Lexus SC II facelift (2005-2010) red/yel Wiring diagrams

ALT FUSE ALT-S FUSE BATTERY BLK WIRE BLU WIRE BRN WIRE CHARGE INDICATOR COMBINATION METER COMPUTER DATA LINES SYSTEM D-IG FUSE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) GENERATOR GRN WIRE HOT IN ON OR START IH (UNDER STEERING COLUMN) JUNCTION CONNECTOR 5 (IN ECU BOX) MPX PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE RED WIRE RED/WHT WIRE RED/YEL WIRE WHT WIRE YEL WIRE

3 11 6 5 WSH-RLY WLVL 4 9 1 2 MPX- S/M S/S +2 AIR BAG BLK WIRE BLK/RED WIRE BLU WIRE BLU/ORG WIRE COMBINATION METER COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ED (REAR OF LEFT FENDER) ENGINE ROOM R/B 2 (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER FRONT WIPER MOTOR (ON LEFT SIDE OF FIREWALL) GRN WIRE GRY WIRE GRY/BLU WIRE HEADLAMP WASHER CIRCUIT HOT AT ALL TIMES HOT IN ON OR START HOT IN ON OR START DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) D-IG FUSE J/C 3 (IN ENGINE ROOM 2 R/B) J/C 8 (BEHIND LEFT END OF DASH) MPX PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU (RIGHT SIDE KICK PANEL) POWER SUPPLY CIRCUIT RED WIRE RED/YEL WIRE VIO WIRE WASH RELAY WASHER FUSE WASHER IND WASHER LEVEL SENSOR (LEFT FRONT OF ENGINE COMPARTMENT) WASHER MOTOR (LEFT FRONT OF ENGINE COMPARTMENT) WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WIP WIPER FUSE 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 ECU (BEHIND LEFT KICK PANEL) ED (REAR OF LEFT FENDER) ENGINE ROOM R/B 1 (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) ENGINE ROOM R/B 2 (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 DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) D-IG FUSE J/C 3 (IN ENGINE ROOM 2 R/B) J/C 5 (IN ECU BOX) LT BLU WIRE 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

11 12 13 14 FSR+ FSR- BSW BGND 24 16 FSR- FSR+ AIR BAG SENSOR ASSEMBLY (UNDER FRONT OF CENTER CONSOLE) BLK WIRE BLK/RED WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BUCKLE SWITCH 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) FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN/BLK WIRE GRN/RED WIRE HOT AT ALL TIMES HOT IN ACC OR ON PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) HOT IN ON OR START IH (UNDER STEERING COLUMN) J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 17 (LEFT REAR OF LUGGAGE COMPT) LAPB LEFT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT DOOR COURTESY SWITCH LT GRN WIRE LT GRN/BLK WIRE MPX MPXB OCCUPANT CLASSIFICATION ECU (UNDER FRONT PASSENGER'S SEAT) OPEN DOOR IND ORG/ WIRE P-IG FUSE PBEW PBLT PNK/BLU WIRE POWER SUPPLY CIRCUIT RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT BUCKLE SWITCH (IN RIGHT FRONT SEAT BELT BUCKLE) SEAT BELT IND SPEEDOMETER TELLTALE LIGHT ASSEMBLY FRONT PASSENGER SEAT BELT WARNING LIGHT TRANSPONDER KEY COMPUTER (LEFT SIDE OF DASH, BEHIND GAUGE ASSEMBLY) UNLOCK WARNING SWITCH (BEHIND LEFT SIDE OF DASH) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 +B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CPUB 5 4 3 2 1 GND TXCT RXCK CODE +B 7 15 16 HRLY 7 6 IMO IMI AIR BAG BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLU WIRE BLU/ WHT WIRE BLU/BLK 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 COMPUTER DATA LINES SYSTEM INTERIOR LIGHTS 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) EXTERIOR ROOM 2 R/B) LIGHTS SYSTEM FRONT CONTROLLER GRN BLK/ WIRE GRN 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 WIRE LT GRN/BLK WIRE MAIN FUSE MAIN LUGGAGE COMPARTMENT DOOR OPENER SWITCH MPX ORG/ WIRE 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 GND RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RSSI 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 WIRELESS DOOR LOCK BUZZER (LEFT REAR OF SECURITY ENGINE COMPT) INDICATOR LIGHT WIRELESS DOOR LOCK CONTROL RECEIVER YEL WIRE

1 2 3 4 5 6 QWR+ RMR- QWR- LMR- LMR+ RMR+ PNK WIRE A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BM (UNDER PASSENGER'S SEAT) BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START IGN IH (UNDER STEERING COLUMN) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 18 (RIGHT REAR OF LUGGAGE COMPARTMENT) BQ LEFT LUGGAGE COMPARTMENT DOOR DRIVE MOTOR (AT LEFT SIDE OF LUGGAGE COMPT) LEFT ROOF DRIVE MOTOR (BELOW LEFT "C" PILLAR) LLR LCR LOR LPRB LLRE LCRE RPR LPRE RORE ROR LT GRN WIRE LT GRN/BLK WIRE MPX+ GND MPX- MPX-IG FUSE ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE RIGHT LUGGAGE COMPARTMENT DOOR DRIVE MOTOR (AT RIGHT SIDE OF LUGGAGE COMPT) RIGHT QUARTER POWER WINDOW MOTOR (FRONT OF RIGHT QUARTER PANEL) RIGHT ROOF DRIVE MOTOR (BELOW RIGHT "C" PILLAR) SIG SGND RPRB RPRE LPR RHRE SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) SWE CLS VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 13 14 15 16 17 18 19 20 +B ILL 10 5 PNK TX- TX+ WIRE 6 21 GTX+ GTX- PNK WIRE 6 5 4 4 3 2 1 1 PNK TXS- WIRE ANTA ANTB TXS+ ATX- ATX+ AUDIO DOOR CONTROL SWITCH AUO+ AUO- BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION METER D-IG FUSE DOME FUSE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) RADIO 2 FUSE HOT IN ON OR START IG+ IG+ IH (UNDER STEERING COLUMN) IG (BEHIND CENTER OF DASH) IJ (ON RIGHT SIDE DASH BRACE) ILL- ANT INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 12 (BEHIND RIGHT SIDE OF DASH) J/C 13 (BEHIND RIGHT SIDE OF DASH) LT GRN WIRE MPXB MULTI-DISPLAY MUTE R+ L+ SGND NAVIGATION ECU (IF EQUIPPED) (AT RIGHT REAR CORNER OF LUGGAGE COMPARTMENT) NCA WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE POWER ANTENNA SYSTEM R- L- GND RADIO 1 FUSE RADIO, PLAYER RED WIRE RED/WHT WIRE RED/YEL WIRE VIO WIRE VIO/WHT WIRE W/ NAVIGATION WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL/GRN WIRE

1 2 3 4 5 6 7 8 9 IG 20 4 3 MPX- MPX+ ANT ANT (BEHIND TOP LEFT END OF DASH) BLK WIRE BLU WIRE BLU/ORG WIRE BRN WIRE BUZZER CENTER J/B (BEHIND RIGHT CENTER OF DASH) CLSW IDSW GND RL FR FL PNK WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM TIRE PRESSURE WARNING RESET SWITCH D-IG FUSE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) FUSE HOT AT ALL TIMES HOT IN ON OR START HOT IN ON OR START PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) P-IG FUSE IG (BEHIND CENTER OF DASH) J/C 13 IH (BEHIND (UNDER RIGHT STEERING SIDE OF COLUMN) DASH) LEFT FRONT TIRE PRESSURE WARNING ANTENNA (AT LEFT FRONT WHEELWELL) LEFT REAR TIRE PRESSURE WARNING ANTENNA (AT LEFT REAR SIDE OF LUGGAGE COMPT) MPXB ORG/ WIRE PNK WIRE POWER SUPPLY CIRCUIT RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT FRONT TIRE PRESSURE WARNING ANTENNA (AT RIGHT FRONT WHEELWELL) RIGHT REAR TIRE PRESSURE WARNING ANTENNA (AT RIGHT REAR SIDE OF LUGGAGE COMPT) SKID CONTROL ECU (BEHIND LEFT END OF DASH) TIRE PRESSURE IND TIRE PRESSURE WARNING ECU, RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) TIRE PRESSURE WARNING RESET SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B IGSW BATT CANH CANL +BM 13 12 STPI STPO 2 13 5 6 17 4 25 24 EC MREL 31 32 NE- NE+ 4 8 16 3 34 33 35 26 32 27 STP ACCELERATOR PEDAL POSITION SENSOR (BEHIND LEFT CENTER OF DASH) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/RED WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENSOR (ON LEFT FRONT OF ENGINE) D-IG FUSE DATA LINK CONNECTOR 3 (BEHIND LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU ECT PWR IND ECT SNOW IND ED (REAR OF LEFT FENDER) EFI FUSE EFI RELAY ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH PWR ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE ROOM R/B 1 ETCS FUSE (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR START IH (UNDER STEERING COLUMN) J/C 2 (IN ENGINE ROOM R/B 2) J/C 23, 24 (LEFT SIDE OF ENGINE COMPT) J/C 3 (IN ENGINE ROOM R/B 2) J/C 4, 5 (IN ECU BOX) J/C 5 (IN ECU BOX) LT BLU WIRE MIL IND MPX MPXB NCA WIRE OF DASH) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU (RIGHT SIDE KICK PANEL) PNK WIRE PNK/BLK WIRE POWER SUPPLY CIRCUIT PWR RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE SNOW SPEEDOMETER STOP FUSE STOP LIGHT SWITCH (ON TOP OF TAC TACH TC EPA VPA VCPA TACHOMETER WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

19 30 9 SFTD SFTU 2 9 32 8 6 16 17 18 19 10 11 12 13 26 27 34 35 23 22 21 20 7 25 24 SR BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) EB (RIGHT SIDE OF CYLINDER HEAD) EC (LEFT SIDE OF CYLINDER HEAD) ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE COOLANT TEMPERATURE SENSOR (ON TOP RIGHT SIDE OF ENGINE) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE IG (BEHIND CENTER OF DASH) J/C 23 (LEFT SIDE OF ENGINE COMPT) J/C 4 (IN ECU BOX) LT BLU WIRE LT GRN WIRE M- M+ NCA WIRE NT- NT+ ORG/ WIRE PNK WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SLU- SLU+ EOIL OIL SLT- SLT+ THROTTLE BODY ASSEMBLY (TOP CENTER OF ENGINE) TRANSMISSION CONTROL SWITCH TURBINE SPEED SENSOR (ON TRANSMISSION) VEHICLE SPEED SENSOR (ELECTRONICALLY CONTROLLED TRANSMISSION) (ON TRANSMISSION) VIO WIRE VTA VC WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE