Lexus SC I (1991-2001) (rear of right door sill) Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 GRD 1 2 3 4 5 6 7 8 9 10 TO ACT- ACT+ ACTD PRLY IG BLK WIRE BLK/ WHT WIRE BLK/RED WIRE BLK/WHT (OR RED/BLK) WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN (OR GRN/WHT) WIRE BRN/WHT WIRE BZR CIG FUSE DIODE DOME FUSE DOOR FUSE DSWD DSWL DSWP KSW LSWP ECU-IG FUSE ENGINE HOOD COURTESY SWITCH (CENTER FRONT OF ENGINE COMPARTMENT) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HEADLIGHTS SYSTEM HORN RELAY HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR ACCY HOT IN RUN OR START INTEGRATION RELAY JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) KSW LSWD LSWP IG CTY LEFT FRONT DOOR KEY LOCK/UNLOCK SWITCH LOCK LUG HEAD SH IND TSW DSWH LSWD LUGGAGE COMPARTMENT LIGHT SWITCH (CENTER REAR OF TRUNK) MASTER POWER WINDOW/DOOR LOCK CONTROL SWITCH PNK WIRE POWER MAIN RELAY POWER CIRCUIT BREAKER RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RIGHT FRONT DOOR KEY LOCK/UNLOCK SWITCH RIGHT FRONT DOOR LOCK CONTROL SWITCH STARTER RELAY TAIL HORN SRLY TAILLIGHT RELAY THEFT DETERRENT, DOOR LOCK ECU (BEHIND INSTRUMENT CLUSTER) UL +B UNLOCK VIO WIRE WHT (OR GRN) WIRE WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (AT LEFT SIDE OF ENGINE COMPARTMENT, NEAR STRUT TOWER) YEL GRN/ WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

AUTO AUTOMATIC LIGHT CONTROL SENSOR BLK WIRE BLU WIRE BRN WIRE COMBINATION METER COMBINATION SWITCH DIODE FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT, BEHIND BATTERY) FUSIBLE LINK GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HEAD HOT AT ALL TIMES HOT IN ON OR START INTEGRATION RELAY (LEFT SIDE OF DASH) JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) LEFT REAR COMBINATION LIGHT LICENSE PLATE LIGHT LIGHT LIGHT FAILURE SENSOR (LEFT REAR SIDE OF LUGGAGE COMPARTMENT) OFF TAIL REAR LIGHT WARNING LIGHT RED WIRE RED/WHT WIRE RIGHT REAR COMBINATION LIGHT STOP FUSE STOP LIGHT STOPLIGHT SWITCH (NEAR BRAKE PEDAL) TAIL FUSE TAIL LIGHTS TAILLIGHT RELAY TURN SIGNAL VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/GRN WIRE

1 (OR 2) A/C CONTROL ASSEMBLY ABS ECU ABS, TRACTION ECU BLK WIRE BLK/ WHT WIRE BLOWER MOTOR CONTROL RELAY BLU/BLK WIRE BLU/RED WIRE BRN WIRE CIGARETTE LIGHTER COMBINATION METER DATA LINK CONNECTOR 3 DRIVER'S POWER SEAT CONTROL SWITCH DRIVER'S SEAT SLIDE POSITION SENSOR DRIVING POSITION MEMORY, RETURN SWITCH ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT, SEAT HEATER SWITCHES ENGINE CONTROL MODULE ENGINE CONTROL MODULE (3.0L) FROM JUNCTION FRONT VERTICAL POSITION SENSOR DRIVER'S SEAT RECLINE MOTOR FUEL LID OPENER SOLENOID GLOVE BOX LIGHT SWITCH HIGH MOUNTED STOP LIGHT JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) JUNCTION CONNECTOR J/C 2 (CENTER OF REAR SHELF) LUGGAGE COMPARTMENT DOOR OPENER SWITCH PASSENGER'S SEAT BACK HEATER PASSENGERS POWER SEAT CONTROL SWITCH POWER SEAT ECU REAR VERTICAL POSITION SENSOR REAR WINDOW DEFOGGER RED/ WHT WIRE RHEOSTAT RIGHT DOOR KEY LOCK/ UNLOCK SWITCH RIGHT DOOR LOCK CONTROL SWITCH RIGHT DOOR LOCK MOTOR, DOOR UNLOCK DETECTION SWITCH, OPEN DETECTION SWITCH RIGHT REMOTE CONTROL MIRROR SHIFT LOCK ECU TILT, POWER TELESCOPIC ECU TRACTION CUT SWITCH W/ MEMORY W/O MEMORY WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WIRELESS DOOR LOCK CONTROL ECU

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 SYSB SLSW PVCC BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DOME FUSE DOWN DRIVER'S POWER SEAT RECLINING MOTOR CONTROL (UNDER DRIVER'S SEAT) FRONT FRONT VERTICAL MOTOR (UNDER RIGHT SEAT) FRONT VERTICAL POSITION SENSOR (UNDER DRIVER'S SEAT) FRONT VERTICLE GAUGE FUSE GRN WIRE GRN/RED WIRE GRN/YEL WIRE HOLD HOT AT ALL TIMES HOT IN ON OR START JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LT GRN WIRE LT GRN/RED WIRE LUMBAR SUPPORT LUMBAR SUPPORT MOTOR (UNDER RIGHT SEAT) PARK/ NEUTRAL POSITION SWITCH PASSENGER'S RECLINING LIMIT SWITCH (UNDER SEAT) PASSENGER'S SEAT ECU (UNDER PASSENGER'S SEAT) PASSENGER'S SEAT SLIDE LIMIT SWITCH (UNDER SEAT) PASSENGER'S SEAT SLIDE MOTOR (UNDER RIGHT SEAT) PASSENGER'S SEAT SLIDE POSITION SENSOR (UNDER SEAT) PASSENGER'S SEATBELT BUCKLE SWITCH (IN BUCKLE) PASSENGER'S TENSION REDUCER SOLENOID PASSENGERS POWER SEAT CONTROL SWITCH REAR REAR VERTICAL MOTOR (UNDER RIGHT SEAT) REAR VERTICAL POSITION SENSOR (UNDER DRIVER'S SEAT) REAR VERTICLE RECLINING RECLINING MOTOR (UNDER RIGHT SEAT) RED WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMP, BEHIND BATTERY) RELEASE SGND GND SLD- SLDR SLDF SLD+ +B PD RFSW SSRS PBCL RRSW SLIDE SLIDE POSITION SENSOR (UNDER DRIVER'S SEAT) VIO WIRE VIO/WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 GRD 1 2 3 4 5 6 7 8 9 10 TO ACT- ACT+ ACTD PRLY IG BLK WIRE BLK/ WHT WIRE BLK/RED WIRE BLK/WHT (OR RED/BLK) WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN (OR GRN/WHT) WIRE BRN/WHT WIRE BZR CIG FUSE DIODE DOME FUSE DOOR FUSE DSWD DSWL DSWP KSW LSWP ECU-IG FUSE ENGINE HOOD COURTESY SWITCH (CENTER FRONT OF ENGINE COMPARTMENT) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HEADLIGHTS SYSTEM HORN RELAY HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR ACCY HOT IN RUN OR START INTEGRATION RELAY JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) KSW LSWD LSWP IG CTY LEFT FRONT DOOR KEY LOCK/UNLOCK SWITCH LOCK LUG HEAD SH IND TSW DSWH LSWD LUGGAGE COMPARTMENT LIGHT SWITCH (CENTER REAR OF TRUNK) MASTER POWER WINDOW/DOOR LOCK CONTROL SWITCH PNK WIRE POWER MAIN RELAY POWER CIRCUIT BREAKER RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RIGHT FRONT DOOR KEY LOCK/UNLOCK SWITCH RIGHT FRONT DOOR LOCK CONTROL SWITCH STARTER RELAY TAIL HORN SRLY TAILLIGHT RELAY THEFT DETERRENT, DOOR LOCK ECU (BEHIND INSTRUMENT CLUSTER) UL +B UNLOCK VIO WIRE WHT (OR GRN) WIRE WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (AT LEFT SIDE OF ENGINE COMPARTMENT, NEAR STRUT TOWER) YEL GRN/ WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE CIG FUSE DOOR FUSE ECU-IG FUSE FUEL LID OPENER SOLENOID (AT RIGHT SIDE OF LUGGAGE COMPARTMENT) FUEL LID OPENER SWITCH HOT AT ALL TIMES HOT IN ACCY OR RUN J/B 1 (BEHIND LEFT KICK PANEL) J/B 3 (BEHIND CENTER OF DASH) LUGGAGE COMPARTMENT DOOR OPENER MOTOR (CENTER REAR OF TRUNK) LUGGAGE COMPARTMENT DOOR OPENER SWITCH THEFT DETERRENT, DOOR LOCK CONTROL ECU (BEHIND INSTRUMENT CLUSTER) TSW WHT/BLK WIRE WHT/RED WIRE