Lexus IS III (2013-2016) hot at all times Wiring diagrams

ALTB ACT+ BATB BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CPUB DOOR END OF DASH) RIGHT MAIN BODY ECU FR DOOR RH FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES KUL LEFT FRONT DOOR LOCK ASSEMBLY (REAR OF LEFT FRONT DOOR) LEFT REAR DOOR LOCK ASSEMBLY (REAR OF LEFT REAR LGCY LOCK KEY LSSR LSW LSWL GSW LSWP LSWR LT BLU WIRE LT GRN WIRE ORG/ WIRE PNK WIRE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY PWS RED WIRE RED/WHT WIRE RIGHT COWL SIDE J/B (RIGHT RIGHT FRONT DOOR LOCK ASSEMBLY (REAR OF RIGHT FRONT DOOR) RIGHT REAR DOOR LOCK ASSEMBLY (REAR OF RIGHT REAR DOOR) TI, TE FUSE UDL UNLOCK DETECTION UNLOCK KEY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

29 20 23 28 21 22 VPA EPA VCPA 3 7 24 MREL BATT SPD 35 27 34 26 7 6 19 ETA 5 6 PNK WIRE 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 BATT ACCELERATOR PEDAL SENSOR ASSEMBLY (UNDER LEFT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLU WIRE BRN WIRE CAN (+) COMBINATION SWITCH ASSEMBLY COMPUTER DATA LINES SYSTEM ECM (LEFT FRONT OF ENGINE COMPT) EFI MAIN FUSE EFI MAIN RELAY ENGINE COMPT) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT) FA (LEFT SIDE ENGINE) FA (TOP REAR OF ENGINE) FUSE GRN WIRE GROUND J/C 1 (LEFT REAR OF ENGINE COMPT) GRY WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM J/C 2 (LEFT SIDE OF ENGINE COMPT) J/C 4 (LEFT SIDE OF ENGINE COMPT) KA (LEFT KICK PANEL) PNK SNSW WIRE PNK SNWI SFTU SFTD CANH CANL WIRE PNK WIRE RED WIRE RELAY ENERGIZED SHIELD SNOW MODE SWITCH STARTING/CHARGING SYSTEM STOP FUSE STOP LIGHT SWITCH ASSEMBLY (LEFT SIDE OF DASH) THROTTLE BODY W/ MOTOR ASSEMBLY (RIGHT REAR OF ENGINE) TRANSMISSION CONTROL ECU ASSEMBLY (LEFT FRONT OF ENGINE COMPT) VCTA VTA M+ M- VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+ECU 5 6 PNK WIRE BLK WIRE BLU WIRE BRN WIRE DIODE (A/T SHIFT) (BEHIND LEFT SIDE OF DASH) FA (LEFT REAR OF ENGINE) FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES IG+ PNK WIRE ILL ILL INSTRUMENT PANEL J/B (LEFT END OF DASH) J/C 1 (LEFT SIDE OF ENGINE COMPT) J/C 4 (LEFT SIDE OF ENGINE COMPT) J/C 5 (LEFT SIDE OF ENGINE COMPT) KA (LEFT KICK PANEL) LEFT PADDLE LT GRN WIRE ORG/ WIRE PAD SWITCH PARK/NEUTRAL POSITION SWITCH ASSEMBLY (RIGHT SIDE OF TRANSMISSION) PNK WIRE RED WIRE RELAY RELAY ENERGIZED RIGHT STEERING SDN SFTD PNK WIRE SFTU SHIFT POSITION INDICATOR SHIFT SWITCH SHIFT SWITCH RIGHT PADDLE SPIRAL CABLE W/ SUB-ASSEMBLY ECC (UNDER STEERING WHEEL) STARTING/ CHARGING SYSTEM STEERING PAD SWITCH ASSEMBLY SUP SWITCH WIRE 1 TRANSMISSION CONTROL SWITCH (BASE OF SELECTOR LEVER) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRAKE ACTUATOR ASSEMBLY (LEFT REAR OF ENGINE COMPT) BRN WIRE CAN I/F COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DRIVER DISPLAY DRIVER LCD ELECTRIC CONTROL TRANSMISSION SOLENOID (TRANSMISSION WIRE) ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT END OF DASH) KC (RIGHT KICK PANEL) LT BLU WIRE LT GRN WIRE METER FUSE MPX-B 1 FUSE NTB NTO NTO NTB OIL ORG/ WIRE RED WIRE RELAY ENERGIZED SLT- SLT- SLU- SLU+ SPEAKER TELLTALES TRANSMISSION CONTROL ECU ASSEMBLY (LEFT FRONT OF ENGINE COMPT) VIO WIRE WHT WIRE YEL WIRE

2 3 PNK WIRE 25 24 28 22 VG 29 20 23 28 21 22 VPA EPA VCPA 3 7 24 13 MREL BATT SPD STP ACCELERATOR PEDAL SENSOR ASSEMBLY (RIGHT REAR OF ENGINE) BLK WIRE BLK/RED WIRE BLU WIRE BRN WIRE COMBINATION SWITCH ASSEMBLY COMPUTER DATA LINES SYSTEM ECM (LEFT FRONT OF ENGINE COMPT) EFI 2 FUSE EFI MAIN FUSE EFI MAIN RELAY ENGINE COMPT) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT) FA (LEFT REAR OF ENGINE) GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM INTAKE MASS AIR FLOW METER SUB-ASSEMBLY (RIGHT SIDE OF ENGINE COMPT) KA (LEFT KICK PANEL) NT- NT+ PNK SNSW WIRE PNK SNWI SFTU SFTD CANH CANL WIRE PNK WIRE RED WIRE SHIELD SNOW MODE SWITCH STOP FUSE STOP LIGHT SWITCH ASSEMBLY (LEFT SIDE OF DASH) THA THROTTLE BODY W/ MOTOR ASSEMBLY (RIGHT REAR OF ENGINE) TRANSMISSION REVOLUTION SENSOR (COUNTER GEAR) (REAR OF TRANSMISSION) TRANSMISSION REVOLUTION SENSOR (TURBINE) (FRONT OF TRANSMISSION) VCTA VTA M+ M- VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+ECU 2 3 PNK WIRE BLK WIRE BLU WIRE BRN WIRE DIODE (A/T SHIFT) (BEHIND LEFT SIDE OF DASH) FA (TOP REAR OF ENGINE) FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES IG+ PNK WIRE ILL ILL INSTRUMENT PANEL J/B (LEFT END OF DASH) J/C 1 (LEFT SIDE OF ENGINE COMPT) J/C 4 (LEFT SIDE OF ENGINE COMPT) J/C 5 (LEFT SIDE OF ENGINE COMPT) KA (LEFT KICK PANEL) LEFT PADDLE LT GRN WIRE ORG/ WIRE PAD SWITCH PARK/NEUTRAL POSITION SWITCH ASSEMBLY (RIGHT SIDE OF TRANSMISSION) PNK PNK WIRE PNK WIRE RED WIRE RELAY RELAY ENERGIZED RIGHT STEERING SDN SELECTOR LEVER SFTD PNK WIRE SFTU SHIFT POSITION INDICATOR SHIFT SWITCH SHIFT SWITCH RIGHT PADDLE SPRIAL CABLE W/ SUB-ASSEMBLY ECC (UNDER STEERING WHEEL) STARTING/ CHARGING SYSTEM STEERING PAD SWITCH ASSEMBLY SUP SWITCH WIRE 1 TRANSMISSION CONTROL SWITCH (BASE OF VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

5 4 3 2 SLT+ SLT- SLU+ SLU- BLK WIRE BLU WIRE BRAKE ACTUATOR ASSEMBLY (LEFT REAR OF ENGINE COMPT) BRN WIRE CAN I/F COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DRIVER DISPLAY DRIVER LCD ECM (LEFT FRONT OF ENGINE COMPT) ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT END OF DASH) KC (RIGHT KICK PANEL) LT BLU WIRE LT GRN WIRE METER FUSE MPX-B 1 FUSE OIL ORG/ WIRE RED WIRE RELAY ENERGIZED SLT- SLU+ SPEAKER TELLTALES VIO WIRE WHT WIRE YEL WIRE

A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) A/C FUSE A/C PRESSURE SENSOR (LEFT SIDE OF RADIATOR) BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLW BRN WIRE BRN/RED WIRE CLTB CLTE CLTS COMPRESSOR ASSEMBLY COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DGS DGS TSD TAM SG SG-2 SG-6 ECU-IG LH FUSE FLOW CONTROL FRONT BLOWER FAN MOTOR (UNDER LOWER GRN WIRE GRY WIRE HOT AT ALL TIMES HOT W/ LH-IG 1 RELAY ENERGIZED HOT W/ LH-IG 2 RELAY ENERGIZED JUNCTION CONNECTOR LEFT COWL SIDE J/B (LEFT END OF DASH) LH-IG FUSE LT GRN WIRE MHTR RDFG MPX+ MPX- ORG/ WIRE PNK WIRE PRE TSP PNK WIRE RED WIRE RIGHT MAIN BODY ECU (RIGHT COWL SIDE JUNCTION BLOCK) SG-1 GND IG+ SMOG VENTILATION SENSOR (FRONT OF RADIATOR) SOL + SOLAR SENSOR AUTOMATIC LIGHT CONTROL SENSOR (BEHIND LEFT SIDE OF DASH) TSL TSR VALVE VIO WIRE VIO/RED WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

1 2 3 +B SI GND 19 13 14 RFC CANL CANH A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) A/C BLOWER ASSEMBLY A/C EVAPORATOR TEMPERATURE SENSOR B+ BUS BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BUS - BUS G COMPUTER DATA LINES SYSTEM CONNECTOR HOUSING COLOR CONNECTOR HOUSING COLOR (BLACK) CONNECTOR HOUSING COLOR (BLUE) CONNECTOR HOUSING COLOR (GREEN) CONNECTOR HOUSING COLOR (NATURAL) COOLING FAN ECU (BEHIND LEFT RADIATOR COOLING FAN MOTOR) COOLING FAN ECU 2 (BEHIND RIGHT RADIATOR COOLING FAN MOTOR) COOLING FAN MOTOR 1 (LEFT FRONT OF ENGINE COMPT) COOLING FAN MOTOR 2 (RIGHT FRONT OF ENGINE COMPT) DAMPER SERVO MOTOR (AIR INLET) DAMPER SERVO MOTOR (AIR MIX DRIVER SIDE) DAMPER SERVO MOTOR (AIR MIX FRONT PASSENGER SIDE) DAMPER SERVO MOTOR (AIR VENT MODE) DAMPER SERVO MOTOR (COOL AIR BYPASS) ECM (ENGINE CONTROL MODULE) (LEFT FRONT OF ENGINE COMPT) EFI ENGINE COOLANT TEMPERATURE SENSOR (TOP OF ENGINE) ENGINE COMPT) ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) ENGINE ROOM R/B 1 (RIGHT REAR OF FAN 1 FUSE FAN RELAY 1 FAN RELAY 2 FAN-2 FUSE GRN/YEL WIRE HEATER FUSE HOT AT ALL TIMES RED WIRE RED/BLK WIRE RED/BLU WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

12 13 14 15 PNK WIRE BLK WIRE BLU WIRE BRN WIRE CAN I/F COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DIODE (PARK/NEUTRAL POSITION SWITCH ASSEMBLY) (BEHIND LEFT SIDE OF DASH) DRIVER DISPLAY E.F.I. ENGINE COOLANT TEMPERATURE SENSOR (RIGHT REAR OF ENGINE) ECU-ACC FUSE ENGINE OIL LEVEL SENSOR (BOTTOM RIGHT OF ENGINE) ENGINE OIL PRESSURE SWITCH (FRONT OF ENGINE) FB (RIGHT REAR OF ENGINE COMPT) FUEL PRESSURE SENSOR (REAR OF ENGINE) FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL J/B (LEFT END OF DASH) J/C 1 (LEFT SIDE OF ENGINE COMPT) J/C 5 (LEFT SIDE OF ENGINE COMPT) KC (RIGHT KICK PANEL) LED DRIVER LOIL LT GRN WIRE OILW PNK 11 12 WIRE PNK WIRE RED WIRE RELAY RELAY ENERGIZED SHIELD SHIELD 27 28 SPEAKER TELLTALES VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE