GROUND DISTRIBUTION – Lexus RX 300 2003 – SYSTEM WIRING DIAGRAMS

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 5) for Lexus RX 300 2003

List of elements for Ground Distribution Wiring Diagram (1 of 5) for Lexus RX 300 2003:

• (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 2003

List of elements for Ground Distribution Wiring Diagram (2 of 5) for Lexus RX 300 2003:

• 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 2003

List of elements for Ground Distribution Wiring Diagram (3 of 5) for Lexus RX 300 2003:

• (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 2003

List of elements for Ground Distribution Wiring Diagram (4 of 5) for Lexus RX 300 2003:

• (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 2003

List of elements for Ground Distribution Wiring Diagram (5 of 5) for Lexus RX 300 2003:

• 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