Lexus SC I (1991-2001) (engine harn, left side of eng compt) Wiring diagrams

1 1 (W/ TCS) (W/O TCS) 3.0L 4.0L A/C DUAL PRESSURE SWITCH A/C SINGLE PRESSURE SWITCH ABS ACTUATOR ABS SOL RELAY BRAKE FLUID LEVEL SWITCH BRN WIRE COMBINATION METER DATA LINK CONNECTOR 2 CRUISE CONTROL SWITCH DATA LINK CONNECTOR 1 DATA LINK CONNECTOR 3 DAYTIME RUNNING LIGHT RELAY 3 DAYTIME RUNNING LIGHT RELAY 4 EFI MAIN RELAY ENGINE CONTROL MODULE ENGINE HOOD COURTESY SWITCH ENGINE OIL LEVEL WARNING SWITCH HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HTR RELAY IGNITER LEFT FRONT FOG LIGHT LEFT FRONT PARKING LIGHT LEFT FRONT SIDE MARKER LIGHT LEFT FRONT TURN SIGNAL LIGHT LEFT LOW BEAM HEADLIGHT MOBILE PHONE NCA WIRE NOISE FILTER (DEFOGGER SYSTEM) NOISE FILTER (IGNITION SYSTEM) POWER STEERING OIL PRESSURE SWITCH RED/ WHT WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RELAY BLOCK 6 (ON LEFT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) RIGHT FRONT FOG LIGHT RIGHT FRONT PARKING LIGHT RIGHT FRONT SIDE MARKER LIGHT RIGHT FRONT TURN SIGNAL LIGHT RIGHT LOW BEAM HEADLIGHT TELEPHONE TRANSCEIVER/ SPEAKER RELAY WASHER LEVEL SWITCH WHT RED/ WIRE WHT/ BLK WIRE WHT/BLK WIRE WHT/RED WIRE

1 2 3 4 5 6 IG 11 12 13 TAIL H-LP 3.0L 3.0L RIGHT LOW BEAM HEADLIGHT 4.0L AUTOMATIC LIGHT CONTROL SENSOR (LEFT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLU/WHT WIRE BRN WIRE COMBINATION METER COMBINATION SWITCH CTY DAYTIME RUNNING LIGHT RELAY (MAIN) (ON J/B 1) DAYTIME RUNNING LIGHT RELAY 2 (BEHIND LEFT HEADLAMP) DAYTIME RUNNING LIGHT RELAY 3 (BEHIND LEFT HEADLAMP) DAYTIME RUNNING LIGHT RELAY 4 (BEHIND LEFT HEADLAMP) DIMMER SWITCH DRL FUSE ECU-IG FUSE ECU-B FUSE EXTERIOR LIGHTS SYSTEM (TAILLIGHT RELAY) FOG LIGHT RELAY FOGLIGHT SWITCH FUSE BLOCK (BEHIND BATTERY) GENERATOR GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GRN/YEL WIRE HEAD FUSE (LH-LWR) HEAD FUSE (RH-LWR) HEAD IND HEAD LH UPR FUSE HEAD RELAY HEAD RH UPR FUSE HF HI DIM HIGH BEAM IND HIGH FLASH LO TAIL HEAD AUTO OFF LIGHT CONTROL SWITCH HOT AT ALL TIMES HOT AT ALL TIMES HOT IN START OR RUN HOT AT ALL TIMES R/B 4 (BEHIND LEFT KICK PANEL, ON FRONT SIDE OF J/B 1) FOG FUSE J/B 1 (BEHIND LEFT KICK PANEL) J/B 1 (LEFT KICK PANEL) LEFT DOOR OPEN DETECTION SWITCH LEFT HIGH BEAM HEADLIGHT LEFT LOW BEAM HEADLIGHT LT GRN WIRE LT GRN/BLK WIRE MAIN FUSE PLOCK PKB LOCK CHG- PNK 1 2 3 4 5 6 7 8 9 WIRE PNK DOOR LOCKS SYSTEM WIRE PNK/BLK WIRE R/B 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) R/B 5 (BEHIND LEFT KICK PANEL, ON REAR SIDE OF J/B 1) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DOOR OPEN DETECTION SWITCH RIGHT FOG LIGHT LEFT FOG LIGHT RIGHT HIGH BEAM HEAD- LIGHT WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL/BLK WIRE YEL/GRN WIRE

ACIS BRAIDED BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAIDED BRN WIRE CAMSHAFT POSITION SENSOR (LEFT FRONT OF ENGINE) CRANKSHAFT POSITION SENSOR (LEFT FRONT OF ENGINE) ENGINE CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) EVG GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE IGNITION COIL, IGNITER 1 IGNITION COIL, IGNITER 2 IGNITION COIL, IGNITER 3 IGNITION COIL, IGNITER 4 IGNITION COIL, IGNITER 5 IGNITION COIL, IGNITER 6 IGNITION COIL, IGNITER 7 IGNITION COIL, IGNITER 8 INSTRUMENT CLUSTER SYSTEM KNKR KNKL OCV- OCV+ KNOCK SENSOR 1 (TOP CENTER OF ENGINE) KNOCK SENSOR 2 (TOP CENTER OF ENGINE) LEFT CAMSHAFT TIMING OIL CONTROL VALVE (LEFT FRONT OF ENGINE) LEFT VVT SENSOR (TOP LEFT SIDE OF ENGINE) (LEFT CYLINDER HEAD) LT GRN WIRE MASS AIRFLOW METER (IN AIR INTAKE DUCT) NE- NE+ NOISE FILTER (LEFT REAR CORNER OF ENGINE) PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT VVT SENSOR (TOP RIGHT SIDE OF ENGINE) THROTTLE CONTROL MOTOR (ON THROTTLE BODY) VC HTR HTL 1 2 PRG CL- VPA THA VVR- VVL- VSV (ACIS) (TOP REAR OF ENGINE) VSV (EVAP) (TOP REAR OF ENGINE) VTA THW VVR+ VVL+ WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

+BM 1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 PWRL 1 2 3 BATT SNWL SNWI DI FPC 12 14 16 17 18 19 20 25 (2000) 2 3 TC STP 4 5 6 7 8 9 10 PNK WIRE A/C CONTROL ASSY ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/ WHT WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAID BRN WIRE BRN/WHT WIRE CL+ SLU- SLN- SLT- OIL 13 14 15 17 CRUISE CONTROL SWITCH CRUISE CONTROL SYSTEM DATA LINK CONNECTOR 2 (LEFT SIDE OF DASH) ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (IN TRANSMISSION) ENGINE CONTROL MODULE (UNUSED PINS NOT SHOWN) (BEHIND LOWER RIGHT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES IGSW MREL SIL TRC+ ENG+ +B TRC- ENG- NEO IMLD EOM PI CCV STI- 4 10 JUNCTION BLOCK 1 JUNCTION BLOCK 3 KEY UNLOCK WARNING SWITCH LT GRN WIRE LT GRN/RED WIRE NCO+ PNK WIRE OCR- ORG/ WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY BLOCK 2 ETCS FUSE RIGHT CAMSHAFT TIMING OIL CONTROL VALVE (TOP RIGHT FRONT OF ENGINE) RSPD PTNK CCS A/C SIL SLU+ SLN+ SLT+ NCO- TACH STA TACHOMETER TAIL FUSE MG CLT RELAY COOLING FAN ECU THEFT DETERENT INDICATOR TPC PWR ELS ACMG IDLO TRANSPONDER KEY AMPLIFIER (BEHIND LEFT SIDE OF DASH) TXCT CODE RXCK KSW 4 VEHICLE SPEED SENSOR (ON TRANSMISSION) VIO WIRE VSV (CANISTER CLOSED VALVE) (ON RIGHT SIDE OF ENGINE COMPT) VSV (PRESSURE SWITCHING VALVE) (UNDER RIGHT REAR OF VEHICLE) WHT RED/ WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE