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

+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 2 (LEFT SIDE OF ENGINE COMPT) ETCS FUSE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B 1 MPX-B (RIGHT FUSE REAR OF ENGINE COMPT) INPUT CIRCUIT LEFT COWL SIDE J/B LEFT COWL SIDE J/B (LEFT END OF DASH) LH-IG FUSE LT GRN WIRE MICRO COMPUTER MPX NCA WIRE ORG/ WIRE PNK WIRE POWER SUPPLY RED WIRE RELAY RIGHT COWL SIDE J/B (RIGHT END OF DASH) SPEEDOMETER THROTTLE W/ MOTOR BODY ASSEMBLY (REAR OF ENGINE) TRANSMISSION CONTROL SWITCH (BELOW CENTER CONSOLE) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

BLK WIRE BRN WIRE CIRCUIT COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH CRUISE CONTROL SWITCH CRUISE IND DOME +B 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 WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

BACKUP BACKUP LAMPS CIRCUIT BATB BLU WIRE BRN WIRE CANADA CENTER STOP LAMP ASSEMBLY CLTB CLTE CLTS COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DCTY ECU-IG RH FUSE FR DOOR RH FUSE FUSE GAUGE FUSE GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INPUT CIRCUIT LAMP LEFT REAR LIGHT ASSEMBLY LEFT TURN IND LT GRN WIRE MICRO COMPUTER MPX ORG/ WIRE PCTY POWER SUPPLY CIRCUIT RED WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT LICENSE PLATE LIGHT ASSEMBLY RIGHT MAIN BODY ECU RIGHT TURN IND TAIL IND TI, TE FUSE VIO WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

1 2 3 IG A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) BLK WIRE BRN WIRE CLEARANCE WARNING ECU (W/ PARKING ASSIST) (LEFT SIDE OF TRUNK) COMBINATION METER ASSEMBLY ECU-IG RH FUSE ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) FUSE GRN WIRE GRN/RED WIRE GRY WIRE GTX+ SIL GTX- HOT AT ALL TIMES HOT W/ ACC RELAY ENERGIZED INPUT CIRCUIT LEFT COWL SIDE J/B (LEFT END OF DASH) LT BLU WIRE LT GRN WIRE MICRO COMPUTER MPX MPX-B FUSE NETWORK GATEWAY ECU (RIGHT END OF DASH) ORG/ WIRE PNK WIRE RED WIRE RH-IG 1 RELAY RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT MAIN BODY ECU SIL W/ TIRE PRESSURE WARNING SYSTEM W/O TIRE PRESSURE WARNING SYSTEM WHT WIRE WHT/BLK WIRE

10 11 PNK WIRE BLK WIRE BLU WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM DOME +B ECU-IG RH FUSE ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT W/ IG 2 RELAY ENERGIZED RIGHT COWL GAUGE FUSE SIDE J/B (RIGHT END OF DASH) HOT W/ RH-IG 1 RELAY ENERGIZED IG+ POWER SUPPLY CIRCUIT INPUT CIRCUIT LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT LUGGAGE COMPARTMENT DOOR HINGE ASSEMBLY (LEFT FRONT OF LUGGAGE COMPARTMENT) LT GRN WIRE LUGGAGE COMPARTMENT DOOR ASSEMBLY LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY MAIN BODY ECU LGCY TSW MASTER IND MICRO COMPUTER MICRO COMPUTER (SUB) MPX MPX-B FUSE MULTI-INFORMATION DISPLAY ORG/ WIRE PANEL) PNK 16 17 18 19 20 21 WIRE RED WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) WHT WIRE WHT/BLK WIRE YEL WIRE

17 18 SHIELD ANTENNA BACK BLK WIRE BLU WIRE BRN WIRE CA+ CGND SHIELD COMBINATION METER COMPUTER DATA LINES SYSTEM DISP OFF HOOK DISP VOICE FUSE GPS ANTENNA GRN WIRE GRY WIRE GVIF HOT AT ALL TIMES HOT W/ HOT W/ ACC RELAY ENERGIZED ILL ILL INPUT CIRCUIT INSTRUMENT CLUSTER SYSTEM J/C 27 (BEHIND LEFT SIDE OF DASH) J/C 70 (BEHIND RIGHT SIDE OF DASH) LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT STEERING PAD SWITCH LH ECU-IG FUSE LT BLU WIRE LT GRN WIRE MAIN BODY ECU MAIN BODY ECU PKB IND MICRO COMPUTER MIN MIN+ SGND MACC SHIELD MPX MSSL MULTI-MEDIA MODULE RECEIVER ASSEMBLY NCA WIRE ON HOOK ORG/ WIRE PARKING BRAKE SWITCH (TOP OF PARKING BRAKE LEVER) PKB SPD REV PNK WIRE RAD 3 FUSE RED WIRE RH ECU-IG FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT STEERING PAD SWITCH SEEK SEEK- MODE SHIELD SPIRAL CABLE (UNDER STEERING WHEEL) STEERING PAD SWITCH SWG TV 1 FUSE V+ V- VIO WIRE VMTF VOL (-) W/ LEXUS ENFORM W/O LEXUS ENFORM WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

ACC FUSE ANTENNA BACK BLK WIRE BLU WIRE BRN WIRE CA+ CGND COMBINATION METER COMPUTER DATA LINES SYSTEM DISP GPS ANTENNA GRN WIRE GRY WIRE GVIF HOT AT ALL TIMES HOT W/ HOT W/ ACC RELAY ENERGIZED INPUT CIRCUIT INSTRUMENT CLUSTER SYSTEM LEFT COWL SIDE J/B LEFT MAIN BODY ECU LEFT STEERING PAD SWITCH LT BLU WIRE MACC MICRO COMPUTER MIN MODE MPX MSSL MULTI-MEDIA MODULE RECEIVER ASSEMBLY NCA WIRE OFF HOOK ON HOOK ORG/ WIRE PARKING BRAKE SWITCH PNK WIRE RAD 3 FUSE RED WIRE REV RH ECU-IG FUSE RIGHT COWL SIDE J/B RIGHT END OF DASH) RIGHT MAIN BODY ECU RIGHT STEERING PAD SWITCH SDARS ASSEMBLY SEEK SGND SHIELD SPIRAL CABLE STEERING PAD SWITCH SWG TV 1 FUSE VIO WIRE VMTF VOICE VOL (-) W/ LEXUS ENFORM W/O LEXUS ENFORM WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM DISP ENGINE ROOM R/B 1 GRN WIRE GRY WIRE HOT AT ALL TIMES INPUT CIRCUIT INSTRUMENT CLUSTER SYSTEM LEFT FRONT SPEAKER ASSEMBLY 1 LEFT FRONT SPEAKER ASSEMBLY 2, 3 (FRONT SPEAKER ASSEMBLY 3) LEFT REAR SPEAKER ASSEMBLY LEFT STEERING PAD SWITCH LT BLU WIRE MICRO COMPUTER MODE MSSL MUTE OFF HOOK ON HOOK ORG/ WIRE PNK TMUT WIRE PNK WIRE RAD 2 FUSE RED WIRE RED/BLU WIRE RIGHT FRONT SPEAKER ASSEMBLY 1 RIGHT FRONT SPEAKER ASSEMBLY 2, 3 (FRONT SPEAKER ASSEMBLY 3) RIGHT REAR SPEAKER ASSEMBLY RIGHT STEERING PAD SWITCH SEEK SPIRAL CABLE STEERING PAD SWITCH ASSEMBLY STEREO COMPONENT AMPLIFIER VIO WIRE VOICE VOL (-) W/ SAFETY CONNECT W/O SAFETY CONNECT WFL+ PNK RL+ PNK RR+ WIRE WFL- PNK WFR- WIRE WFR- WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BLU/WHT WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DOME FUSE ECT PWR IND ECT SNOW IND ENGINE OIL LEVEL SENSOR (BOTTOM OF ENGINE) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) INPUT CIRCUIT LAMP IND MALFUNCTION 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 PATTERN SELECT SWITCH ASSEMBLY 1 PNK 10 11 WIRE PNK WIRE POWER SUPPLY CIRCUIT PWR RED WIRE RED/ WHT WIRE RED/BLU WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT MAIN BODY ECU (RIGHT END OF DASH) SNOW SPEEDOMETER TACHOMETER WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DOME FUSE ECT PWR IND ECT SNOW IND 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) IND 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 PATTERN SELECT SWITCH ASSEMBLY 1 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) RIGHT MAIN BODY ECU (RIGHT END OF DASH) SNOW SPEEDOMETER TACHOMETER VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE