Lexus SC II facelift (2005-2010) combination switch Wiring diagrams

AFS ECU (LEFT END OF DASH) BACK-UP LIGHT SWITCH (ON TRANSMISSION) BKUP BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLU/YEL WIRE BP (AT LEFT QUARTERPANEL) COMBINATION SWITCH DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ENGINE CANL 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 HOT IN ON OR START DRIVE D-IG FUSE SIDE J/B (BEHIND LEFT KICK PANEL) J/C 17 (LEFT REAR OF LUGGAGE COMPT) JUNCTION CONNECTOR 25 (BEHIND RIGHT SIDE OF DASH) JUNCTION CONNECTOR 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) RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

27 7 18 30 22 CTY CTYB CYL 6 1 BDR GND AIR BAG SENSOR ASSEMBLY (UNDER FRONT OF CENTER CONSOLE) BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRN WIRE COMBINATION METER COMBINATION SWITCH CTY CTYB CYL D DOOR FUSE D-IG FUSE DOOR IND DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPARTMENT, BEHIND STRUT TOWER) GRN WIRE GRN/YEL WIRE HOT AT ALL TIMES 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) J/C 18 (RIGHT REAR OF LUGGAGE COMPT) LEFT DOOR COURTESY LIGHT LEFT DOOR COURTESY SWITCH LEFT LUGGAGE COMPARTMENT LIGHT LEFT SCUFF PLATE LIGHT LGCY LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF OF LUGGAGE COMPARTMENT) LUGGAGE ROOM J/B ECU MPX MPX-B MPXB ORG/ WIRE P DOOR FUSE P-GND PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE POWER SEAT ECU (DRIVER'S SEAT) (UNDER DRIVER'S SEAT) POWER SEAT ECU (FRONT PASSENGER'S SEAT) (UNDER FRONT PASSENGER'S SEAT) RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DOOR COURTESY LIGHT RIGHT DOOR COURTESY SWITCH RIGHT LUGGAGE COMPARTMENT LIGHT SKID CONTROL ECU (BEHIND LEFT END OF DASH) SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 TC CLTB AFS ECU (LEFT END OF DASH) ANTI-THEFT SYSTEM BLK WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE BLU/YEL WIRE BUBS COMBINATION SWITCH DBKL BKLR DBIL DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM ENGINE ROOM R/B 1 (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) EXTERIOR LIGHTS SYSTEM ANTI-LOCK BRAKES SYSTEM SHIFT INTERLOCK SYSTEM FUEL TSW FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HAZ STPA STP MPX-B HDCY HDLO HRLY HEAD HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN RUN OR START IG (LEFT SIDE OF STEERING COLUMN) IGNITION SWITCH II (ON LEFT SIDE DASH BRACE) INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM J/C 13 (BEHIND RIGHT SIDE OF DASH) LOCK OFF LT GRN WIRE LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPT) LUGGAGE ROOM J/B ECU MIRRORS SYSTEM MPX MPX-B MPX-IG FUSE MPX-IG HAZ IG 2 3 4 5 6 7 8 9 10 ORG/ WIRE PANEL FUSE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PNK WIRE PNK/BLU WIRE R/E RET CNCL MSW M+ TR+ CLTS CLTE RV HDCL RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RUN WIRE STPO STPI TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) TRUNK, TAILGATE, FUEL DOORS SYSTEM TURN LH GND TURN RH TURN, HAZ FUSE VIO WIRE VIO/WHT WIRE WARNING SYSTEM PASSIVE RESTRAINT SYSTEM WARNING SYSTEM WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM YEL WIRE

