Lexus SC II (2001-2005) driver side j/b ecu (behind left kick panel) Wiring diagrams

+BI RL+ RL- RR+ RR- 1 2 3 4 5 6 7 8 9 10 VGS 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 CSW 12 13 14 15 16 17 18 19 20 21 22 23 24 TS ABS IG FUSE ABS IND. BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BRAKE IND BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM D/G DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) D-IG FUSE DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FLO FUSE GGND GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GYAW HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN ON OR START HOT IN RUN OR START IGN FUSE JUNCTION CONNECTOR 13 (BEHIND RIGHT SIDE OF DASH) JUNCTION CONNECTOR 2 (IN ENGINE ROOM 2 R/B) LEFT REAR ABS SPEED SENSOR (AT LEFT REAR WHEEL ASSEMBLY) LT GRN WIRE MPX NCA WIRE ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE RIGHT REAR ABS SPEED SENSOR (AT RIGHT REAR WHEEL ASSEMBLY) SKID CONTROL ECU (BEHIND LEFT END OF DASH) STEERING SENSOR (ON STEERING COLUMN) STOP FUSE STOPLIGHT SWITCH (ON TOP OF BRAKE PEDAL BRACKET) TRIG TRIG +BO STP VIO WIRE VSC IND VSC OFF IND SLIP IND VSC OFF SWITCH VSC WARNING BUZZER (BEHIND LEFT SIDE OF DASH) VYS WHT WIRE WHT/BLK WIRE WHT/RED WIRE YAW - YAW RATE SENSOR (UNDER REAR OF CENTER CONSOLE) YEL WIRE YEL/RED WIRE YSS YD

A/C MPX- CONTROL ASSEMBLY (BEHIND MPX+ CENTER OF DASH) AIR BAG SENSOR ASSEMBLY (AT CENTER OF DASH, BELOW RADIO) BACK-UP LIGHT SWITCH BKUP BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLU/ORG WIRE BLU/YEL WIRE BP (AT LEFT QUARTERPANEL) COMBINATION METER MPX+ COMBINATION SWITCH (ON STEERING COLUMN, BEHIND STEERING WHEEL) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE JC-17 JUNCTION CONNECTOR 4, 5 (IN ECU BOX) LEFT BACK-UP LIGHT RIGHT BACK-UP LIGHT LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPARTMENT) LUGGAGE ROOM J/B ECU MPX P-GND PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU MPX- RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE RELAY ENERGIZED DRIVE D-IG FUSE SIDE J/B (BEHIND LEFT KICK PANEL) SKID CONTROL ECU (BEHIND LEFT END OF DASH) TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) TIRE PRESSURE MONITOR RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) VIO WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

1 2 3 4 5 6 IG PB HDLO 3 6 5 WSH-RLY 4 11 9 10 HEAD BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BU+ HEAD COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) D-IG FUSE DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ED (REAR OF LEFT FENDER) ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER FRONT WIPER/ WASHER CIRCUIT FRWA GRN WIRE GRY WIRE GRY/BLU WIRE H-LP CLN FUSE HDCL HDLO HEADLIGHT CLEANER CONTROL RELAY (AT LEFT FRONT OF ENGINE COMPT, BEHIND BUMPER) HEADLIGHT CLEANER MOTOR (AT LEFT FRONT CORNER OF ENGINE COMPT, BEHIND HEADLIGHT) HEADLIGHT CLEANER SWITCH HOT AT ALL TIMES HOT IN ON OR START J/C 3 (IN ENGINE ROOM 2 R/B) J/C 4 (IN ECU BOX) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) RED WIRE RED/BLK WIRE RED/YEL WIRE VIO WIRE WASH RELAY WASHER FUSE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

10 9 ATX+ ATX- 11 22 7 18 2 12 13 4 15 17 5 16 6 9 20 CG GND SIL WFSE IG BATT 13 2 10 MPX- MPX+ BUBS 13 33 MPX 19 8 TX- TX+ 6 3 PNK TXS- TXS+ WIRE A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) AIR AIR BAG SENSOR ASSEMBLY (AT CENTER OF DASH, BELOW RADIO) BAG BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION METER COMBINATION SWITCH DATA LINK CONNECTOR 3 (BEHIND LEFT SIDE OF DASH) DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) DRIVER'S POWER SEAT ECU (UNDER DRIVER'S SEAT) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN IN ECU BOX) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GRY WIRE GTX+ GTX- PNK WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IG (LEFT SIDE OF STEERING COLUMN) IH (UNDER STEERING COLUMN) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 9, 10 (BEHIND TOP LEFT END OF DASH) LT GRN WIRE LT GRN/BLK WIRE LUGGAGE ROOM J/B ECU (AT LEFT REAR CORNER OF LUGGAGE COMPT) MPX MPX-IG FUSE MULTI-DISPLAY ORG/ WIRE PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PASSENGER'S POWER SEAT ECU (UNDER PASSENGER'S SEAT) PNK/BLU WIRE RADIO 2 FUSE RADIO, PLAYER RED WIRE RED/BLU WIRE RED/WHT WIRE SIL SKID CONTROL ECU (BEHIND LEFT END OF DASH) SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) TELEPHONE COMPUTER THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) TIRE PRESSURE MONITOR RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) TRANSPONDER KEY COMPUTER (LEFT SIDE OF DASH, BEHIND GAUGE ASSEMBLY) VIO WIRE VIO/WHT WIRE W/ LINK SYSTEM W/ NAVIGATION WFSE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

BLK WIRE BLU WIRE COMBINATION SWITCH +B HORN SWITCH COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ED (REAR OF LEFT FENDER) ENGINE ROOM 1 R/B HORN FUSE (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER GRN WIRE GRN/YEL WIRE HORN RELAY HORN RLY HOT AT ALL TIMES JUNCTION CONNECTOR 3 (IN ENGINE ROOM 2 R/B) LEFT HORN MPX ORG/ WIRE PNK WIRE RED WIRE RIGHT HORN SECURITY FUSE WHT WIRE YEL WIRE

1 2 14 FSR+ FSR- RBE+ AIR BAG SENSOR ASSEMBLY (AT CENTER OF DASH, BELOW RADIO) BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BQ (AT RIGHT QUARTERPANEL) BRN WIRE BUZZER CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM CTY D-IG FUSE DBKL DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) FRONT PASSENGER SEAT BELT WARNING LIGHT FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START IH (UNDER STEERING COLUMN) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 9, 10 (BEHIND TOP LEFT END OF DASH) JC-18 JC-20 LEFT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT DOOR COURTESY SWITCH LT GRN/BLK WIRE MPX OPEN DOOR INDICATOR ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PBLT PNK/BLU WIRE RADIO 2 FUSE RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT BUCKLE SWITCH, OCCUPANT DETECTION SENSOR SEAT BELT INDICATOR TRANSPONDER KEY COMPUTER (LEFT SIDE OF DASH, BEHIND GAUGE ASSEMBLY) UNLOCK WARNING SWITCH WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 CPUB 24 23 21 20 13 12 IMI IMO 5 4 3 2 1 GND TXCT RXCK CODE +B 7 15 16 HRLY COMPUTER DATA LINES SYSTEM 7 8 1 2 4 5 DL LL PL RL AIRBAG BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLU WIRE BLU/ WHT WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) CNCL CODE RXCK TXCT AGND GND COMPUTER DATA LINES SYSTEM CRA RELAY DATA DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ED (REAR OF LEFT FENDER) EFIO EFII ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER GRN BLK/ WIRE GRN WIRE GRN/ YEL WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE HDCY HEAD LP RELAY HEADLIGHTS SYSTEM HORN FUSE HORN RELAY HORN RLY HORNS SYSTEM HOT AT ALL TIMES HOT IN ON OR START IG (25-28 NOT USED) 29 30 31 32 33 RDA RSSI IGN FUSE IH (UNDER STEERING COLUMN) IND BZR JUNCTION CONNECTOR 2 (IN ENGINE JUNCTION CONNECTOR 3 (IN ENGINE ROOM 2 R/B) LT GRN/BLK WIRE MAIN FUSE MAIN LUGGAGE COMPARTMENT DOOR OPENER SWITCH MPX ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (ON TRANSMISSION) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU (RIGHT SIDE KICK PANEL) PNK WIRE PNK/BLU WIRE RCO (16-19 NOT USED) 20 21 22 23 24 RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE ROOM 2 R/B) RSSI SECURITY INDICATOR LIGHT TAIL-RLY THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) THEFT DETERRENT HORN (AT RIGHT FRONT OF ENGINE COMPT) TRANSPONDER KEY AMPLIFIER (BEHIND DASH, RIGHT OF STEERING COLUMN) TRANSPONDER KEY COIL UNLOCK WARNING SWITCH (BEHIND LEFT SIDE OF DASH) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/YEL WIRE WIRELESS DOOR LOCK BUZZER YEL WIRE

3 2 MPX 2 MPX 1 4 3 2 1 ESL SSL- SSL+ VUPL A/C CONTROL ASSEMBLY AIR BAG AIR BAG SQUIB (FRONT PASSENGER AIR BAG ASSSEMBLY) BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE COMBINATION METER D-IG FUSE DATA LINK CONNECTOR 3 (PARTIAL) (BEHIND LEFT SIDE OF DASH) DBKL DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPARTMENT, IN ECU BOX) ENGINE ROOM 2 R/B (ON LEFT FRONT OF ENGINE COMPARTMENT, FORWARD OF STRUT TOWER) FRONT CONTROLLER GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRY/BLU WIRE HOT IN ON OR START J/C 20 (UNDER RIGHT SIDE OF DRIVER'S SEAT) J/C 9 (BEHIND TOP LEFT END OF DASH) LEFT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT FRONT AIR BAG SENSOR (AT LEFT FRONT OF ENGINE COMPARTMENT) LEFT SIDE AIR BAG SENSOR (BEHIND INTERIOR TRIM, FORWARD OF LEFT REAR WHEEL) LT GRN/BLK WIRE MPX ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PNK/BLU WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT AIR BAG SENSOR (AT RIGHT FRONT OF ENGINE COMPARTMENT) SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) SOLID STATE SRS TIRE PRESSURE MONITOR RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/PNK WIRE YEL/RED WIRE