Lexus RX I (1997-2003) engine room j/b (on left side of engine compartment) Wiring diagrams

1 4 5 8 9 13 14 15 17 18 19 25 A- A- 4 5 8 9 13 14 15 17 18 19 20 25 BACK DOOR COURTESY SWITCH BLK WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE CTY SIG A+ BDR CPUB LSW CTYE LSWE CTY SIG A+ BDR CPUB LSW CTYE LSWE GND DOOR LOCKS SYSTEM ECU-B FUSE ENGINE HOOD COURTESY SWITCH (ON FRONT CENTER OF ENGINE COMPARTMENT) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) F/L DOOR FUSE GRN/BLK WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES 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 LT GRN WIRE LT GRN/BLK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR DOOR COURTESY SWITCH RIGHT REAR DOOR ECU (IN RIGHT REAR DOOR) THEFT DETERRENT HORN (IN RIGHT REAR CORNER OF ENGINE COMPARTMENT) UNLOCK WARNING SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL/RED WIRE

26 6 CF ACMG 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 (ON REFRIGERANT LINE, NEAR RECEIVER-DRIER) BLK WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE CDS FUSE ENGINE 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, ON LEFT SIDE OF ENGINE COMPARTMENT) HEATER FUSE 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 ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) J/C 2 (IN LEFT FRONT OF ENGINE COMPARTMENT, BEHIND HEADLIGHT) LT GRN/BLK WIRE R/B 2 (INSIDE ENGINE ROOM J/B) RADIATOR FAN MOTOR (IN LEFT FRONT OF ENGINE COMPARTMENT) RDI FUSE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE WATER TEMPERATURE SWITCH 1 (IN RIGHT FRONT OF ENGINE COMPARTMENT) WATER TEMPERATURE SWITCH 2 (ON TOP WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

BACK DOOR COURTESY SWITCH BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE CTY SIG BDR CPUB CTYE DOME FUSE DOOR ECU-B FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) F/L DOOR FUSE FRONT INTERIOR LIGHT GARAGE DOOR OPENER (IF EQUIPPED) GRN/BLK WIRE 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 OFF PERSONAL LIGHT REAR INTERIOR LIGHT REAR INTERIOR LIGHT DIODE (IN REAR CENTER OF ROOF) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR DOOR COURTESY SWITCH RIGHT REAR DOOR ECU (IN RIGHT REAR DOOR) RIGHT VANITY LIGHT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 HS- ST- T+ IL BI (UPPER LEFT SIDE OF REAR AXLE HOUSING) BLK WIRE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HAZARD FUSE HEATER FUSE HIGH MOUNTED STOP LIGHT HOT AT ALL TIMES HOT IN ON OR START 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) LEFT FRONT TURN SIGNAL LIGHT LEFT TURN SIGNAL LIGHT LIGHT FAILURE SENSOR (IN LEFT SIDE OF LUGGAGE COMPARTMENT) LT/S RT/S TL GND ORG/ WIRE REAR LIGHTS WARNING LIGHT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT TURN SIGNAL LIGHT RIGHT REAR COMBINATION LIGHT RIGHT REAR SIDE MARKER LIGHT RIGHT REAR TURN SIGNAL LIGHT RIGHT STOP LIGHT RIGHT STOP LIGHT RIGHT TAIL LIGHT RIGHT TURN SIGNAL LIGHT SOLID STATE ST+ IG T- STOP FUSE STOP LIGHT SWITCH TL LT RT GND TOWING FUSE TRAILER CONVERTER (FORWARD OF LEFT TAILLIGHT) TL L/S R/T TRAILER SOCKET (BELOW LEFT SIDE OF REAR BUMPER) WHT WIRE WHT/BLK WIRE YEL WIRE

A/C MAGNETIC CLUTCH, LOCK SENSOR A/C SINGLE PRESSURE SWITCH A/C DUAL PRESSURE SWITCH A/C TRIPLE PRESSURE SWITCH ABS, BA, TRAC, VSC ECU ACTUATOR BLK WIRE BRN WIRE CONTACT DATA LINK CONNECTOR (DLC) 3 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 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 J/C 1 (IN ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) J/C 10 (BEHIND RIGHT SIDE OF DASH) 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 ECU LEFT HEADLIGHT LOW BEAM 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 TO J/C 1 (DIAGRAM 2 OF 5) W/ HID W/O HID WATER TEMPERATURE SWITCH 1 WHT WIRE WHT/BLK WIRE

1 2 3 4 CLTB 2 12 14 15 16 BECU HRLY DRL HEAD TAIL 21 17 MPX+ MPX- 5 6 7 9 12 20 21 IG FFGO TRLY CLTE CLTB 8 19 20 KSW PKB HF AUTOMATIC LIGHT CONTROL SENSOR BDR CTY CPUB CTYE GND BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN/WHT WIRE CLTE CLTS CLTS COMBINATION METER ECU COMBINATION SWITCH DIMMER SWITCH DRIVER DOOR ECU (IN LEFT FRONT DOOR) ECU-B FUSE DOME FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) F/L DOOR FUSE FOGLIGHT SWITCH GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE H-LP L LWR FUSE H-LP R LWR FUSE HEADLAMP RELAY HIGH HIGH FLASH FLASH LOW LOW HIGH LOW FLASH HOT AT ALL TIMES HU FFOG 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) LEFT FRONT DOOR COURTESY SWITCH LEFT LOW BEAM HEADLIGHT LIGHT CONTROL SWITCH LT GRN WIRE LT GRN/RED WIRE MAIN FUSE MPX OFF PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT LOW BEAM HEADLIGHT TAIL HEAD OFF AUTO UNLOCK WARNING SWITCH W/ HID W/O HID W/O HID W/ HID WHT WIRE WHT/BLK WIRE YEL/BLK WIRE YEL/RED WIRE

BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE 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 ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FOG LIGHT RELAY FR FOG FUSE TAIL FUSE GAUGE FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE H-LP L UPR FUSE H-LP R UPR FUSE 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) LEFT FRONT FOG LIGHT LEFT HEADLIGHT ECU (BEHIND LEFT HEADLIGHT) (W/ HID) LEFT HIGH BEAM HEADLIGHT (W/O HID) LT GRN WIRE LT GRN/RED WIRE PARKING BRAKE SWITCH R/B 2 R/B 3 (ON FRONT CENTER OF ENGINE COMPARTMENT, ON RADIATOR SUPPORT) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE 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 TAILLIGHT RELAY US MODELS W/ HID W/O HID W/O HID (ENGINE HARNESS, LEFT SIDE OF ENGINE) WHT WIRE WHT/BLK WIRE YEL WIRE

ABS INDICATOR AUTO LEVELING INDICATOR BLK WIRE BLK/RED WIRE BLU WIRE BLU/WHT WIRE BRAKE INDICATOR BRN/WHT WIRE BUZZER CHARGE INDICATOR COMBINATION METER ECU CRUISE INDICATOR DOME FUSE ECU-B FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FROM COMBINATION METER ECU (DIAGRAM 1 OF 2) GRY/BLU WIRE H-LP R LWR FUSE 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) LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP O/D MAIN SWITCH O/D OFF INDICATOR ODO/TRIP OPEN DOOR INDICATOR RED WIRE RED/BLK WIRE RHEOSTAT SOLID STATE SLIP INDICATOR SRS INDICATOR TAIL INDICATOR TC TAIL CANCEL TRAC OFF INDICATOR WASHER WASHER LEVEL WARNING SWITCH (IN RIGHT FRONT CORNER OF ENGINE COMPARTMENT) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 RCL- RCL+ SLD- SLD+ LFT- LFT+ GND +B FRV- FRV+ 1 2 3 4 5 6 7 8 9 PNK WIRE BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DOME FUSE ECU-IG FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FRONT FRONT PASSENGER'S SEAT POWER SEAT CONTROL SWITCH GRN/BLK WIRE 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 (IN LEFT SIDE OF CARGO AREA) 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) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MMRY SGND SSRS SLDF SLDR LUP LDWN FUP ORG/ WIRE PNK WIRE PNK/BLK WIRE POWER FUSE 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) RCLF RCLR REAR RECLINING RED WIRE SEAT MEMORY SWITCH SET- SLIDE SSFV SSRL SSRR PVCC FDWN IG SYSB VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

ABS FUSE AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM COOLING FANS SYSTEM ALT FUSE ANTI-LOCK BRAKES SYSTEM BATTERY BLK WIRE BLU WIRE COIL CONTACT COMPUTER DATA LINES SYSTEM D RR DOOR FUSE DEFOGGER SYSTEM ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) EXTERIOR LIGHTS SYSTEM, FOGLIGHT RELAY FR DEF FUSE FR FOG FUSE FROM S/ROOF FUSE (DIAGRAM 1 OF 4) FUSE FUSIBLE LINK BLOCK GENERATOR GRN WIRE GRY WIRE HEATER FUSE INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) INTERIOR LIGHTS SYSTEM NAVIGATION SYSTEM OBD FUSE ORG/ WIRE P FR DOOR FUSE P RR DOOR FUSE PANEL FUSE POWER FUSE POWER TOPS SYSTEM RDI FUSE CDS FUSE RED WIRE RR DEF FUSE S/ROOF FUSE SEAT HTR FUSE SEATS SYSTEM SEATS SYSTEM, MEMORY SYSTEM STARTER STOP FUSE TAIL FUSE TAILLIGHT RELAY TO ENGINE ROOM J/B TO ENGINE ROOM J/B (R/B 2, A/F HTR TO IGNITION SWITCH (CAVITY 2) (DIAGRAM 3 OF 4) TO POWER FUSE (DIAGRAM 1 OF 4) TO PWR OUTLET FUSE (DIAGRAM 4 OF 4) WHT WIRE YEL WIRE