Lexus LS IV (2006-2012) (left front of engine) Wiring diagrams

+BM BLK WIRE BLK/WHT WIRE BLU WIRE BLU/YEL WIRE BRN WIRE CANN CANP CCHG COMPT) COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (LEFT END OF DASH) DRIVING SUPPORT ECU ASSEMBLY (LEFT KICK PANEL) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) FCAS FUSE GND SGND CCS GRN WIRE HOT IN ON OR START IGB IGB SGND LT BLU WIRE LT GRN WIRE MILLIMETER WAVE RADAR SENSOR ASSEMBLY (CENTER OF FRONT GRILLE) NCA WIRE ORG/ WIRE PNK WIRE PNK/BLU WIRE PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY RED WIRE RED/YEL WIRE STP+ THO SP THROTTLE BODY ASSEMBLY (ON THROTTLE BODY) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK 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

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) 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 AT ALL TIMES HOT IN ON OR START IGCT 2 FUSE IGCT 2 RELAY IGCT RELAY J/C NCA WIRE OF DASH) ON- +RES OFF PARK/NEUTRAL POSITION SWITCH (RIGHT SIDE OF TRANSMISSION) RED WIRE SFTD SFTU SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) THROTTLE BODY ASSEMBLY (ON THROTTLE BODY) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

AFS ECU AIR FUEL RATIO SENSOR (BANK 2 SENSOR 1) SHIELD BLK WIRE BRAKE STROKE SENSOR TRANSMISSION SHIELD SHIFT SWITCH DLC 3 BRN WIRE CAMSHAFT CONTROL MOTOR (BANK 1) CAMSHAFT CONTROL MOTOR (BANK 2) CANISTER PUMP MODULE DRIVER SIDE J/B (LEFT END OF DASH) DRIVING SUPPORT ECU ELECTRIC POWER CONTROL ECU ENGINE CONTROL MODULE FAN CONTROL ECU FRONT BLOWER MOTOR IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 5 IGNITION COIL 7 IGNITION COIL 8 IGNITION IGNITION COIL 4 COIL 6 INJECTOR DRIVER 1 INJECTOR DRIVER 2 J/B 3 (RIGHT SIDE OF DASH) J/B 5 (LEFT SIDE OF DASH) KNOCK SENSORS (BANK 1 SENSOR 1), (BANK 2 SENSOR 1) SHIELD KNOCK SENSORS (BANK 1 SENSOR 2), (BANK 2 SENSOR 2) SHIELD NCA WIRE POWER STEERING ECU SPILL CONTROL INJECTOR VALVE DRIVER 2 (BANK 2) SHIELD SHIELD SPILL INJECTOR CONTROL DRIVER 1 VALVE SHIELD (BANK 1) SHIELD SPIRAL CABLE STEERING CONTROL ECU TRANSMISSION CONTROL MODULE WHT WIRE WHT/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 IG 14 13 PNK WIRE 4 2 1 5 3 CV+ CGND CB+ CV- LS 5 2 3 4 IGB SGND BLK WIRE BLU WIRE BRN WIRE CANN CANP CB+ CCHG CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CGND CANH COMPUTER DATA LINES SYSTEM COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CV+ CV- CANL D MPX-B 2 FUSE DRIVER MONITOR CAMERA (LEFT SIDE OF DASH) DRIVER MONITOR ECU ASSEMBLY (LEFT END OF DASH) DRIVER SIDE J/B (LEFT END OF DASH) DRIVING SUPPORT ECU ASSEMBLY (LEFT KICK PANEL) ENGINE ROOM J/B 2 FCAS FUSE GND SGND CCS GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGB LS CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) LT GRN WIRE MASTER MICRO COMPUTER MILLIMETER WAVE RADAR SENSOR ASSEMBLY (CENTER OF FRONT GRILLE) MPX+B IND NCA WIRE ORG/ WIRE P J/B (RIGHT SIDE OF FUSE ENGINE COMPT) PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE POWER SUPPLY PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY RED WIRE STP+ VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B BATT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BRN WIRE CAN (+) COMPUTER DATA LINES SYSTEM CONSOLE SWITCH E/G ECU-IG FUSE EFI FUSE EFI MAIN 2 RELAY EFI MAIN FUSE EFI MAIN RELAY EFI- MAIN 2 FUSE ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE CONTROLS SYSTEM 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/RED WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START J/B 4 (RIGHT SIDE OF DASH) MPX PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE RED WIRE STARTING/ CHARGING SYSTEM STP STA TRANSMISSION CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BLU/RED WIRE BRN WIRE CAN CONTROLLER CAN I/F COMBINATION METER COMPUTER DATA LINES SYSTEM CUTD D MPX-B 2 FUSE DRIVER SIDE J/B (LEFT END OF DASH) ECT PWR IND ECT SNOW IND ELECTRIC POWER CONTROL ECU BCUT FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT AT ALL TIMES PASSENGER SIDE J/B P-D/C CUT FUSE (RIGHT END OF DASH) HOT IN ON OR START J/B 4 (RIGHT SIDE OF DASH) LED DRIVER MASTER IND NTB NTO PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE RED WIRE SLT- SLU+ STOP FUSE STOP LIGHT SWITCH (LEFT SIDE OF DASH) TRANSMISSION CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) VIO WIRE WHT WIRE YEL WIRE

+B CAN+ CAN- CANL CANH TC 1 24 25 22 32 23 21 28 19 +BM 24 2 13 8 22 21 28 23 20 29 7 3 SPD STAR STP IGSW 6 4 5 3 1 2 VTA 7 8 16 20 29 1 2 10 9 13 14 21 SFTD SFTU BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BR- BRN WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE SENSOR (FRONT LEFT EVGR GRN WIRE GRN/RED WIRE GRN/YEL WIRE J/B 3 (RIGHT SIDE OF DASH) J/B 4 (RIGHT SIDE OF DASH) J/B 5 (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE M+ M- ETA VCTA M- M+ MASS AIR FLOW METER (BANK 1) (TOP LEFT SIDE OF ENGINE) MASS AIR FLOW METER (BANK 2) (TOP RIGHT SIDE OF ENGINE) NCA WIRE OF ENGINE) ORG/ WIRE PNK WIRE RED WIRE RED/BLU WIRE SFTD SFTU SHIFT DOWN SHIFT UP SPIRAL CABLE (IN STEERING COLUMN) STA NSW STARTING/CHARGING SYSTEM STEERING PAD SWITCH W/ MODULATOR THA THAR THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANSMISSION SHIFT SWITCH (BASE OF TRANSMISSION SHIFTER) VCPA EPA VPA BATT MREL VG THA VGR VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE C/OPN RELAY CANL CANH TACH COMPUTER DATA LINES SYSTEM DSVR EFI EFI MAIN MAIN 2 FUSE FUSE EFI MAIN 2 RELAY EFI MAIN RELAY ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) ENGINE ROOM R/B 2 (RIGHT F/PMP RELAY FUO FUEL GRN WIRE GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (ON EXHAUST SYSTEM, BELOW VEHICLE) HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) (ON EXHAUST SYSTEM, BELOW VEHICLE) HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM LT BLU WIRE NCA WIRE PASSENGER SIDE J/B (RIGHT END OF DASH) PNK LIDO CAN- CAN+ WIRE PNK MREL IREL FC FPR BATT IGSW WIRE PNK PNK KSW WIRE PNK PTNK WIRE PNK TC WIRE PNK WIRE RED WIRE SIDE OF ENGINE COMPT) TACH TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BLU/YEL WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (LEFT END OF DASH) EKNK ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE VVT ROOM FUSE J/B 2 (RIGHT SIDE OF ENGINE COMPT) I/F I/F I/F KNOCK CONTROL SENSOR (BANK 1 SENSOR 1) (LEFT SIDE OF ENGINE) KNOCK CONTROL SENSOR (BANK 2 SENSOR 1) (RIGHT SIDE OF ENGINE) LT GRN WIRE MALFUNCTION IND MASTER IND MICRO COMPUTER MPX-B-2 FUSE MPXB NCA WIRE PNK WIRE POWER SUPPLY RED WIRE VIO WIRE WATER TEMP IND WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL/BLK WIRE YEL/RED WIRE