Lexus RX II (2003-2006) computer data lines system Wiring diagrams

1 2 BACK UP BATTERY 19 3 2 7 21 8 22 23 32 9 MACC A/C AMPLIFIER (RIGHT SIDE OF DASH) AIR BAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) ANTENNA ANTENNA (TOP CENTER OF DASH) ATX- ATX+ BLK WIRE BLU WIRE BRN WIRE BS (RIGHT REAR OF CARGO AREA) BUS BUFFER COMPUTER COMPUTER DATA LINES SYSTEM EARLY PRODUCTION ECU- IG 1 FUSE FUSIBLE LINK BLOCK (IN ENGINE ROOM R/B) GAUGE 2 FUSE GPS GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IL (CENTER OF DASH) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) IOUT J/B 3 (LEFT SIDE J/C 12 (CENTER OF DASH) J/C 30, 31 (LEFT REAR OF VEHICLE) J/C 42 (REAR OF CARGO AREA) JUNCTION CONNECTOR LATE PRODUCTION LEFT REAR DOOR SPEAKER LT BLU WIRE LT GRN WIRE MARK LEVINSON EXCEPT MARK LEVINSON MAYDAY ECU MIC- SOFF PNK WIRE MTX- TX- RL+ TMUT OF DASH) ORG/ WIRE OVERHEAD J/B (FRONT CENTER OF ROOF) PNK WIRE RADIO 2 FUSE RADIO, PLAYER RED WIRE RL- MTX+ TX+ S+B SHIELD STEREO COMPONENT AMPLIFIER (CENTER REAR OF VEHICLE) TEL FUSE TRANSCEIVER/ VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TIM- +B MSW VC 2 4 3 1 MMRY 1 2 BATB BLK WIRE BLU WIRE BLU/BLK WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DCTY DOOR 1 FUSE DOOR 2 FUSE DOWN DRIVING POSITION MEMORY SWITCH ECU- IG 1 FUSE ECU-ACC FUSE FUSIBLE LINK ECU-B FUSE BLOCK (IN ENGINE ROOM R/B) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START II (AT LEFT KICK PANEL) IJ (LEFT TOP OF DASH) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) JUNCTION CONNECTOR 13 (CENTER OF DASH) JUNCTION CONNECTOR 28 (IN LEFT FRONT DOOR) LEFT FRONT DOOR COURTESY SWITCH (AT LEFT "B" PILLAR) LONG VC LT BLU WIRE LT GRN WIRE MSW ORG/ WIRE POWER WINDOW MASTER SWITCH RED WIRE SHORT UP TELESCOPIC MOTOR TELESCOPIC SENSOR TEM TES TILT MOTOR TILT MOTOR (AT BASE OF STEERING COLUMN) TILT SENSOR TILT, TELESCOPIC ECU (AT BASE OF STEERING COLUMN) TIM+ TIM- GND TL, TE FUSE UNLOCK WARNING SWITCH (UNDER LEFT SIDE OF DASH) VCE VCI TIS VCI TIS IG ECUB TIM+ GND VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B AUI- AUO- 1 2 3 4 5 6 7 8 +B IG DR 1 2 3 4 5 6 7 8 9 10 VR 1 2 3 4 5 PNK HSY WIRE ACAN IND HAZ ADIM AIR BAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) AUI+ AUO+ BLK WIRE BLU LT WIRE BLU WIRE BRN WIRE CG BATT COMBINATION METER TURN SIGNAL FLASHER (BEHIND LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM INSTRUMENT PANEL J/B DASH) ECU- ECU- IG 1 FUSE EHW FUSE FUSIBLE LINK BLOCK (IN ENGINE GAUGE 1 FUSE GND PNK/ WIRE GRN WIRE GRY WIRE GTX- HAZ PKB TC HOT AT ALL TIMES RADIO 1 FUSE ECU-B FUSE CRT FUSE HOT IN ON OR ACC HOT IN ON OR START HOT IN ON OR START HOT IN ON OR ACC IL (CENTER OF DASH) ILL ILL IM (AT RIGHT INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) INSTRUMENT RADIO 2 FUSE PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) J/C 11 (BEHIND LEFT SIDE OF J/C 11 (BEHIND LEFT SIDE OF DASH) J/C 14, 15 (CENTER OF DASH) J/C 16 (RIGHT SIDE OF DASH) J/C 20, 21 (RIGHT SIDE J/C 38 (AT REAR CARGO AREA) J/C 39 PARK/NEUTRAL (AT REAR POSITION CARGO AREA) SWITCH (ON TRANSAXLE) KICK PANEL) LT BLU WIRE LT GRN WIRE MARK LEVINSON EXCEPT MARK LEVINSON MULTI- DISPLAY SOUND SYSTEMS N-MU NTSC OF DASH) ORG/ WIRE P-AB PNK SHIELD 17 18 19 20 WIRE PNK TX+ VG SHIELD WIRE PNK WIRE RADIO, PLAYER BODY ECU (BEHIND LEFT SIDE OF DASH) REAR J/B (LEFT REAR SIDE OF CARGO AREA) RED WIRE RED/BLK WIRE REV MUTE ROOM R/B) SHIELD SHIELD SG SPD P-AB PBEW STEREO FL+ TFL+ FL- TFL- COMPONENT AMPLIFIER (CENTER REAR 8 2 19 15 OF VEHICLE) SYNC TX+ VG SHIELD VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 DOWN UP 11 12 14 PRG RDA DCTY 2 22 6 26 4 5 15 14 BATB 24 25 31 26 14 10 11 DOWN UP MPX IG ALTB BECU BLK WIRE BLU WIRE BLU/BLK WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DOOR 1 FUSE DOOR 2 FUSE DOOR LOCKS SYSTEM ECU- IG 1 FUSE ECU-ACC FUSE ECU-B FUSE FUSIBLE LINK BLOCK (IN ENGINE ROOM R/B) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START IG ECUB II (AT LEFT KICK PANEL) IJ (LEFT TOP OF DASH) IM (AT RIGHT KICK PANEL) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) J/C 11 (BEHIND LEFT SIDE OF DASH) J/C 13 (CENTER OF DASH) J/C 14, 15 (CENTER OF DASH) LEFT FRONT DOOR COURTESY SWITCH (AT LEFT "B" PILLAR) LT BLU WIRE LT GRN WIRE MOON ROOF CONTROL ECU (FRONT CENTER OF ROOF) OPN CLS ORG/ WIRE OVERHEAD J/B (FRONT CENTER OF ROOF) PNK WIRE RED WIRE S/ROOF FUSE VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

11 12 14 PRG RDA DCTY 2 22 6 26 4 5 15 14 BATB 25 24 31 27 26 11 10 14 1 5 UP DOWN MPX ALTB BECU BLK WIRE BLU WIRE BLU/BLK WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE CLS OPN COMPUTER DATA LINES SYSTEM DOOR 1 FUSE DOOR 2 FUSE DOOR LOCKS SYSTEM ECU- IG 1 FUSE ECU-ACC FUSE ECU-B FUSE FUSIBLE LINK BLOCK (IN ENGINE ROOM R/B) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START IG CLS OPN II (AT LEFT KICK PANEL) IJ (LEFT TOP OF DASH) IM (AT RIGHT KICK PANEL) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) J/C 11 (BEHIND LEFT SIDE OF DASH) J/C 13 (CENTER OF DASH) J/C 14, 15 (CENTER OF DASH) LEFT FRONT DOOR COURTESY SWITCH (AT LEFT "B" PILLAR) LT BLU WIRE LT GRN WIRE MOON ROOF CONTROL ECU (ON FRONT CENTER OF MOON ROOF) ORG/ WIRE OVERHEAD J/B (FRONT CENTER OF ROOF) PNK WIRE RED WIRE S/ROOF FUSE UP DOWN ECUB IG VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

11 12 PRG RDA 12 2 11 6 1 3 5 4 8 10 7 BDR COMPUTER DATA LINES SYSTEM 12 2 11 6 1 3 5 4 8 7 9 PNK BDR COMPUTER DATA LINES SYSTEM WIRE 19 20 21 COMPUTER DATA LINES SYSTEM 26 6 4 BECU ALTB 5 3 2 1 B+ PRG RDA BATB BDR GND PCT SGND BLK WIRE BLU WIRE BLU/BLK WIRE BN (AT LEFT "B" PILLAR) BODY ECU (BEHIND LEFT SIDE OF DASH) BP (LOWER RIGHT "B" PILLAR) BRN WIRE BZR COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM 2 12 7 11 8 3 5 4 6 1 COMPUTER DATA LINES SYSTEM PNK WIRE DOOR 2 FUSE DOOR CONTROL RECEIVER (TOP OF LEFT "D" PILLAR) ECU- IG 1 FUSE ECU-ACC FUSE ECU-B FUSE EG (LEFT FRONT OF ENGINE COMPT) FUSIBLE LINK BLOCK (IN ENGINE ROOM R/B) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START II (AT LEFT KICK PANEL) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) JUNCTION CONNECTOR 13 (CENTER OF DASH) JUNCTION CONNECTOR 28 (IN LEFT FRONT DOOR) JUNCTION CONNECTOR 28, 29 (IN LEFT FRONT DOOR) JUNCTION CONNECTOR 32, 33 (IN LEFT FRONT DOOR) JUNCTION CONNECTOR 32, 33 (IN RIGHT FRONT DOOR) JUNCTION CONNECTOR 5 KEYLESS BUZZER (LEFT FRONT FENDER ASSEMBLY) LEFT FRONT POWER WINDOW MOTOR (IN LEFT FRONT DOOR) LEFT REAR POWER WINDOW CONTROL SWITCH LEFT REAR POWER WINDOW MOTOR (IN LEFT REAR DOOR) LT BLU WIRE LT GRN WIRE ORG/ WIRE PLS PLS SSRB PNK WIRE POWER WINDOW MASTER SWITCH PWR FUSE PWS REAR J/B (LEFT REAR SIDE OF CARGO AREA) RED WIRE RIGHT FRONT DOOR LOCK CONTROL SWITCH RIGHT FRONT POWER WINDOW CONTROL SWITCH RIGHT FRONT POWER WINDOW MOTOR RIGHT REAR POWER WINDOW CONTROL SWITCH RIGHT REAR POWER WINDOW MOTOR (IN RIGHT REAR DOOR) RR DOOR LH FUSE RR DOOR RH FUSE SGND SGND GND SSRB SSRB PLS UNLOCK WARNING SWITCH (UNDER LEFT SIDE OF DASH) UP DN VCC VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+SR P+ P- SIL D- D+ +SL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 P-AB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 FSR+ FSR- AIR BAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) BLK WIRE BLU WIRE BODY ECU BRN WIRE CENTER CLUSTER INTEGRATION PANEL COMBINATION METER COMPUTER DATA LINES SYSTEM CSR- SFR+ SFR- ICR- ICR+ PR+ PR- EARLY PRODUCTION W/O LEXUS NAVIGATION SYSTEM ESR SSR+ VUPR CSR+ VUCR ESCR GAUGE 2 FUSE GRN WIRE GRY WIRE GSW HOT IN ON OR START IGN FUSE II (AT LEFT KICK PANEL) IK (TOP LEFT SIDE OF DASH) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) JUNCTION CONNECTOR 12 (CENTER OF DASH) LATE PRODUCTION W/ LEXUS NAVIGATION SYSTEM LEFT FRONT SIDE AIR BAG SENSOR (AT LEFT "B" PILLAR) LEFT REAR SIDE AIR BAG SENSOR (AT BASE OF LEFT "C" PILLAR) MAYDAY ECU (LEFT REAR OF VEHICLE) MULTI-DISPLAY P-AB RED WIRE SL- SR- SRS SSR+ VIO WIRE W/ LEXUS NAVIGATION SYSTEM WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

+SR -SR -SL +SL 1 2 3 4 5 6 7 8 9 10 11 12 +B DIA GND FSR- BGND BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BS (RIGHT REAR OF CARGO AREA) BUCKLE SWITCH (FRONT PASSENGER'S SIDE) (IN SEAT BELT BUCKLE) COMPUTER DATA LINES SYSTEM ECU-B FUSE FUSIBLE LINK BLOCK (IN ENGINE ROOM R/B) GRN WIRE GRY WIRE HOT AT ALL TIMES IG FSR+ BSW INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) JUNCTION CONNECTOR 37 LEFT FRONT OCCUPANT CLASSIFICATION SENSOR (IN LEFT SIDE OF FRONT PASSENGER SEAT) LEFT REAR OCCUPANT CLASSIFICATION SENSOR (LEFT REAR OF PASSENGER'S SEAT) LT BLU WIRE OCCUPANT CLASSIFICATION ECU (AT RIGHT FRONT SEAT) ORG/ WIRE RED WIRE RIGHT FRONT OCCUPANT CLASSIFICATION SENSOR (IN RIGHT SIDE OF PASSENGER SEAT) RIGHT FRONT SIDE AIR BAG SENSOR (AT BASE OF RIGHT "B" PILLAR) RIGHT REAR OCCUPANT CLASSIFICATION SENSOR (IN RIGHT REAR OF PASSENGER'S SEAT) RIGHT REAR SIDE AIR BAG SENSOR (AT BASE OF RIGHT "C" PILLAR) RIGHT SIDE AIR BAG SQUIB (UNDER FRONT PASSENGER'S SEAT) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

18 19 20 22 23 26 27 28 29 SIL WFSE TC VPA PNK WIRE 8 3 1 2 MREL BATT +B ACCEL POSITION SENSOR (ON ACCELERATOR PEDAL) BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (ECM) (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) EFI MAIN RELAY EXCEPT MULTI-MODE SHIFT LEVER TYPE GAUGE 1 FUSE GRN WIRE GRY WIRE HOT IN ON, START IH (LEFT KICK PANEL) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) J/C 10 (LEFT SIDE OF DASH) J/C 16 (BEHIND RIGHT CENTER OF DASH) J/C 17 (BEHIND RIGHT SIDE OF DASH) J/C 20, J/C 21 (RIGHT SIDE OF DASH) J/C 6 J/C 7, J/C 8 (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE M- M+ NCA WIRE ORG/ WIRE PARK/ NEUTRAL POSITION SWITCH (ON RIGHT SIDE OF TRANS) PNK WIRE RED WIRE RED/BLK WIRE SHIFT INTERLOCK SYSTEM VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

2 IND 3 IND 4 IND A/T OIL TEMP IND BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM DSL EARLY PROD, LATE PROD W/O MAYDAY SYSTEM ECT SNOW IND IND IND IND IND ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (IN TRANSAXLE) GAUGE 2 FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE HOT IN ON, START IK (TOP LEFT SIDE OF DASH) INSTRUMENT PANEL J/B IND INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/B 3 (LEFT SIDE OF DASH) LATE PROD W/ MAYDAY SYSTEM LCD (SHIFT RANGE POSITION) LT BLU WIRE LT GRN WIRE MULTI-MODE SHIFT LEVER TYPE EXCEPT MULTI-MODE SHIFT LEVER TYPE ORG/ WIRE RED WIRE RED/BLK WIRE SLT- SPEEDOMETER THO VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE