Lexus SC I (1991-2001) relay block 2 (on left side of engine compt, behind battery) 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

BLK WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE COMBINATION METER GRN/WHT WIRE HAZ-HORN FUSE HORN RELAY HOT AT ALL TIMES JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH LT GRN WIRE LUGGAGE COMPARMENT DOOR OPENER MOTOR (CENTER REAR OF TRUNK) LUGGAGE COMPARTMENT DOOR OPEN SWITCH LUGGAGE COMPARTMENT KEY UNLOCK SWITCH (RIGHT REAR OF TRUNK) PNK WIRE RED WIRE RED/WHT WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RIGHT LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH THEFT DETERRENT HORN (LEFT REAR OF ENG COMPT) TRIP SWITCH, THEFT DETERRENT INDICATOR SWITCH UNLOCK WARNING SWITCH (IGNITION SWITCH) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/RED WIRE BLU RED/ WIRE BLU WIRE BLU/RED WIRE DEF FUSE DEFOGGER RELAY HEATER HOT AT ALL TIMES HOT IN ON OR START HTR FUSE JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) LEFT REMOTE CONTROL MIRROR MIR HTR FUSE NOISE FILTER (AT LEFT SIDE OF ENGINE COMPT, NEAR FUSE BLOCK) RDFGR REAR WINDOW DEFOGGER REAR WINDOW DEFOGGER SWITCH (A/C CONTROL ASSEMBLY) RED WIRE RED/ BLU WIRE RED/BLU WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RIGHT REMOTE CONTROL MIRROR WHT/ BLK WIRE WHT/BLK WIRE YEL/RED WIRE

BLK WIRE COMBINATION METER COMBINATION SWITCH TURN SIGNAL SWITCH GRN WIRE GRN/BLK WIRE GRN/YEL WIRE HAZ-HORN FUSE HAZARD SWITCH HOT AT ALL TIMES HOT IN RUN I9 (3.0L) (DASH HARN, TOP CENTER OF DASH) JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) LEFT FRONT PARKING LIGHT LEFT FRONT SIDE MARKER LIGHT LEFT FRONT TURN LIGHT LEFT TURN SIGNAL IND LT GRN WIRE RED WIRE RED/BLK WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RELAY BLOCK 4 (BEHIND LEFT KICK PANEL, ON FRONT SIDE OF JUNCTION BLOCK 1) RIGHT FRONT PARKING LIGHT RIGHT FRONT SIDE MARKER LIGHT RIGHT FRONT TURN LIGHT RIGHT LEFT RIGHT TURN SIGNAL IND TURN FUSE TURN SIGNAL FLASHER WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

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 7 8 9 10 11 12 13 14 15 16 17 18 SO DSW 1 2 3 4 5 6 7 8 9 10 11 12 IG TEM+ TIM- +B ASW AUTO SW BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DASH HARN, BEHIND COMBINATION METER) DOME FUSE DRIVER'S POWER SEAT ECU (UNDER DRIVER'S SEAT) DRIVER'S POWER SEAT ECU SHIELD DRIVING POSITION MEMORY, RETURN SWITCH (LEFT SIDE OF DASH) ECU-IG FUSE GAUGE FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN START OR RUN JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT DOOR LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH MANUAL SW MSW VC ECU-B NCA WIRE P (PKB) GND PARK/NEUTRAL POSITION SWITCH (ON TRANSMISSION) PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) REMOTE CONTROL MIRROR ECU (BEHIND LEFT CENTER OF DASH) SET- SI SO SSR- TELESCO LONG TELESCO SHORT TELESCOPIC CONTROL MOTOR TELESCOPIC POSITION SENSOR TELESCOPIC POSITION SENSOR (BEHIND LEFT SIDE OF DASH) TES TIS ECUE SO UWSW MRY TILT CONTROL MOTOR TILT DOWN TILT POSITION SENSOR TILT UP TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) TILT, POWER TELESCOPIC UNIT (COMBINATION SWITCH) TIM+ TEM- UNLOCK WARNING SWITCH (IGNITION SWITCH) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

1 2 3 7 8 10 SVCC SIG SGND SOLID STATE 11 6 4 14 2 5 6 7 8 ANT+B IG GND 12 13 3 1 2 3 ANTB ANTA +B AUTO ANTENNA CONTROL RELAY AUTO ANTENNA MOTOR AUTO ANTENNA MOTOR, RELAY (AT LEFT SIDE OF LUGGAGE COMPARTMENT) BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DOWN ECU-IG FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN START OR ON JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) PIONEER PNK/BLK WIRE RADIO 1 FUSE RADIO 2 FUSE RADIO, PLAYER RED WIRE RED/GRN WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) SENSOR WHT/BLK WIRE YEL WIRE YEL/RED WIRE

3.0L 4.0L ABS MTR RELAY ABS SOL RELAY ALT FUSE (3.0L) (4.0L) BATTERY BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE DATA LINK CONNECTOR 3 DOME FUSE ENGINE CONTROL MODULE, PARK/NEUTRAL POSITION SWITCH FOG FUSE FOGLIGHT RELAY FUSE GENERATOR HAZ-HORN FUSE HORN RELAY, HAZARD SWITCH, THEFT DETERRENT HORN IG SW FUSE IGNITION MAIN RELAY IGNITION SWITCH INJ FUSE INTEGRATION RELAY JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LOCK MAIN FUSE NCA WIRE OBD FUSE RADIO 1 FUSE RADIO 2 FUSE RED WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) REMOTE CONTROL MIRROR ECU REMOTE CONTROL MIRROR SWITCH SEAT HTR FUSE ST FUSE STARTER STEREO POWER AMPLIFIER, RADIO, PLAYER, AUTO ANTENNA MOTOR, RELAY, D/A CONVERTER TO CIG FUSE, JUNCTION BLOCK 1 (DIAGRAM 2 OF 3) TO DAYTIME RUNNING LIGHT RELAY 2 (DIAGRAM 3 OF 3) TO DEF FUSE, RELAY BLOCK 2 (DIAGRAM 3 OF 3) TO DOOR FUSE, JUNCTION BLOCK 1 (DIGRAM 2 OF 3) TO EFI FUSE RELAY BLOCK 2 (DIAGRAM 3 OF 3) TO GAUGE FUSE, JUNCTION BLOCK 1 (DIAGRAM 2 OF 3) TO IGN FUSE, JUNCTION BLOCK 1 (DIAGRAM 2 OF 3) WHT WIRE WHT/BLU WIRE WHT/RED WIRE

ALT SENSING FUSE BLK WIRE BLK/RED WIRE BLK/WHT WIRE DAYTIME RUNNING LIGHT RELAY 2 (BEHIND LEFT HEADLAMP) DAYTIME RUNNING LIGHT RELAY 3 DEF FUSE DEF RELAY EFI FUSE EFI MAIN RELAY ENGINE CONTROL MODULE ETCS FUSE FOGLIGHT RELAY, LEFT LOW BEAM HEADLIGHT FROM ALT FUSE, FUSE BLOCK (DIAGRAM 1 OF 3) FROM HAZ-HORN FUSE RELAY BLOCK 2 (DIGRAM 1 OF 3) FROM MAIN FUSE, RELAY BLOCK 2 DIAGRAM 1 OF 3) FROM TEL FUSE, RELAY BLOCK 2 (DIAGRAM 3 OF 3) GENERATOR HEAD (LH-UPR) FUSE DRL FUSE HEAD FUSE (LH-LWR) HEAD FUSE (RH-LWR) HEAD LH UPR FUSE HEAD RH UPR FUSE HEADLIGHT RELAY HTR FUSE HTR RELAY JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT HI BEAM HEADLIGHT LEFT HI BEAM HEADLIGHT DAYTIME RUNNING LIGHT RELAY 4 LEFT, RIGHT MIRROR HEATER, ENGINE CONTROL MODULE MIRHTR FUSE NOISE FILTER REAR WINDOW DEFOGGER RED WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RIGHT LOW BEAM HEADLIGHT, COMBINATION METER STARTER STARTER RELAY TEL FUSE TELEPHONE TRANSCEIVER/ SPEAKER RELAY TO HEADLIGHT RELAY, RELAY BLOCK 2 (DIAGRAM 3 OF 3) WHT 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