Lexus IS III (2013-2016) micro computer Wiring diagrams

1 3 9 10 2 IG BAT CANL CANH ESS 4 3 2 1 IG CANH CANL GND PNK WIRE 5 6 SPDL SPDR ABS IND. BLK WIRE BLU WIRE BLU/WHT WIRE BRAKE FLUID LEVEL WARNING SWITCH (BRAKE FLUID RESERVOIR) BRAKE IND BRK-LP RELAY BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DOME +B ECU-IG LH FUSE ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT) GRN/WHT WIRE GRY WIRE HEADLIGHT LEVELING ECU (LEFT KICK PANEL) HOT IN ON OR START IND MASTER INPUT CIRCUIT LCD (MULTI) LEFT COWL SIDE J/B (LEFT END OF DASH) LH-IG FUSE LT GRN WIRE MICRO COMPUTER MPX OF DASH) ORG/ WIRE OUT STP PNK 8 2 WIRE PNK WIRE POWER SUPPLY CIRCUIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT COWL SIDE J/B (RIGHT END SLIP IND SLIP OFF IND STEERING SENSOR (UNDER LEFT SIDE OF DASH) STOP LAMP CONTROL RELAY ASSEMBLY SWITCH TRAC OFF IND VIO WIRE WHT WIRE WHT/BLK WIRE YAW RATE SENSOR (UNDER CENTER CONSOLE) YEL WIRE

+BM 2.5L BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CRUISE IND DOME +B ECU-IG LH FUSE ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 1 ENGINE ROOM R/B 2 ETCS FUSE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES INPUT CIRCUIT LEFT COWL SIDE J/B LH-IG FUSE LT GRN WIRE MICRO COMPUTER MPX MPX-B FUSE NCA WIRE ORG/ WIRE PNK WIRE POWER SUPPLY RED WIRE RIGHT COWL SIDE J/B RIGHT END OF DASH) SPEEDOMETER THROTTLE W/ MOTOR BODY ASSEMBLY (REAR OF ENGINE) TRANSMISSION CONTROL SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

+BM 2.5L BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CRUISE IND DOME +B ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 1 ENGINE ROOM R/B 2 ETCS FUSE GRN/RED WIRE HOT AT ALL TIMES INPUT CIRCUIT LEFT COWL SIDE J/B LH-IG FUSE LT GRN WIRE MICRO COMPUTER MPX MPX-B FUSE NCA WIRE ORG/ WIRE PNK WIRE POWER SUPPLY RIGHT COWL SIDE J/B RIGHT END OF DASH) SPEEDOMETER THROTTLE W/ MOTOR BODY ASSEMBLY (REAR OF ENGINE) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

+IG BLK WIRE BLU WIRE BRN WIRE CERTIFICATION ECU (RIGHT SIDE OF TRUNK) COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM 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 HAZARD SWITCH HEAD AUTO HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT W/ LH-IG 1 RELAY ENERGIZED INPUT CIRCUIT JUNCTION 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-B FUSE NETWORK GATEWAY ECU (RIGHT END OF DASH) OFF OFF TAIL ORG/ WIRE PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) POWER SUPPLY CIRCUIT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY RED GRN/ WIRE RED WIRE RELAY ENERGIZED RH TURN IND RIGHT COWL SIDE J/B (RIGHT END OF DASH) TAIL TAIL IND (EXCEPT USA) TURN SWITCH WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY 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 LEVEL WARNING SWITCH 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 VIO WIRE 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

+IG 4 6 7 5 HEAD AUTO BATB BLK WIRE BLU WIRE BRN WIRE CLTB CLTE CLTS COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DCTY DIMMER SWITCH DOME +B DRL OFF IND ECU-IG RH FUSE FLASH LOW FOG SWITCH FR DOOR RH FUSE FRONT FOG IND BEAM IND FUSE GAUGE FUSE GRN WIRE GRN/RED WIRE GRY WIRE HEAD HEAD AUTO HEAD CLTB CLTS CLTE HEAD IND (USA) HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM MPX-B R/B 1 FUSE (RIGHT REAR OF ENGINE COMPT) HOT IN ON OR ACC HOT IN ON OR START HU HF INPUT CIRCUIT LCTY LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH (LEFT "B" PILLAR) LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MICRO COMPUTER MPX+ MPX- OFF TAIL ORG/ WIRE POWER SUPPLY CIRCUIT RCTY PCTY REAR FOG IND RED WIRE RED/WHT WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT MAIN BODY ECU RIGHT REAR DOOR COURTESY LIGHT SWITCH (RIGHT "C" PILLAR) TAIL TI, TE FUSE TO LEFT COWL SIDE J/B (DIAGRAM 2 OF 2) WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL/BLK WIRE

1 2 3 PNK WIRE 4 5 6 7 8 9 PNK WIRE BLK WIRE BLU WIRE BLU/RED WIRE BRN WIRE CLG CLGB COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DATA DOME +B DOOR CONTROL RECEIVER (CENTER FRONT OF TRUNK) ECU-IG RH FUSE FUSE GRN WIRE GRN/RED WIRE HOT AT ALL TIMES HOT W/ ACC RELAY ENERGIZED INPUT CIRCUIT J/C LCD (MULTI) LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT FRONT DOOR ELECTRICAL KEY OSCILLATOR (FRONT LEFT DOOR) LEFT MAIN BODY ECU LH-IG 1 RELAY LH-IG FUSE LT GRN WIRE MASTER IND MICRO COMPUTER MPX MPXB ORG/ WIRE OUTSIDE LEFT FRONT DOOR HANDLE ASSEMBLY PARK/ NEUTRAL POSITION SWITCH (TRANSMISSION ASSEMBLY) PNK WIRE POWER SUPPLY CIRCUIT RED WIRE RH-IG 1 RELAY RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT FRONT DOOR ELECTRICAL KEY OSCILLATOR (RIGHT FRONT DOOR) RIGHT MAIN BODY ECU RSSI SEL SENS SGT TRG+ VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

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

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 10 VPS GPS PS BGND BSW FSR+ FSR- DIA A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) BELT BUCKLE ASSEMBLY) BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BRN WIRE BUCKLE SWITCH CENTER AIR BAG SENSOR (UNDER REAR OF CENTER CONSOLE) CLOCK ASSEMBLY COMBINATION PBLT P/SB METER ASSEMBLY COMPUTER DATA LINES SYSTEM DCTY DOME +B DOOR IND DRIVER'S SEAT BELT IND ECU-IG RH FUSE GAUGE FUSE GRN WIRE GRY WIRE GTX+ GTX- 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 (IN DRIVER'S SEAT BELT BUCKLE ASSEMBLY) 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 SENSOR ORG/ WIRE PASSIVE RESTRAINT SYSTEM 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 (IN FRONT PASSENGER'S SEAT W/O W/ NAVIGATION NAVIGATION WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 IG 30 31 COMPUTER MPX+ MPX- DATA LINES SYSTEM A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) ANFR ANRL BLK WIRE BRN 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 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 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