15 7 5 8 6 12 TAIL-RLY FMIG 5 13 2 10 12 1 SG MPX- MPX+ BUBS BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BP (AT LEFT QUARTERPANEL) CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION SWITCH COMPUTER DATA LINES SYSTEM CRA RELAY DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) FRONT CONTROLLER GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HIGH MOUNTED STOP LIGHT HOT AT ALL TIMES HOT AT ALL TIMES PASSENGER SIDE J/B (BEHIND FUSE RIGHT KICK PANEL) HOT IN ON OR START IG (LEFT SIDE OF STEERING COLUMN) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER JUNCTION CONNECTOR JUNCTION CONNECTOR 1 (IN ENGINE ROOM 2 R/B) JUNCTION CONNECTOR 14 (BEHIND RIGHT SIDE OF DASH) JUNCTION CONNECTOR 17 (LEFT REAR OF LUGGAGE COMPT) JUNCTION CONNECTOR 3 (IN ENGINE ROOM 2 R/B) LCE LP FUSE LEFT FRONT PARKING LIGHT RIGHT FRONT SIDE MARKER LIGHT LEFT FRONT SIDE MARKER LIGHT LEFT REAR COMBINATION LIGHT LEFT REAR SIDE MARKER LIGHT LEFT STOP LICENSE PLATE LIGHT LIGHT LT GRN/BLK WIRE LUGGAGE ROOM J/B ECU LUGGAGE ROOM J/B ECU (AT LEFT REAR CORNER OF LUGGAGE COMPT) MPX-IG FUSE OF DASH) P-GND RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT PARKING LIGHT RIGHT REAR COMBINATION LIGHT RIGHT REAR SIDE MARKER LIGHT RIGHT STOP RR J/B FUSE TAIL FUSE TAIL- LIGHT TURN SIGNAL TURN SIGNAL TAIL LIGHT VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

10 2 13 BUBS MPX+ MPX- AUTOMATIC LIGHT CONTROL SENSOR (BEHIND UPPER RIGHT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/YEL WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) CLTB CLTE CLTS COMBINATION METER COMBINATION SWITCH COMPUTER DATA LINES SYSTEM D-IG FUSE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU FR FOG FUSE FRONT FOG IND FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) HEAD HEAD INDICATOR (USA) HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN ON OR START IG (BEHIND CENTER OF DASH) IH (UNDER STEERING COLUMN) II (ON LEFT SIDE DASH BRACE) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 13 (BEHIND RIGHT SIDE OF DASH) LUGGAGE ROOM J/B ECU (AT LEFT REAR CORNER OF LUGGAGE COMPARTMENT) MPX+ MPX- MPX-B MPX-IG MPX-IG FUSE MPXB ORG/ WIRE PARKING BRAKE SWITCH (BEHIND LEFT SIDE OF DASH) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK/BLU WIRE POWER SUPPLY CIRCUIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE SKID CONTROL ECU (BEHIND LEFT END OF DASH) TAIL FUSE TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

1 2 10 12 14 7 18 17 3 4 13 24 5 6 21 IG 10 8 CANL CANH 10 9 ATX+ ATX- 13 2 10 MPX- MPX+ BUBS 13 33 MPX 24 25 CANL CANH 6 3 PNK TXS- TXS+ WIRE 7 14 6 SIL CANL CANH A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) AFS ECU (LEFT END OF DASH) AIR AIR BAG SENSOR ASSEMBLY (UNDER FRONT OF CENTER CONSOLE) 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 (DLC) 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 ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER FRONT PASSENGER'S POWER SEAT ECU (UNDER DRIVER'S SEAT) FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GTX+ GTX- PNK WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN OR OR START IG (BEHIND CENTER OF DASH) IH (UNDER STEERING COLUMN) J/C 13 (BEHIND RIGHT SIDE OF DASH) JUNCTION CONNECTOR 25 LT GRN WIRE LUGGAGE ROOM J/B ECU (AT LEFT REAR CORNER OF LUGGAGE COMPT) MPX MPX-IG FUSE MULTI-DISPLAY OF LUGGAGE COMPT) ORG/ WIRE PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU 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 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/ NAVIGATION WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 20 22 21 12 15 6 17 18 TC 2 10 11 1 9 8 IG A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) AFS ECU (LEFT END OF DASH) AFS OFF SWITCH AUDIO DOOR CONTROL SWITCH BLK WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) CIGARETTE VSC OFF LIGHTER SWITCH COMBINATION SWITCH DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPARTMENT, FORWARD OF STRUT TOWER) FRONT CONTROLLER FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START IH (UNDER STEERING COLUMN) IG (BEHIND CENTER OF DASH) II (ON LEFT SIDE DASH BRACE) 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) MPX MPX-IG FUSE MULTI- DISPLAY (W/ NAVI- GATION) ORG/ WIRE PANEL FUSE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE RADIO, PLAYER RED WIRE RED/BLU WIRE RED/YEL WIRE REMOTE CONTROL MIRROR SWITCH REOS RHEOSTAT SEAT HEATER SWITCH (IF EQUIPPED) TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) TIRE PRESSURE WARNING ECU, RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) TR+ RV TRANSMISSION CONTROL SWITCH TRANSPONDER KEY COMPUTER (LEFT SIDE OF DASH, BEHIND GAUGE ASSEMBLY) VIO WIRE VIO/WHT WIRE WHT GRN/ WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

BKUP BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BUBS COMBINATION SWITCH DEF TAIL 1 DEFOGGER SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ENGINE ROOM R/B 1 (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM FUEL OPN FUSE FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT AT ALL TIMES RR J/B FUSE HOT IN ON OR START MPX-IG FUSE J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 17 (LEFT REAR OF LUGGAGE COMPARTMENT) LCM+ LCTY LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPT) LUGGAGE ROOM J/B ECU MPX MPX-IG MPX-B HIC P-GND TAIL 2 L_O/C(P) FUEL OPN(P) FUEL OPN(O) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK LGCY WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

10 9 ATX+ ATX- 15 5 TX- TX+ 17 18 19 23 24 25 26 27 28 SGND MCO+ MCO- VR 3 6 TXS+ TXS- PNK WIRE 9 10 3 4 5 6 20 21 22 TLSW TSW- SGND MIN+ MIN- MACO SLD IVO+ IVO- AIR CONDITIONING SYSTEM BLK WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) CLOSE TILT COMBINATION SWITCH COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) EC (LEFT SIDE OF CYLINDER HEAD) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) GRN/RED WIRE GRY WIRE HOT IN IH (UNDER STEERING COLUMN) J/C 4, 5 (IN ECU BOX) J/C 9, 10 (BEHIND TOP LEFT END OF DASH) LT GRN WIRE LT GRN/BLK WIRE MIC+ MIC- MACC MIC- MIC+ MICROPHONE (NAVIGATION) MICROPHONE AMPLIFIER ASSEMBLY (RIGHT KICK PANEL) MULTI-DISPLAY NAVIGATION DOOR, TILT CONTROL NCA WIRE OPEN/ CLOSE OPEN 8 3 9 ORG/ WIRE PARKING BRAKE SWITCH (BEHIND LEFT SIDE OF DASH) PKB SPD IG PNK WIRE PNK/BLK WIRE RADIO, PLAYER RED WIRE RED/BLK WIRE RED/WHT WIRE STARTER FUSE SYNC VG TAIL TLSW VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

10 11 MPX 1 MPX 2 13 33 MPX 1 MPX 2 22 30 MPX 1 MPX 2 4 5 MPX 1 MPX 2 7 1 MPX 1 MPX 2 BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE CAN L COMBINATION SWITCH DRIVER DOOR ECU (IN DRIVER'S DOOR) GBT GND PS VPS GBT IG DIA FSR+ FSR- BSW BGND GPS BT VBT GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE LT GRN WIRE MPX MPX 1 MPX 2 OCCUPANT OCCUPANT CLASSIFICATION ECU (UNDER FRONT PASSENGER'S SEAT) ORG/ WIRE PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE POWER SEAT ECU (DRIVER'S) (UNDER DRIVER'S SEAT) POWER SEAT ECU (PASSENGER'S) (UNDER FRONT PASSENGER'S SEAT) RED WIRE RED/BLU WIRE RIGHT BUCKLE SWITCH (IN RIGHT FRONT SEAT BELT BUCKLE) SEAT BELT VBT BT TENSION SENSOR (NEAR BASE OF RIGHT "B" PILLAR) SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) TRANSPONDER KEY ECU VIO WIRE VPS PS GPS CLASSIFICATION SENSOR (UNDER FRONT PASSENGER'S SEAT) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE