Lexus IS II facelift (2008-2010) junction connector Wiring diagrams

BACKUP LIGHT BKUP BLK WIRE BLU/RED WIRE ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GRN WIRE HOT AT ALL TIMES HOT W/ LH-IG 1 RELAY ENERGIZED JUNCTION CONNECTOR LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT MAIN BODY ECU MPXB LEFT REAR COMBINATION LIGHT ASSEMBLY LH-IG FUSE MPX-B FUSE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (TRANSMISSION ASSEMBLY) RED WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT REAR COMBINATION BACKUP LIGHT LIGHT ASSEMBLY SGND WHT WIRE YEL WIRE

1 2 3 +B SI GND 13 14 COMPUTER CANL CANH DATA LINES SYSTEM 13 26 38 PRE 30 31 COMPUTER MPX+ MPX- DATA LINES SYSTEM A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) A/C PRESSURE SENSOR (LEFT SIDE OF RADIATOR) BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COOLING FAN ECU (BEHIND LEFT RADIATOR COOLING FAN MOTOR) COOLING FAN ECU 2 (BEHIND RIGHT RADIATOR COOLING FAN MOTOR) COOLING FAN MOTOR COOLING FAN MOTOR 2 ECM (ENGINE CONTROL MODULE) (LEFT FRONT OF ENGINE COMPT) EFI ENGINE COOLANT TEMPERATURE SENSOR (TOP OF ENGINE) ENGINE ROOM FAN 1 FAN 2 J/B 1 FUSE FUSE (RIGHT REAR OF ENGINE COMPT) FAN RELAY 1 FAN RELAY 2 GRN/YEL WIRE HOT AT ALL TIMES HOT W/ LH-IG 1 RELAY ENERGIZED LEFT COWL SIDE J/B LH-IG (LEFT FUSE END OF DASH) JUNCTION CONNECTOR PNK SG-2 WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RFC VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/GRN WIRE

+BM 21 13 14 15 TC CANL CANH CCS 29 20 23 28 21 22 1 VPA EPA VCPA BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ECM (ENGINE CONTROL MODULE) (LEFT FRONT OF ENGINE COMPT) EFI FUSE EFI MAIN RELAY ENGINE ROOM ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) ETCS FUSE R/B 2 (LEFT SIDE OF ENGINE COMPT) GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT W/ LH-IG 1 RELAY ENERGIZED HOT W/ RH-IG 1 RELAY ENERGIZED IGN FUSE JUNCTION JUNCTION CONNECTOR LEFT COWL SIDE J/B LH-IG FUSE (LEFT END OF DASH) LT GRN WIRE M- M+ ETA NCA WIRE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (TRANSMISSION ASSEMBLY) PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RELAY ENERGIZED RH-IG FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) SFTD SFTU STOP LIGHT SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) STOP SW FUSE THROTTLE BODY ASSEMBLY (TOP OF ENGINE) VCTA VTA VIO WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

BLK WIRE BRN WIRE CIRCUIT COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH CRUISE IND ENGINE ROOM GRN/RED WIRE GRY WIRE HOT AT ALL TIMES INPUT CIRCUIT JUNCTION JUNCTION CONNECTOR LCD (MULTI) LEFT PADDLE SHIFT SWITCH LT GRN WIRE MICRO COMPUTER MPX MPX-B FUSE R/B 1 (RIGHT REAR OF ENGINE COMPT) ON OFF ORG/ WIRE PADDLE SHIFT SWITCH PNK WIRE RED WIRE RED/BLK WIRE RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGHT END OF DASH) GAUGE FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT PADDLE SHIFT SWITCH SPEEDOMETER SPIRAL CABLE (UNDER STEERING WHEEL) STEERING PAD SWITCH ASSEMBLY SUPPLY POWER TRANSMISSION FLOOR SHIFT ASSEMBLY VIO WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

+IG A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE BRN/RED WIRE COMBINATION METER ASSEMBLY DOME+B ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GAUGE FUSE GND TR TL GRN RED/ WIRE GRN WIRE GRN/ LT WIRE GRN/RED WIRE GRY WIRE HEAD AUTO HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT W/ IG 2 RELAY ENERGIZED HOT W/ LH-IG 1 RELAY ENERGIZED INPUT CIRCUIT JUNCTION JUNCTION CONNECTOR LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT MAIN BODY ECU LH TURN IND LH-IG FUSE LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MICRO COMPUTER MPX MPX+ MPX- MPX-B FUSE NETWORK GATEWAY ECU (RIGHT END OF DASH) OFF TAIL ORG/ WIRE PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) POWER SUPPLY CIRCUIT RED GRN/ WIRE RED WIRE RH TURN IND RIGHT COWL SIDE J/B (RIGHT END OF DASH) TAIL IND (EXCEPT USA) TURN SWITCH WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

AUTOMATIC LIGHT CONTROL SENSOR (BEHIND LEFT SIDE OF DASH) BATB BLK WIRE BLK/ WHT WIRE BLK/YEL WIRE BLU LT WIRE BLU WIRE BRN WIRE CLTB CLTE CLTS ECU-IG RH FUSE EL ER ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) FRONT CONTROLLER ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) FR DOOR RH FUSE FR TAIL RELAY FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES FR TAIL FUSE HOT W/ ACC RELAY ENERGIZED HOT W/ LH-IG 1 RELAY ENERGIZED HOT W/ RH-IG 1 RELAY ENERGIZED JUNCTION JUNCTION CONNECTOR LCTY LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT HEADLIGHT ASSEMBLY LH-IG FUSE LR LL LT BLU WIRE LT GRN WIRE MARKER MPX-B FUSE OCTY OF DASH) ORG/ WIRE PARKING TURN PCTY PNK WIRE RCTY RED WIRE RIGHT COWL SIDE J/B (RIGHT END RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT HEADLIGHT ASSEMBLY RIGHT MAIN BODY ECU TI, TE FUSE TURN SIGNAL FLASHER TURN, HAZ FUSE VIO WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

BACKUP BACKUP LAMPS CIRCUIT BLK/ WHT WIRE BLU WIRE BLU/WHT WIRE BRK-LP RELAY BRN WIRE ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) ENGINE ROOM R/B 3 (LEFT REAR OF ENGINE COMPT) GRN WIRE HOT AT ALL TIMES HOT W/ LH-IG 1 RELAY ENERGIZED LEFT COWL SIDE J/B (LEFT END OF DASH) LH- IG FUSE JUNCTION CONNECTOR LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT LICENSE PLATE LIGHT ASSEMBLY LEFT REAR COMBINATION LIGHT ASSEMBLY LH J/B-AM FUSE LT GRN WIRE MARKER IND NOISE FILTER (STOP LIGHT) (LEFT SIDE OF TRUNK) PNK 8 6 4 2 OUT +B GND STP WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT COWL RIGHT LICENSE PLATE LIGHT ASSEMBLY RIGHT REAR COMBINATION LIGHT ASSEMBLY SKID CONTROL ECU (BEHIND RIGHT SIDE OF DASH) STOP CENTER LIGHT SET STOP LIGHT CONTROL RELAY (BEHIND CENTER OF DASH) STOP LIGHT SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) STOP SW FUSE SIDE J/B (RIGHT END OF DASH) STOP/ TAIL IND STOP/ TAIL MARKER IND IND STP TL TAIL FUSE TAIL IND TAIL RELAY TRN+ TURN WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

A/F RELAY BLK WIRE BRAKE FLUID LEVEL WARNING SWITCH (BRAKE MASTER CYLINDER RESERVOIR ASSEMBLY) BRAKE PEDAL LOAD SENSING SWITCH ECM (ENGINE CONTROL MODULE) EFI 2 RELAY EFI MAIN RELAY ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT) FRONT BLOWER W/ FAN MOTOR SUB- ASSEMBLY FRONT CONTROLLER HEADLIGHT SWIVEL ECU ASSEMBLY JUNCTION JUNCTION CONNECTOR LEVEL WARNING SWITCH COMPRESSOR ASSEMBLY ASSEMBLY NOISE FILTER (GHOST BUSTER) POWER STEERING ECU ASSEMBLY RADIO RECEIVER ASSEMBLY RELAY SKID BRAKE CONTROL ACTUATOR ECU ASSEMBLY ASSEMBLY SKID CONTROL ECU ASSEMBLY ST CUT RELAY STEREO COMPONENT AMPLIFIER ASSEMBLY STEREO JACK ADAPTER ASSEMBLY 1 SHIELD TRANSMISSION KICK DOWN CONTROL SWITCH ECU ASSEMBLY ASSEMBLY VVT LH RELAY VVT RH RELAY WHT/BLK WIRE WINDSHIELD HEADLIGHT WASHER CLEANER MOTOR, CONTROL PUMP RELAY ASSEMBLY WINDSHIELD WIPER MOTOR ASSEMBLY WIRELESS DOOR LOCK BUZZER

A/C AMPLIFIER ASSEMBLY CENTER AIR BAG SENSOR ASSEMBLY CIGARETTE LIGHTER ASSEMBLY CLOCK ASSEMBLY COMBINATION METER ASSEMBLY CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY DATA LINK CONNECTOR (DLC) 3 FROM RIGHT COWL SIDE J/B (DIAGRAM 3 OF 7) GLOVE BOX LIGHT ASSEMBLY INTEGRATION CONTROL, PANEL ASSEMBLY JUNCTION CONNECTOR LEFT COWL SIDE J/B LEFT MAIN BODY ECU MULTIPLEX TILT, TELESCOPIC ECU NETWORK GATEWAY ECU PATTERN SELECT SWITCH ASSEMBLY 1 RELAY SATELLITE SWITCH SET SEAT HEATER SWITCH SHIFT LOCK CONTROL ECU SUB-ASSEMBLY STEERING LOCK ACTUATOR ASSEMBLY STEERING SENSOR STOP LIGHT CONTROL RELAY ASSEMBLY TIRE PRESSURE WARNING ECU, RECEIVER TURN SIGNAL FLASHER ASSEMBLY VSC OFF SWITCH W/ NAVIGATION W/O NAVIGATION WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YAW RATE SENSOR

BRN WIRE FUEL LID W/ MOTOR LOCK ASSEMBLY FUEL SENDER GAUGE ASSEMBLY JUNCTION JUNCTION CONNECTOR LEFT FRONT DOOR ELECTRICAL KEY OSCILLATOR LEFT FRONT LUMBAR POWER SEAT SWITCH LEFT FRONT POSITION CONTROL ECU, SWITCH ASSEMBLY LEFT FRONT SEAT INNER BELT ASSEMBLY LEFT LICENSE PLATE LIGHT ASSEMBLY LEFT OUTER REAR VIEW MIRROR ASSEMBLY LEFT REAR COMBINATION LIGHT ASSEMBLY LEFT REAR DOOR W/ MOTOR LOCK ASSEMBLY LEFT REAR LIGHT ASSEMBLY LEFT REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LEFT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LEFT SEAT BACK CLIMATE CONTROL BLOWER LEFT SEAT CUSHION CLIMATE CONTROL BLOWER LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY LUGGAGE COMPARTMENT DOOR LOCK CYLINDER LUGGAGE ELECTRICAL KEY SWITCH POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY RIGHT REAR COMBINATION LIGHT ASSEMBLY RIGHT REAR LIGHT ASSEMBLY SEAT BELT CONTROL ECU STOP CENTER LIGHT SET W/ CLIMATE CONTROL SEAT W/ W/O CLIMATE CLIMATE CONTROL CONTROL SEAT SEAT W/O CLIMATE CONTROL LEFT SEAT SEAT HEATER CONTROL SUB- ASSEMBLY WHT/BLK WIRE YEL WIRE