Lexus LS IV (2006-2012) steering switch ecu Wiring diagrams

BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE C/OPN RELAY COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH DRIVER SIDE J/B (LEFT END OF DASH) ECU-IG FUSE EFI EFI MAIN EFI FUSE MAIN RELAY ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) ENGINE ROOM R/B 2 (RIGHT SIDE OF ENGINE COMPT) ETCS FUSE FUSE GRN WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START HOT IN ON OR START E/G RM- J/B 5 (LEFT SIDE OF DASH) LT GRN WIRE NCA WIRE ON- +RES -SET MODE OFF PNK WIRE RED WIRE RELAY SPIRAL CABLE (IN STEERING COLUMN) STEERING PAD SWITCH W/ MODULATOR STEERING SWITCH ECU THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANSMISSIONS SYSTEM VIO WIRE W/ PADDLE SHIFT SWITCH W/O PADDLE SHIFT SWITCH WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BLOCK J/B 3 (RIGHT SIDE OF DASH) BLU WIRE BRN WIRE CENTER JUNCTION CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH ASSEMBLY DRIVER SIDE J/B (LEFT END DRIVER SIDE J/B (LEFT END OF DASH) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 2 (RIGHT SIDE OF ENGINE COMPT) FUSE GRN WIRE HOT IN ON OR START IGCT 2 FUSE IGCT 2 RELAY IGCT RELAY J/C LT GRN WIRE OF DASH) ON- MODE OFF ORG/ WIRE RED WIRE SFTD SFTU SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY W/ MODULATOR STEERING SWITCH ECU VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 HORL HORH 1 5 PNK BATB ALTB WIRE BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) E/G RM- FMIG CANP CANN FR CTRL ALT FUSE FR CTRL BAT FUSE FUSE HIGH PITCHED HORN ASSEMBLY (LEFT FRONT OF ENGINE COMPT) HORN SWITCH HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM ECU-B FUSE J/B 2 (RIGHT SIDE OF ENGINE COMPT) HOT AT ALL TIMES P-D/C CUT FUSE HOT IN ON OR START LOW PITCHED HORN ASSEMBLY (RIGHT FRONT OF ENGINE COMPT) LT GRN WIRE MULTIPLEX NETWORK FRONT LIGHT ECU (RIGHT FRONT OF ENGINE COMPT) PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE RED WIRE STEERING PAD SWITCH ASSEMBLY STEERING PAD SWITCH ASSEMBLY W/ MODULATOR STEERING SWITCH ECU WHT WIRE WHT/BLK WIRE YEL WIRE

13 14 CANL CANH 18 34 27 VC NE- NE+ PNK WIRE 4 6 5 PNK WIRE BDCY BLK WIRE BLU WIRE BRN WIRE CANN CANP COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENSOR CUTD D-ACC FUSE DCM (TELEMATICS TRANSCEIVER) (RIGHT END OF DASH) DCTY DISP DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B (LEFT END OF DASH) ELECTRIC POWER CONTROL ECU BCUT ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FRONT PAD WEAR INDICATOR SWITCH FUEL INJECTOR (DIRECT INJECTION 1) (LEFT SIDE OF INTAKE MANIFOLD) FUEL INJECTOR (PORT INJECTION 1) (LEFT SIDE OF INTAKE MANIFOLD) FUEL SENDER GAUGE (LEFT SIDE OF FUEL TANK) FUEL SENDER GAUGE (SUB) (RIGHT SIDE OF FUEL TANK) FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INJECTOR DRIVER (BANK 1) (CENTER REAR OF ENGINE COMPT) J/B 3 (RIGHT SIDE OF DASH) J/B 4 (RIGHT SIDE OF DASH) J/B 5 (LEFT SIDE OF DASH) LCTY LEFT FRONT DOOR COURTESY SWITCH (LEFT "B" PILLAR) LEFT REAR DOOR COURTESY SWITCH (LEFT "C" PILLAR) LEFT REAR HEIGHT CONTROL SENSOR (RIGHT REAR WHEELWELL) LGLB LT BLU WIRE LT GRN WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MAIN BODY ECU MPXB NCA WIRE NE NE- VC PNK WIRE P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PCTY PIND PNK WIRE RCTY REAR JUNCTION BLOCK ECU REAR PAD WEAR INDICATOR SWITCH REAR SEAT ENTERTAINMENT TABLE SWITCH RED WIRE RESET+ RIGHT FRONT DOOR COURTESY SWITCH (RIGHT "B" PILLAR) RIGHT REAR DOOR COURTESY SWITCH (RIGHT "C" PILLAR) RL+ RL- 7 8 RR MPX B 1 FUSE RR MPX-B 2 FUSE SPDP STEERING PAD SWITCH STEERING PAD SWITCH W/ MODULATOR STEERING SWITCH ECU STEREO COMPONENT AMPLIFIER (RIGHT REAR OF LUGGAGE COMPT) TOP OF ENGINE) TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE W/ MULTI DISPLAY WHT WIRE WHT/BLK WIRE YEL WIRE

13 14 CANL CANH 18 34 27 17 VC NE- NE+ 10 6 4 5 PNK WIRE BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENSOR DIRECT FUEL INJECTOR ASSEMBLY 1 (LEFT SIDE OF INTAKE MANIFOLD) DISP DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B (LEFT END OF DASH) ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ RR HYBRID VEHICLE CONTROL ECU INJECTOR DRIVER (BANK 1) (CENTER REAR OF ENGINE COMPT) LGLB LT BLU WIRE LT GRN WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MPXB NCA WIRE NE- NE VC P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PIND PNK WIRE PORT FUEL INJECTOR ASSEMBLY 1 REAR JUNCTION BLOCK ECU RED WIRE RESET+ RR MPX B 1 FUSE RR MPX-B 2 FUSE SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY STEERING PAD SWITCH ASSEMBLY W/ MODULATOR STEERING SWITCH ECU SYSTEM TELEVISION SWITCH, VOLUME ASSEMBLY TOP OF ENGINE) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

12 26 ILL+ DR 18 1 3 6 11 16 9 10 PNLI GND SIG BDR CPUB 2 1 BCUT CUTD 2 3 ILL+ ILL- 22 12 5 DR ILL+ HILL 4 6 CIL- ILL- BLK WIRE BLK/WHT WIRE CANP CANN CLOCK COIN BOX ILLUMI- NATION LIGHT COLUMN) COMPUTER DATA LINES SYSTEM CONSOLE BOX ILLUMI- NATION LIGHT CONSOLE SWITCH CONTROL ECU DISPLAY, NAVIGATION MODULE DISPLAY (RIGHT SIDE OF LUGGAGE COMPT) DOOR DRIVER SIDE J/B (LEFT END OF DASH) FRONT CONSOLE BOX LIGHT ASSEMBLY ILL+ FRONT PASSENGER'S SEAT RECLINING CONTROL SW FRONT PASSENGER'S SEAT SLIDE CONTROL SW GLOVE BOX ILLUMINATION LIGHT GRN WIRE GRY WIRE HILL HOT AT ALL TIMES HOT IN ON OR START ILL ILL INTEGRATION CONTROL, PANEL ASSEMBLY J/B 5 (LEFT SIDE OF DASH) J/B 5 (LEFT SIDE OF DASH) (LEFT KICK PANEL) LT GRN WIRE ORG/ WIRE OUTER MIRROR SWITCH ASSEMBLY P- DOOR OF DASH) MPX-B FUSE FUSE FUSE FUSE P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END PNK MSW- MSW+ WIRE PNK WIRE RADIO RECEIVER ASSEMBLY REAR CONSOLE BOX LIGHT ASSEMBLY ILL+ REAR DOOR SUNSHADE SWITCH REAR SEAT HEATER SW REAR SEAT CLIMATE CONTROL SW REAR SEAT RETURN SWITCH REAR SUNSHADE SW RED WIRE RED/YEL WIRE REGISTER ILLUM- NATION (DRIVER SIDE) REGISTER ILLUMINATION (CENTER) REGISTER ILLUMINATION (PASSENGER SIDE) RIGHT FRONT DOOR CONTROL ECU (FRONT PASSENGER'S DOOR) RIGHT FRONT SEAT MEMORY SWITCH (RIGHT SIDE OF LUGGAGE COMPT) SPIRAL CABLE (IN STEERING STEERING PAD SWITCH STEERING PAD SWITCH W/ MODULATOR STEERING SWITCH ECU VIO WIRE W/ MULTI DISPLAY W/ MULTI DISPLAY W/O MULTI DISPLAY W/O MULTI DISPLAY W/O W/ MULTI MULTI DISPLAY DISPLAY WHT (OR RED) WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

1 2 ILL- ILL+ 2 1 ILL- ILL+ 26 12 DR ILL+ 3 5 6 ILL- ASSEMBLY BLK WIRE CENTER FRONT REGISTER ILLUMINATION CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) CIL- CLOCK ASSEMBLY COIN BOX ILLUMINATION LIGHT CONSOLE BOX LIGHT SUB- ASSEMBLY DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B (LEFT END OF DASH) FRONT CONSOLE BOX ILLUMINATION LIGHT GLOVE BOX ILLUMINATION LIGHT GRN WIRE HILL HOT AT ALL TIMES LEFT FRONT REGISTER ILLUMINATION LT GRN WIRE OUTER MIRROR SWITCH ASSEMBLY P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) RADIO RECEIVER ASSEMBLY REAR CONSOLE BOX ILLUMINATION LIGHT RED WIRE RED/WHT WIRE RIGHT FRONT REGISTER ILLUMINATION SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH STEERING PAD SWITCH ASSEMBLY W/ MODULATOR STEERING SWITCH ECU WHT/BLK WIRE YEL WIRE