Lexus SC I (1991-2001) (engine harn, left fender apron) Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 SFRR SFRH 1 2 3 4 5 6 7 8 9 10 11 12 MR FL- FR+ AST SFLH SFLR SR FL+ FR- MT SRH SRR ABS ACTUATOR (AT RIGHT REAR CORNER OF ENGINE COMPT) ABS ECU (BEHIND RIGHT SIDE OF DASH) ABS INDICATOR ABS MOTOR RELAY BLK WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRAIDED COMBINATION METER DATA LINK CONNECTOR 1 DATA LINK CONNECTOR 2 (BEHIND LEFT SIDE OF DASH) ECU-IG FUSE GAUGE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN J/B 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) LEFT FRONT ABS SPEED SENSOR (LEFT FRONT WHEEL ASSEMBLY) LT GRN WIRE PNK/BLK WIRE R/B 6 (ON LEFT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) ABS SOL RELAY RED WIRE RED/YEL WIRE RIGHT REAR ABS SPEED SENSOR (RIGHT REAR WHEEL ASSEMBLY) STOP FUSE STOPLIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) TC RL- RR+ WA TS RL+ RR- D/G VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/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

BLK WIRE BLK/RED WIRE BLU WIRE DRIVER'S SEAT HEATER (IN SEAT BACK) DRIVER'S SEAT HEATER (IN SEAT CUSHION) ECU-IG FUSE FRONT PASSENGER'S SEAT HEATER (IN SEAT BACK) FRONT PASSENGER'S SEAT HEATER (IN SEAT CUSHION) FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) FUSIBLE LINK GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION MAIN RELAY JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) LEFT RED WIRE RELAY BLOCK 4 (BEHIND LEFT KICK PANEL, ON FRONT SIDE OF JUNCTION BLOCK) RIGHT SEAT HEATER SWITCH SEAT HTR FUSE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

ACCEL POSITION SENSOR (RIGHT REAR SIDE OF ENGINE) BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRAIDED BRN WIRE EFI FUSE EFI RELAY ENGINE COOLANT TEMPERATURE SENSOR (LEFT FRONT SIDE OF ENGINE) FPC FUEL PUMP (IN FUEL TANK) FUEL PUMP ECU (LEFT SIDE OF LUGGAGE COMPARTMENT) GRN WIRE GRN/RED WIRE HOT AT ALL TIMES HOT W/DEF RELAY ENERGIZED HOT W/TAILLIGHT RELAY ENERGIZED HTL HTR IGN FUSE ST FUSE IGNITION SWITCH INSTRUMENT CLUSTER SYSTEM JUNCTION BLOCK 1 LOCK ON LT GRN WIRE MIRHTR FUSE P/N PARK/NEUTRAL POSITION SWITCH (ON TRANSAXLE) PNK 5 6 WIRE PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY BLOCK 2 SHORT CONNECTOR (BEHIND RIGHT SIDE OF DASH) STARTING/CHARGING SYSTEM TAIL FUSE THROTTLE POSITION SENSOR (ON THROTTLE BODY) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

3 4 5 6 7 8 9 10 PNK WIRE ACCEL POSITION SENSOR (TOP CENTER OF ENGINE) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRAIDED BRN WIRE EFI FUSE EFI MAIN RELAY ENGINE COOLANT TEMPERATURE SENSOR (RIGHT FRONT TOP OF ENGINE) FPC GRN WIRE GRN/RED WIRE HOT AT ALL TIMES HTL HTR IGN FUSE IGNITION SWITCH INJECTOR 1 INJECTOR 2 (ENGINE HARN, RIGHT SIDE OF FIREWALL) INJECTOR 3 INJECTOR 4 INJECTOR 5 INJECTOR 6) INJECTOR 7 (-) INJECTOR 8 (-) JUNCTION BLOCK 1 ST FUSE LOCK ON LT GRN WIRE P/N PARK/NEUTRAL POSITION SWITCH (ON TRANSMISSION) PNK WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) SHORT CONNECTOR (RIGHT SIDE OF DASH) STARTING/ CHARGING SYSTEM INSTRUMENT CLUSTER SYSTEM THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANSMISSION CONTROL SWITCH WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE