Lexus RX I (1997-2003) (under left center pillar) 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

12 13 12 5 MPX- MPX+ 15 16 17 RCO RDA RSSI 2 9 11 BECU 4 5 10 11 14 17 18 21 23 25 CYL SIG 5 10 BCTY ILE BDR CTY CPUB CTYB CTYE GND BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BSUB IG COMBINATION METER ECU CTY SIG BDR CPUB CTYE GND D RR DOOR FUSE DRIVER DOOR ECU (IN LEFT FRONT DOOR) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START 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) LEFT FRONT DOOR COURTESY LIGHT LEFT FRONT DOOR COURTESY SWITCH LEFT REAR DOOR COURTESY SWITCH LEFT REAR DOOR ECU (IN LEFT REAR DOOR LT GRN WIRE OPEN DOOR INDICATOR P FR DOOR FUSE P RR DOOR FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY LIGHT RIGHT FRONT DOOR COURTESY SWITCH SOLID STATE VCC CODE SQ VIO WIRE W/ NAV W/O NAV WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WIRELESS DOOR LOCK ECU (IN CENTER OF VEHICLE) YEL WIRE YEL/BLK WIRE YEL/RED WIRE

BACK DOOR COURTESY SWITCH BACK DOOR KEY, UNLOCK SWITCH BACK DOOR UNLOCK DETECTION SWITCH, BACK DOOR LOCK MOTOR BLK WIRE BRN WIRE DRIVER'S SEAT HEATER DRIVER'S SEAT POWER SEAT CONTROL SWITCH FRONT POWER OUTLET FRONT VERTICAL POSITION CONTROL SENSOR FUEL PUMP, (FUEL SENDER MAIN) HIGH MOUNTED STOPLIGHT J/C 12 (IN LEFT SIDE OF LUGGAGE COMPT) J/C 14 (IN LEFT SIDE OF LIFTGATE) J/C 16 (UNDER DRIVER'S SEAT) 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 LEFT TAILLIGHT LICENSE PLATE LIGHT NAVIGATION ECU POWER SEAT CONTROL SWITCH (DRIVER'S SEAT LUMBAR SUPPORT CONTROL) POWER SEAT CONTROL SWITCH (PASSENGER'S SEAT) POWER SEAT ECU 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 WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK ECU

BLK WIRE BLU WIRE DRIVER'S SEAT HEATER HI DRIVER'S SEAT HEATER SWITCH GAUGE FUSE GRN WIRE GRY 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/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) LO HI LT GRN WIRE PASSENGER'S SEAT HEATER LO PASSENGER'S SEAT HEATER SWITCH RED WIRE SEAT HEATER RELAY (BEHIND RIGHT SIDE OF DASH, NEAR ECM) SEAT HTR FUSE WHT WIRE

BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DOWN UP DRIVER'S SEAT POWER SEAT CONTROL SWITCH FRONT FRONT VERTICAL GRN/BLK WIRE J/C 12 (IN LEFT SIDE OF LUGGAGE COMPT) J/C 16 (UNDER DRIVER'S SEAT) J/C 17 (UNDER DRIVER'S SEAT) LT GRN WIRE LT GRN/RED WIRE ORG/ WIRE 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 RED WIRE SLIDE SLIDE POSITION CONTROL SENSOR FRONT VERTICAL POSITION CONTROL SENSOR UP DOWN VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

GAUGE FUSE GRN WIRE GRN/ORG WIRE 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) RED/BLU WIRE RIGHT BUCKLE SWITCH (IN BUCKLE) RIGHT TENSION REDUCER SOLENOID (AT BASE OF RIGHT "B" PILLAR) WHT/BLK WIRE

2 5 6 10 11 13 14 16 17 18 19 23 24 25 A- SIG KL A+ BDR LSW CTY CPUB KUL CTYE LSWE GND A- 4 5 8 9 13 14 15 17 18 19 20 25 A- 4 5 8 9 13 14 15 17 18 19 25 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 KEY LOCK, UNLOCK SWITCH DOOR LOCK CONTROL SWITCH DOOR LOCK MOTOR DOOR UNLOCK DETECTION SWITCH ECU-B FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) F/L DOOR FUSE FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GRN/BLK WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES J/C 7 (UPPER LEFT END OF DASH) J/C 9 (RIGHT END OF DASH) 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 LT GRN WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE 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 UNLOCK UNLOCK WARNING SWITCH VCC CODE SQ VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WIRELESS DOOR LOCK ECU (W/KEYLESS ENTRY) (IN CENTER OF VEHICLE) YEL WIRE YEL/RED WIRE

BLK WIRE BLU WIRE DOWN DOWN FRONT DRIVER'S SEAT POWER SEAT CONTROL SWITCH FRONT FRONT PASSENGER'S POWER SEAT CONTROL SWITCH FRONT VERTICAL GRN WIRE HOT AT ALL TIMES INSTRUMENT PANEL J/B (BEHIND LEFT SIDE 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) ORG/ WIRE POWER FUSE 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 RED WIRE SLIDE WHT WIRE YEL WIRE

1 2 3 6 7 DN LMT UP SGND PLS 1 5 7 8 10 11 12 14 15 17 18 20 23 25 UP SIG PCT LMT AUTO BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/WHT WIRE CTY SIG PCTO PCTI BDR CPUB CTYE PWE AUTO MDN MUP GND DOWN ECU-B FUSE ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) F/L DOOR FUSE FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GRN WIRE GRN/BLK WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 7 (UPPER LEFT END OF DASH) J/C 9 (RIGHT END OF DASH) LEFT REAR DOOR ECU (IN LEFT REAR DOOR LEFT REAR POWER WINDOW MOTOR LIMIT SWITCH LT GRN WIRE LT GRN/BLK WIRE POWER WINDOW CONTROL SWITCH PULSE SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT FRONT DOOR COURTESY SWITCH RIGHT FRONT POWER WINDOW MOTOR SGND BDR DN CTY CPUB PLS CTYE GND UNLOCK WARNING SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

+SR P+ P- SIL D- D+ +SL 1 2 3 4 5 6 7 8 9 10 11 12 SFR- SFR+ 1 2 3 4 PNK WIRE AIR BAG SQUIB (FRONT PASSENGER'S AIR BAG ASSEMBLY) AIR BAG SQUIB (STEERING WHEEL PAD) BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CENTER AIR BAG SENSOR ASSEMBLY (UNDER CENTER OF DASH, FORWARD OF CENTER CONSOLE) COMBINATION METER DATA LINK CONNECTOR (DLC) 3 (PARTIAL) (UNDER LEFT SIDE OF DASH) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) FPS GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HEATER FUSE HOT IN ON OR START IGN FUSE 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) LEFT BUCKLE SWITCH (ON LEFT SEAT BELT BUCKLE) LEFT PRETENSIONER LEFT SIDE AIR BAG SQUIB LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PL- PL+ PNK VUPR WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PR+ PR- ESR RBE+ FSR SSR+ RED WIRE RED/WHT WIRE 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- VUPL SHORT CONNECTOR (ON LEFT FRONT OF ENGINE COMPART- MENT) SL- SOLID STATE SPIRAL CABLE SRS WARNING INDICATOR SRS-IG FUSE SSL+ FSL LBE+ ESL TC -SR WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE