Lexus IS III (2013-2016) seat heater control Wiring diagrams

1 2 3 4 5 6 IG 1 4 7 PNK IG WIRE 2 1 3 PNK VS IGB GND WIRE 20 11 PNK WIRE 20 34 PNK 2 4 PNK TSR SG-3 WIRE 3 4 PNK CANH CANL WIRE 8 6 ILL- ILL+ A/C AMPLIFIER (CENTER OF DASH) BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM CUSHION CENTER FUSE GRN WIRE IGB VS SI GND PNK WIRE INSTRUMENT PANEL J/B (LEFT END OF DASH) J/C J/C 11 (UNDER FRONT PASSENGER'S SEAT) J/C 12 (UNDER DRIVER SEAT) KA (LEFT KICK PANEL) LEFT SEAT BACK CLIMATE CONTROL BLOWER (DRIVER'S SEAT BACK) LEFT SEAT CLIMATE CUSHION CONTROL BLOWER ASSEMBLY (DRIVER'S SEAT CUSHION) LEFT SEAT HEATER ASSEMBLY (LEFT SEPARATE TYPE FRONT SEAT BACK COVER) LH BOLSTER LOUT LT BLU WIRE LT GRN WIRE ORG/ WIRE PA (RIGHT "B" PILLAR) PNK SHD + WIRE PNK SW WIRE PNK WIRE QA (LEFT "B" PILLAR) RED WIRE REFRESHING SEAT SWITCH RELAY ENERGIZED RH BOLSTER RIGHT SEAT BACK CLIMATE CONTROL BLOWER (FRONT PASSENGER'S SEAT BACK) RIGHT SEAT HEATER ASSEMBLY (RIGHT SEPARATE TYPE FRONT SEAT BACK COVER) RIGHT SEAT HEATER CONTROL ROUT S/HTR F/L FUSE S/HTR F/R FUSE SEAT BACK) SEAT HEATER CONTROL SG-4 SHP+ SWL SWR THL THR+ TSL VIO WIRE WHT WIRE WHT/BLK WIRE

A/C FUSE BLK WIRE BLLH BLRH BRN WIRE CTB ECU-IG LH FUSE FR S/ HTR LH FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE LH J/B-AM FUSE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT SEAT BACK CLIMATE CONTROL BLOWER (DRIVER'S SEAT BACK) LEFT SEAT CUSHION CLIMATE CONTROL BLOWER (DRIVER'S SEAT CUSHION) LEFT SEAT HEATER CONTROL SUB-ASSEMBLY LT BLU WIRE LT GRN WIRE ORG/ WIRE PANEL FUSE PNK WIRE RED WIRE RELAY RV ILL- 2 3 PNK WIRE SEAT BACK) SEAT CUSHION) SEAT HEATER CONTROL SEAT HEATER SWITCH SIGN SVSG SWL TAIL RELAY THERMISTOR THL VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

16 8 7 3 10 2 LOUT ROUT A/C AMPLIFIER (CENTER OF DASH) BLK WIRE BRN WIRE CTB FR S/ HTR RH FUSE GRN WIRE GRY WIRE IG GND LT GRN WIRE ORG/ WIRE PNK PNK WIRE PNK WIRE POWER SOURCE CONTROL ECU (RIGHT SIDE OF DASH) PNK WIRE RED WIRE RELAY ENERGIZED RH-IG FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT SEAT BACK CLIMATE CONTROL BLOWER (FRONT PASSENGER'S SEAT BACK) RIGHT SEAT CUSHION CLIMATE CONTROL BLOWER (FRONT PASSENGER'S SEAT CUSHION) RIGHT SEAT HEATER CONTROL SUB-ASSEMBLY SEAT BACK) SEAT CUSHION) SEAT HEATER CONTROL SG-4 SIGN SWR THERMISTOR THR+ VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

2 4 SG-4 TSL 4 2 SG-3 PNK PNK TSR WIRE 8 6 ILL- ILL+ A/C AMPLIFIER (CENTER OF DASH) BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM CUSHION CENTER FUSE GRN WIRE INSTRUMENT PANEL J/B (LEFT END OF DASH) J/C 11 (UNDER FRONT PASSENGER'S SEAT) J/C 12 (UNDER DRIVER'S SEAT) KA (LEFT KICK PANEL) LEFT SEAT HEATER ASSEMBLY (LEFT SEPARATE TYPE FRONT SEAT BACK COVER) LH BOLSTER LT BLU WIRE LT GRN WIRE ORG/ WIRE PA (RIGHT "B" PILLAR) PNK CANH CANL WIRE PNK IG WIRE PNK PNK SHD+ WIRE PNK SW WIRE PNK WIRE QA (LEFT "B" PILLAR) RED WIRE REFRESHING SEAT SWITCH RELAY ENERGIZED RH BOLSTER RIGHT SEAT HEATER ASSEMBLY (RIGHT SEPARATE TYPE FRONT SEAT BACK COVER) RIGHT SEAT HEATER CONTROL S/HTR F/L FUSE S/HTR F/R FUSE SEAT BACK) SEAT HEATER CONTROL SHP+ SWL SWR THL THR+ VIO WIRE WHT WIRE WHT/BLK WIRE

BRN WIRE FR S/ HTR LH FUSE FUSE GRN WIRE HOT AT ALL TIMES HOT W/ LH-IG 2 RELAY ENERGIZED HOT W/ RH-IG 1 RELAY ENERGIZED FR S/ HTR RH JUNCTION JUNCTION CONNECTOR LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT SEAT HEATER CONTROL SUB-ASSEMBLY (UNDER DRIVER'S SEAT) LT BLU WIRE ORG/ WIRE PANEL FUSE PNK WIRE RED WIRE RH-IG FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT SEAT HEATER CONTROL SUB-ASSEMBLY (UNDER RIGHT FRONT SEAT) SEAT BACK) SEAT CUSHION) SEAT HEATER CONTROL SEAT HEATER SWITCH SWL SWR TAIL RELAY THERMISTOR THL THR+ VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE