Lexus CT I (2010-2014) (behind left side of dash) Wiring diagrams

5 6 FR- 6 8 B+ GND 7 8 9 RL- BLK WIRE BLU WIRE BRN WIRE BZ BI BS COMPUTER DATA LINES SYSTEM GRN WIRE HOT AT ALL TIMES HOT IN ON OR START HZRI IGN FUSE INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH (LEFT "B" PILLAR) LEFT REAR SPEED SENSOR (LEFT REAR WHEEL) LT BLU WIRE NCA WIRE ORG/ WIRE OUT PNK FR+ CTY RL+ WIRE PNK WIRE RED WIRE RIGHT REAR SPEED SENSOR (RIGHT REAR WHEEL) SKID CONTROL ECU ASSEMBLY (BEHIND LEFT SIDE OF DASH) STOP FUSE STOP LIGHT CONTROL RELAY ASSEMBLY STOP LIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) STPO TS VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

3 4 5 2 CANL CANH BLK WIRE BLU WIRE BRAKE IND BRAKE SYSTEM) BRN WIRE BUZZER COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CONTROLLED DASH) ECU-B FUSE ECU-IG 2 FUSE ELECTRONICALLY END OF DASH) ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) GRN WIRE HOT AT ALL TIMES IND IND ABS INSTRUMENT PANEL J/B (BEHIND LEFT INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) J/C MASTER MET FUSE MULTI-INFORMATION DISPLAY ORG/ WIRE PNK WIRE RELAY ENERGIZED SLIP IND STEERING SENSOR (STEERING COLUMN) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

A/C PRESSURE SENSOR (RIGHT REAR OF ENGINE COMPT) A/C THERMISTOR ASSEMBLY AMBIENT TEMPERATURE SENSOR (BEHIND CENTER OF FRONT BUMPER) BLK WIRE BLU WIRE BRN WIRE CLTB CLTE DATA LINES COMPUTER DOOR 1 FUSE ECU-ACC FUSE FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT W/ ACC RELAY ENERGIZED INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION RELAY (W/ PTC HEATER) ENGINE ROOM J/B (LEFT SIDE OF ENGINE COMPT) J/C LT BLU WIRE LT GRN WIRE MAIN BODY ECU ORG/ WIRE PNK WIRE PTCA PTCB PTCC RED WIRE RELAY ENERGIZED RIGHT END OF DASH) SYSTEM TFG TNG VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 ACPB ACPE A/C AMPLIFIER ASSEMBLY A/C BLOWER ASSEMBLY A/C EVAPORATOR TEMPERATURE SENSOR ACIN BLK WIRE BLU WIRE BRN WIRE BUS G BUS B BUS SGA TEA CENTER REAR SEAT INNER BELT ASSEMBLY (W/ SEAT HEATER) CLK+ COLOR (RED) WIRE COMBINATION METER ASSEMBLY COMPRESSOR ASSEMBLY W/ MOTOR COMPUTER DATA LINES SYSTEM CONNECTOR HOUSING CONNECTOR HOUSING COLOR (BLACK) CONNECTOR HOUSING COLOR (BLUE) CONNECTOR HOUSING COLOR (GREEN) CONTROL ECU (BEHIND RIGHT SIDE OF DASH) DAMPER SERVO MOTOR (AIR INLET) DAMPER SERVO MOTOR (AIR VENT MODE) DEFOGGER SYSTEM DIN DOUT DTB ETI ITE CLK GRN WIRE GRY WIRE IDH INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INVERTER ASSEMBLY W/ CONVERTER J/C LBLO LEFT "C" PILLAR) LEFT DAMPER SERVO MOTOR (AIR MIX) LEFT REAR SEAT INNER BELT ASSEMBLY (W/ SEAT HEATER) LT BLU WIRE LT GRN WIRE MET FUSE MULTI-INFORMATION DISPLAY ORG/BLK WIRE ORG/WHT WIRE PNK 25 24 WIRE PNK WIRE POWER MANAGEMENT RCSB RED WIRE RELAY ENERGIZED RIGHT DAMPER SERVO MOTOR (AIR MIX) RIGHT REAR SEAT INNER BELT ASSEMBLY (W/ SEAT HEATER) RLSB RRSB STBI TFG TNG VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

AMR RET BLK WIRE BLU WIRE BRN WIRE CANN CANP COMBINATION METER ASSEMBLY CSPT LCTY DOOR LOCKS, ANTI-THEFT SYSTEMS GRN WIRE GRY WIRE HDLO LLEW ACAN HEADLIGHTS SYSTEM HZSW LSWR LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END MEMORY SYSTEMS MILE MIRB MIRS MIRE OF DASH) OSPT PNK WIRE POSITION CONTROL ECU, SWITCH ASSEMBLY POWER MANAGEMENT CONTROL ECU (BEHIND RIGHT SIDE OF DASH) RED WIRE RLEW CANP CANN ST-PLUG TRANSMISSION CONTROL ECU (BEHIND RIGHT SIDE OF DASH) VIO WIRE WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM YEL WIRE

1 2 CANH CANL 24 25 22 21 TX- TX+ CANH CANL BLK WIRE BLU WIRE BRN WIRE CG SG CANH SIL LVL TAC CLEARANCE WARNING ECU (BEHIND RIGHT SIDE OF DASH) DATA LINK CONNECTOR 3 (UNDER LEFT SIDE OF DASH) DIA DRIVING SUPPORT ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GRY WIRE HOT AT ALL TIMES ID CODE BOX (BEHIND LEFT SIDE OF DASH) INSTRUMENT PANEL J/B OBD FUSE (BEHIND LEFT END OF DASH) PARKING ASSIST ECU (BEHIND RIGHT SIDE OF DASH) PNK LIN WIRE PNK PNK WIRE PNK WIRE RED WIRE RIGHT FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (FRONT PASSENGER'S DOOR) RIGHT REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (RIGHT REAR DOOR) SEAT BELT CONTROL ECU (BEHIND RIGHT SIDE OF DASH) SIL SLIDING ROOF CONTROL ECU (CENTER OF ROOF) ST-PLUG TOP OF ENGINE) TS TC CANL VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

3 6 33 16 37 38 20 7 9 22 32 31 5 18 STPO 6 5 B+ STP BLK WIRE BLU WIRE BRN WIRE BUZZER COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM RL+ RL- RR- RR+ FL- FL+ FR- FR+ CRUISE CONTROL DYNAMIC RADAR CRUISE CONTROL MAIN SWITCH CRUISE IND EAT ECM (ENGINE CONTROL MODULE) (LEFT SIDE OF ENGINE COMPT) GRN WIRE IND LEFT FRONT SPEED SENSOR (LEFT FRONT WHEEL) LEFT REAR SPEED SENSOR (LEFT REAR WHEEL) LT BLU WIRE LT GRN WIRE MODE MULTI-INFORMATION DISPLAY NCA WIRE ON-OFF +RES -SET ORG/ WIRE OUT PNK WIRE POWER MANAGEMENT CONTROL ECU (BEHIND RIGHT SIDE OF DASH) RED WIRE RIGHT FRONT SPEED SENSOR (RIGHT FRONT WHEEL) RIGHT REAR SPEED SENSOR (RIGHT REAR WHEEL) RIGHT STEERING PAD SWITCH CONTROL DISTANCE SKID CONTROL ECU ASSEMBLY (BEHIND LEFT SIDE OF DASH) SPIRAL CABLE SUB-ASSEMBLY (STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY STOP LIGHT CONTROL RELAY ASSEMBLY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+RES -SET 8 6 GND B+ BLK WIRE BLU WIRE BRN WIRE BUZZER COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH CRUISE IND GRN WIRE LEFT FRONT SPEED SENSOR (LEFT FRONT WHEEL) LEFT REAR SPEED SENSOR (LEFT REAR WHEEL) LT BLU WIRE LT GRN WIRE MULTI-INFORMATION DISPLAY NCA WIRE ON OFF ORG/ WIRE OUT PNK WIRE RED WIRE RIGHT FRONT SPEED SENSOR (RIGHT FRONT WHEEL) RIGHT REAR (LEFT FRONT OF SPEED SENSOR ENGINE COMPT) (RIGHT REAR WHEEL) RL+ RL- RR- RR+ FL- FL+ FR- FR+ SKID CONTROL ECU ASSEMBLY (BEHIND LEFT SIDE OF DASH) SPIRAL CABLE SUB-ASSEMBLY (STEERING COLUMN) STOP LIGHT CONTROL RELAY ASSEMBLY STPO STP VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

ACTG BK/DR RELAY BLK WIRE BLU WIRE BRN WIRE BUZZER CAN MASTER IND I/F COMBINATION METER ASSEMBLY COMBINATION SWITCH ASSEMBLY COMPUTER DATA LINES SYSTEM D/L SOURCE RELAY ECU- ECU- IG 1 FUSE FUSE FUSE LEFT END OF DASH) EFII EFIO GRN WIRE HOT AT ALL TIMES INSTRUMENT PANEL J/B (BEHIND LEFT STOP FUSE END OF DASH) HOT IN HOT AT ON OR ALL TIMES INSTRUMENT PANEL DOOR J/B (BEHIND HOT IN ON OR HOT IN ON OR START ID CODE BOX (BEHIND LEFT SIDE OF DASH) LT BLU WIRE MAIN BODY ECU MET FUSE GAUGE FUSE MULTI-INFORMATION DISPLAY PNK WIRE RED WIRE SECURITY IND TO D/L RELAY (DIAGRAM 3 OF 5) VIO WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE BZR COMPUTER DATA LINES SYSTEM D DR UNLOCK RELAY D/L RELAY DR UNLOCK RELAY DRIVER'S DOOR FROM BK/DR RELAY (DIAGRAM 2 OF 5) FROM D/L SOURCE RELAY (DIAGRAM 2 OF 5) GRN WIRE GRY WIRE HORN IND INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) LEFT "C" PILLAR) LEFT FRONT DOOR LOCK MOTOR (REAR OF DRIVER'S DOOR) LEFT REAR DOOR LOCK MOTOR (REAR OF LEFT REAR DOOR) LSWL LT BLU WIRE LT GRN WIRE MAIN BODY ECU PNK WIRE RED WIRE RIGHT FRONT DOOR LOCK MOTOR (REAR OF FRONT PASSENGER'S DOOR) RIGHT REAR DOOR LOCK MOTOR (REAR OF RIGHT REAR DOOR) VIO WIRE WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (LEFT REAR OF ENGINE COMPT) YEL WIRE