear seat) T15 T16 T18 Telephone ecu (on right rear of cargo area) Tmut Tx+ Tx- Tx1+ Tx1- Tx3+ Tx3- Wf+ Wf- Wfr+ Wfr- Woofer speaker Radio Wiring Diagrams, without Navigation for Lexus RX 300 2002 List of elements for Radio Wiring Diagrams, without Navigation for Lexus RX 300 2002: 70 A13 Acc Ant Automatic cd changer Cdl+ Cdl- Cdr+ Cdr- D11 Dome fuse 10a Eject Emut Engine room j/b (on left side of engine compt) Fl+ Fl- Fr+ Fr- Gnd Hot at all times Hot in acc or on I16 Ih (right dash brace) Instrument control panel Instrument panel j/b Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 15 (under right rear seat) J/c 4 (behind left kick panel) Left front door speaker Left rear door speaker Left tweeter Multi display Mute Nca Pnk Power antenna system Rad 1 fuse 25a Rad 2 fuse 7.5a Radio & player Red Red c Right front door speaker Right rear door speaker Right tweeter Rl+ Rl- Rr+ Rr- S14 S15 S16 Sgd2 Sgnd Sgrd Stereo component amplifier (under rear seat) T15 T16 T18 Telephone ecu (on right rear of cargo area) Tmut Tx+ Tx- Tx1+ Tx1- Wf+ Wf- Wfr+ Wfr- Woofer speaker
SHIFT INTERLOCKS Shift Interlock Wiring Diagram for Lexus RX 300 2002 List of elements for Shift Interlock Wiring Diagram for Lexus RX 300 2002: 27 (right dash brace) 15a 20a Acc Cig fuse E11 Ecu-ig fuse Hot at all times Hot in acc or on Hot in on or start If (top center of dash) Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 7 (behind upper left side of dash) Key interlock solenoid Kls+ Nca Pnk Shift lock control switch Shift lock ecu (under center console, beside shift lever) Shift lock solenoid Sls+ Sls- Stop fuse Stoplight switch Stp
STARTING/CHARGING Charging Wiring Diagram for Lexus RX 300 2002 List of elements for Charging Wiring Diagram for Lexus RX 300 2002: 28 Alt fuse 140a Alt-s fuse 7.5a Battery Body ecu (behind left side of dash) C14 Charge indicator Combination meter ecu Ecu-ig fuse 15a Engine control module (behind right side of dash) Engine room j/b (on left side of engine compartment) Fusible link block (in engine room j/b) Generator Heater fuse 15a Hot at all times Hot in on or start I16 I18 Instrument control panel Instrument panel j/b (behind left side of dash) J/b no. 3 (behind upper center of dash) K13 Mpx+ Mpx- Mpx1 Mpx2 Solid state W/navigation W/o navigation Starting Wiring Diagram for Lexus RX 300 2002 List of elements for Starting Wiring Diagram for Lexus RX 300 2002: 20 Acc Am2 Am2 fuse 20a Battery Engine control module (behind right side of dash) Engine room j/b (on left side of engine compartment) Fusible link block (in engine room j/b) G12 Ignition switch Instrument panel j/b (behind left side of dash) J/c 5 (behind upper left side of dash) Lock Main fuse 50a Park/neutral position switch (on transaxle) St2 Sta Start Starter Starter fuse 7.5a Starter relay
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Lexus RX 300 2002 List of elements for Supplemental Restraint Wiring Diagram for Lexus RX 300 2002: 71 (at base of left "b" pillar) left side air bag sensor (top center of dash) if (under left center pillar) bj +sl +sr -sl -sr A10 Air bag squib (front passenger's air bag assembly) Air bag squib (steering wheel pad) Body ecu (behind left side of dash) C14 Center air bag sensor assembly (under center of dash, forward of center console) Combination meter D14 Data link connector (dlc) 3 (partial) (under left E11 E12 Engine control module (behind right side of dash) Esl Esr F/ps Fsl Fsr Gsw2 Heater fuse 15a Hot in on or start Ig1 Ig2 Ign fuse 7.5a Instrument panel j/b (behind left side of dash) J/b 5 (behind upper left side of dash) J/c 15 (under right rear seat) J/c 17 (under driver's seat) J/c 18 (under passenger's seat) J/c 7 (behind upper left side of dash) J/c 9 (behind right kick panel) K13 L10 Lbe+ Left buckle switch (on left seat belt buckle) Left front air bag sensor (in left front corner of engine compartment) Left pretensioner Left side air bag squib Obd2 Pl+ Pl- Pnk Pr+ Pr- Rbe+ Right buckle switch (on right seat belt buckle) Right front air bag sensor (in right front corner of engine compartment) Right pretensioner Right side air bag sensor (at base of right "b" pillar) Right side air bag squib Sfl+ Sfl- Sfr+ Sfr- Short connector (on left front of engine compart- ment) Side of dash) Sil Solid state Spiral cable Srs warning indicator Srs-ig fuse 15a Ssl+ Ssr+ Vupl Vupr
TRANSMISSION A/T Wiring Diagram for Lexus RX 300 2002 List of elements for A/T Wiring Diagram for Lexus RX 300 2002: 77 (dash harn, right side of dash) (engine harn, rear of engine) A/t indicator switch (part of park/neutral position switch) (on transaxle) Anti-lock brake system Batt Body ecu (behind left side of dash) C41 Computer data lines system Counter gear speed sensor (on front side of engine) Cruise control ecu (behind left side of dash) Data link connector 3 (under left side of dash) Dsl E04 E05 E11 Eb (right of surge tank) Ec (rear of surge tank) Efi fuse 20a Efi relay Electro- nically controlled transmission pattern select switch Electronically controlled transmission solenoid (in transaxle) Engine control module (behind right side of dash) Engine coolant Engine room j/b (left side of engine compt) Eo1 Eo2 Eo3 Gauge fuse 7.5a Hot at all times Hot in on or start Hot in start I11 Idlo Ign fuse 7.5a Igsw Ih (right dash brace) Instrument cluster system (o/d off ind) Instrument cluster system (speedometer) Instrument panel j/b (behind left side of dash) J/b 3 (behind upper center of dash) J/b 5 (behind upper left side of dash) J/c 10 (behind right side of dash) J/c 2 (left front of engine compt, behind headlight) J/c 4 (behind left kick panel) J/c 8 (right side of dash) Mpx1 Mpx2 Mrel Nc+ Nc- Normal Nt+ Nt- O/d main switch (below center console) Od1 Odlp Odms Red Sl1+ Sl1- Sl2+ Sl2- Slt+ Slt- Snow Spd Starter fuse 7.5a Starting/ charging Stop fuse 20a Stoplight switch (on brake pedal bracket) Stp Temperature sensor (top front of engine) Tho Throttle position sensor (on throttle body) Thw Turbine speed sensor (on transaxle) Vta
WARNING SYSTEMS Warning System Wiring Diagrams for Lexus RX 300 2002 List of elements for Warning System Wiring Diagrams for Lexus RX 300 2002: 56 (dash harn, left side of dash) i5 A10 Acc Bdr Becu Bj (under left center pillar) Body ecu (behind left side of dash) Buzzer C14 Cpub Cty Ctye D17 D18 D20 Dbkl Driver door ecu (in left front door) Ecu-b fuse 7.5a Engine room j/b Fl door fuse 20a Front passenger's seat belt warning light G10 Gauge fuse 7.5a Gnd Heater fuse 15a Hot at all times Hot in acc or run Hot in run or start I16 I18 If (top center of dash) Instrument control panel Instrument panel j/b J/b 3 (behind upper center of dash) J/c 15 (left side of luggage compt) J/c 17 (under driver's seat) J/c 18 (under passenger's seat) J/c 5 (behind upper left side of dash) J/c 7 (upper left side of dash) K10 K13 Ksw Left buckle switch Left front door courtesy switch Mpx+ Mpx- Mpx1 Mpx2 Radio 2 fuse 7.5a Right buckle switch Seat belt indicator Seat belt warning occupant detection sensor Sig Unlock warning switch W/ navigation W/o navigation
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Lexus RX 300 2002 List of elements for Front Wiper/Washer Wiring Diagram for Lexus RX 300 2002: 19 Combination switch D14 Front washer switch Front wiper motor (left side of firewall) Front wiper switch High Hot in on or start If (center of dash) Instrument panel j/b (behind left side of dash) Int Int. time J/c 7 (behind left side of dash) J/c 9 (behind right kick panel) Low Off Solid state Washer fuse 20a Washer motor (bottom of washer fluid reservoir) Wiper fuse 25a Rear Wiper/Washer Wiring Diagram for Lexus RX 300 2002 List of elements for Rear Wiper/Washer Wiring Diagram for Lexus RX 300 2002: 30 (dash harn, center of dash) i6 Body ecu (behind left side of dash) Combination switch F11 F13 Gnd2 Hot in on or start If (top center of dash) Ih (right dash brace) Instrument panel j/b (behind left side of dash) Int J/b 3 (behind upper center of dash) J/c 14 (left side of liftgate) J/c 7 (left side of dash) Off Rear wiper & washer switch Rear wiper motor (center of liftgate) Red Rr wip fuse 15a Rwc1 Rwig Rwlm Rwls Rwsw Rww Washer 1 Washer 2 Washer fuse 20a Washer motor (bottom of windshield washer reservoir) Wig
