Lexus IS II facelift (2008-2010) micro computer Wiring diagrams

25 14 11 CANH CANL BLK WIRE BLU/WHT WIRE BRN WIRE CIRCUIT COMBINATION METER COMPUTER DATA LINES SYSTEM COMPUTER RIGHT COWL DATA LINES SIDE J/B SYSTEM (RIGHT END OF DASH) DOME+B ECU (RIGHT KICK PANEL) ECU-IG RH FUSE ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (ON TRANSMISSION) ENGINE ROOM R/B 1 FREE GAUGE FUSE GRN WIRE GRN/RED WIRE HOT AT ALL TIMES HOT W/ IG 2 RELAY ENERGIZED IND INPUT CIRCUIT LT GRN WIRE MASTER MICRO COMPUTER MPX MPX-B FUSE (RIGHT REAR OF ENGINE COMPT) ORG/ WIRE PNK COMPUTER DATA LINES SYSTEM WIRE PNK WIRE PNK/BLU WIRE POWER SOURCE CONTROL ECU (RIGHT SIDE OF DASH) RED WIRE RELAY RIGHT COWL SIDE J/B (RIGHT END OF DASH) SKID CONTROL ECU (W/ ACTUATOR) (LEFT REAR OF ENGINE COMPT) SLC+ SLC+ CANH SLIP SPEEDOMETER SUPPLY POWER VIO WIRE VIO/YEL WIRE WHT/BLK WIRE YEL WIRE

+BM BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM ECT PWR IND ECT SNOW IND ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) ETHA GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES IG 2 OR DOME+3 INPUT CIRCUIT LT GRN WIRE MASS AIR FLOW METER (RIGHT SIDE OF ENGINE COMPT) MICRO COMPUTER MPX MPX-B FUSE NCA WIRE ORG/ WIRE PNK WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT COWL PANEL J/B (RIGHT END OF DASH) SIDE OF ENGINE COMPT) SPEEDOMETER SUPPLY POWER TACHOMETER THA THROTTLE BODY ASSEMBLY VIO WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

14 13 CANH CANL ALT FUSE BATTERY BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE CHARGE INDICATOR COMBINATION METER ASSEMBLY +IG COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) GAUGE FUSE GENERATOR ASSEMBLY IG GRN/RED WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B 1 (RIGHT REAR OF ALT-S FUSE ENGINE COMPT) HOT AT ALL TIMES ENGINE ROOM R/B 1 DOME FUSE (RIGHT REAR OF ENGINE COMPT) INPUT CIRCUIT LEFT COWL SIDE J/B (LEFT END OF DASH) LH-IG FUSE LT GRN WIRE MICRO COMPUTER MPX+ MPX- MPX-B FUSE NETWORK GATEWAY ECU ORG/ WIRE PNK ALT WIRE PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) POWER SUPPLY CIRCUIT RELAY RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT END OF DASH) STARTER ASSEMBLY WHT WIRE WHT/BLK WIRE YEL WIRE

1 3 2 SIG ES MPX 21 39 36 37 40 23 IG GND MPX AUTO BLK WIRE BLU WIRE BLU/ORG WIRE BRN WIRE CIRCUIT INPUT COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM WINDSHIELD WASHER MOTOR, PUMP ASSEMBLY (WASHER ENGINE ROOM ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) FR WIP FUSE FRONT CONTROLLER GAUGE FUSE GRN WIRE GRN/RED WIRE GRY WIRE HEAD HEADLAMP WASHER CIRCUIT HOT AT ALL TIMES HOT IN ON OR START IG+ 12 13 POWER SUPPLY ES J/B 2 (LEFT SIDE OF ENGINE COMPT) LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT MAIN BODY ECU LH ECU-IG FUSE LH-IG 2 RELAY LT GRN WIRE MICRO COMPUTER MIST MPX+ MPX- 6 18 MPX-B FUSE OFF ORG/ WIRE OVERHEAD MODULE (CENTER FRONT OF ROOF) PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) (UNDER CENTER CONSOLE) RAIN SENSOR (TOP CENTER OF FRONT WINDSHIELD) RED/BLU WIRE RESERVOIR) RH ECU-IG FUSE RH-IG 1 RELAY RIGHT COWL SIDE J/B (RIGHT END OF DASH) S/S +2 S/M SWITCH WASH RELAY WASHER WASHER FUSE WHT WIRE WHT/BLK WIRE WIG WINDSHIELD WIPER MOTOR ASSEMBLY (BELOW LOWER LEFT SIDE OF WINDSHIELD) WINDSHIELD WIPER SWITCH ASSEMBLY WIPER SWITCH YEL WIRE

26 14 BECU DCTY 29 37 38 39 27 28 RCO ASEL RDA RSSI 7 6 5 3 4 2 ANT GND RSSI DATA ASEL AUTO BLK WIRE BLU WIRE BODY ECU RIGHT COWL SIDE J/B (RIGHT END OF DASH) BRN WIRE BZR CERTIFICATION ECU (RIGHT SIDE OF TRUNK) CHK UP DWN CLS CLS OPN COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DOME +B DOOR CONTROL RECEIVER 2 (RIGHT REAR CORNER OF TRUNK) DOWN ECU-IG LH FUSE ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GAUGE FUSE GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES INPUT CIRCUIT KUL KUL LEFT FRONT DOOR LOCK ASSEMBLY (REAR OF LEFT FRONT DOOR) LCD (MULTI) LEFT COWL SIDE J/B (LEFT END OF DASH) LT BLU WIRE LT GRN WIRE MASTER IND MICRO COMPUTER MPX MPX+ MPX- MPX-B FUSE NCA WIRE OF ROOF) OPN ORG/ WIRE OVERHEAD MODULE (CENTER FRONT POWER SUPPLY CIRCUIT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY PUSH RED WIRE RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGHT END OF DASH) S/ROOF FUSE SLIDING ROOF CONTROL ECU (CENTER FRONT OF ROOF) SLIDING ROOF SWITCHES VIO WIRE WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (LEFT SIDE OF ENGINE COMPT) YEL WIRE

+B PGND 1 2 3 4 5 6 7 8 CAN H CAN L 22 23 13 8 9 LRDD LRRD IGB CAN H CAN L 6 18 MPX+ MPX- COMPUTER DATA LINES SYSTEM 8 16 COMPUTER DATA LINES SYSTEM CAN H CAN L BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DISTANCE CONTROL ECU (BEHIND LEFT SIDE OF DASH) ECU-IG RH FUSE GRY WIRE HOT AT ALL TIMES LEFT COWL SIDE J/B (LEFT END OF DASH) PSB FUSE HOT W/ IG 2 RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGHT END OF DASH) GAUGE FUSE HOT W/ RH-IG 1 RELAY ENERGIZED INPUT CIRCUIT JUNCTION CONNECTOR LEFT FRONT PRE-COLLISION SEAT BELT MOTOR (BASE OF LEFT "B" PILLAR) LT BLU WIRE LT GRN WIRE MICRO COMPUTER MILLIMETER WAVE RADAR SENSOR (BEHIND CENTER OF FRONT GRILLE) MOR- MOR+ MOL+ MOL- ORG/ WIRE PCS IND PNK COMPUTER DATA LINES SYSTEM WIRE PNK IGB LRRD LRDD WIRE POWER SUPPLY CIRCUIT RED WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT FRONT PRE-COLLISION SEAT BELT MOTOR (BASE OF RIGHT "B" PILLAR) SEAT BELT CONTROL ECU (LEFT SIDE OF TRUNK) SKID CONTROL ECU (BEHIND RIGHT SIDE OF DASH) WHT WIRE WHT/BLK WIRE

+IG 11 12 DBE+ DBE- 13 12 FSR- FSR+ 13 22 CANH CANL 2 1 3 PS GPS VPS 30 31 MPX+ MPX- 7 15 6 14 13 11 12 VPS GPS PS BGND BSW FSR+ FSR- A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE BRN/RED WIRE BUCKLE SWITCH CENTER AIR BAG SENSOR (UNDER REAR OF CENTER CONSOLE) CLOCK ASSEMBLY COMBINATION PBLT METER ASSEMBLY COMPUTER DATA LINES SYSTEM DCTY DRIVER'S SEAT BELT IND ECU-IG RH FUSE GAUGE FUSE GRN WIRE GRY WIRE GTX+ GTX- HEADLIGHT SWIVEL ECU (LEFT KICK PANEL) HOT AT ALL TIMES ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) IG 2 IG+ IG+ INPUT CIRCUIT INTEGRATION CONTROL, PANEL ASSEMBLY LCD (MULTI) LEFT FRONT SEAT INNER BELT ASSEMBLY (UNDER DRIVER'S SEAT) LT BLU WIRE LT GRN WIRE MAIN BODY ECU MICRO COMPUTER MPX+ MPX- MPX-B FUSE NETWORK GATEWAY ECU (RIGHT END OF DASH) OCCUPANT DETECTION ECU (UNDER FRONT PASSENGER'S SEAT) OCCUPANT DETECTION SENSOR ORG/ WIRE PBEW PBEW PNK PNK WIRE PNK WIRE POWER SUPPLY CIRCUIT RED WIRE RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT COWL SIDE J/B (RIGHT END OF DASH) COMPUTER DATA LINES SYSTEM RIGHT FRONT SEAT INNER BELT ASSEMBLY (UNDER RIGHT FRONT SEAT) W/O W/ NAVIGATION NAVIGATION WHT WIRE YEL WIRE

23 13 22 8 9 LRRD IGB LRDD CANH CANL PNK WIRE 3 5 4 LRDD IGB LRRD PNK WIRE 5 3 2 IG CANH CANL PNK WIRE 8 16 11 CANH CANL BZ ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BUCKLE SWITCH RIGHT FRONT SEAT INNER BELT ASSEMBLY (UNDER RIGHT FRONT SEAT) COMBINATION METER ASSEMBLY SI COMPUTER DATA LINES SYSTEM DISTANCE CONTROL ECU (BEHIND LEFT SIDE OF DASH) ECU-IG LH FUSE GBT GND PS VPS GBT IG DIA FSR+ FSR- BSW BGND GPS BT VBT GPS GRN WIRE GRY WIRE HOT AT ALL TIMES IG+ ES INPUT CIRCUIT LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT COWL SIDE J/B (LEFT END RELAY OF DASH) LT GRN WIRE MICRO COMPUTER MILLIMETER WAVE RADAR SENSOR (BEHIND CENTER OF FRONT GRILLE) MPX+ MPX- OCCUPANT CLASSIFICATION SENSOR OCCUPANT DETECTION ECU (UNDER FRONT PASSENGER'S SEAT) ORG/ WIRE PBLT PNK VBT WIRE PNK WIRE POWER SUPPLY CIRCUIT RED WIRE SEAT BELT TENSION SENSOR (BASE OF RIGHT "B" PILLAR) SKID CONTROL BUZZER ASSEMBLY (BEHIND LEFT SIDE OF DASH) SKID CONTROL ECU (BEHIND RIGHT SIDE OF DASH) SRS IND STEERING SENSOR (UNDER LEFT SIDE OF DASH) VIO WIRE VPS WHT WIRE WHT/BLK WIRE YAW RATE SENSOR (UNDER CENTER CONSOLE) YEL WIRE

+IG 1 2 3 4 5 6 7 8 9 IG 30 31 COMPUTER MPX+ MPX- DATA LINES SYSTEM 6 5 COMPUTER DATA LINES SYSTEM A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) ANFR ANRL BLK WIRE BRN WIRE BRN/RED WIRE COMBINATION INT INT METER ASSEMBLY COMPUTER DATA LINES COMPUTER DATA LINES GTX+ GTX- SYSTEM COMPUTER DATA LINES SYSTEM DOME+B ECU-IG LH FUSE GAUGE FUSE GRN WIRE GRY WIRE HEADLIGHT SWIVEL ECU (LEFT KICK PANEL) HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) INPUT CIRCUIT LCD (MULTI) LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT COWL SIDE J/B (LEFT END OF DASH) (BEHIND LEFT SIDE OF DASH) LEFT REAR TIRE PRESSURE WARNING ANTENNA (LEFT REAR WHEELWELL) LSEL RSEL SET LT BLU WIRE LT GRN WIRE MICRO COMPUTER MPX+ MPX- MPX-B FUSE NCA WIRE NETWORK GATEWAY ECU (RIGHT END OF DASH) ORG/ WIRE PNK CLSW IDSW GND WIRE PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) POWER SUPPLY CIRCUIT RED WIRE RELAY RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT FRONT TIRE PRESSURE WARNING ANTENNA (RIGHT FRONT WHEELWELL) SATELLITE RSEL LSFT SET SWITCH SET SYSTEM TIRE PRESSURE IND MASTER IND TIRE PRESSURE WARNING ECU, RECEIVER VIO WIRE WHT WIRE WHT/BLK WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BODY ECU (RIGHT END OF DASH) BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DOME FUSE ECT PWR IND ECT SNOW IND ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE OIL LEVEL SENSOR (BOTTOM OF ENGINE) GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) INDICATOR MALFUNCTION INPUT INPUT CIRCUIT CIRCUIT LAMP LEFT COWL SIDE J/B (LEFT END OF DASH) LT BLU WIRE LT GRN WIRE MASTER IND MICRO COMPUTER MICRO COMPUTER (SUB) MPX- EFI MPX+ MPX-B FUSE MULTI-INFORMATION DISPLAY NCA WIRE ORG/ WIRE PNK WIRE PNK/BLU WIRE POWER SUPPLY CIRCUIT PWR RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) SIDE OF ENGINE COMPT) SNOW SPEEDOMETER TACHOMETER VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE