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

+ECU 13 22 CANH CANL 14 6 CANL CANH 16 17 PNK WIRE 22 21 CANL CANH 7 1 CANL CANH 9 10 CANH CANL AIR BAG SENSOR ASSEMBLY (UNDER LOWER BECU ALTB IG BLK WIRE BLU WIRE BRN WIRE CENTER CONSOLE) 8 9 5 6 11 12 2 3 CERTIFICATION ECU (BEHIND RIGHT DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DISPLAY, NAVIGATION MODULE DISPLAY DOOR 1 FUSE DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS LSFR BCTY CLTB CLTS CLTE ECM (ENGINE CONTROL MODULE) (LEFT SIDE OF ENGINE COMPT) FFOG HEADLIGHTS SYSTEM HEAD TAIL FRCY LSWL TR+ ACTG ACT- ACT+ ACTD FSPT FUSE GRN WIRE GRY WIRE HCTY BZR DIM IND GSW HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS SUPPLEMENTAL RESTRAINTS SYSTEM HORN HORNS SYSTEM HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) ECU-B FUSE HOT W/ ACC RELAY ENERGIZED INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) LEFT FRONT POWER WINDOW REGULATOR MOTOR (DRIVER'S DOOR) LEFT REAR POWER WINDOW REGULATOR MOTOR (LEFT REAR DOOR) LIN LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END OF DASH) MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY PKB FFGO TRLY HRLY PNK HU RCTY LSFL HF INTERIOR LIGHTS SYSTEM WIRE PNK LIN WIRE PNK PNK WIRE PNK WIRE POWER STEERING ECU (BEHIND LEFT SIDE OF DASH) PWS HAZ INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM RED WIRE RELAY ENERGIZED RIGHT FRONT POWER WINDOW REGULATOR MOTOR (FRONT PASSENGER'S DOOR) RIGHT REAR POWER WINDOW REGULATOR MOTOR (RIGHT REAR DOOR) SIDE OF DASH) SKID CONTROL ECU ASSEMBLY (BEHIND LEFT SIDE OF DASH) SLF+ CANL CANH DRL SLIDING ROOF CONTROL ECU (CENTER OF ROOF) TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE W/ NAVIGATION 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

10 9 TX- TX+ 21 22 13 14 CANH CANL 9 10 PNK WIRE A/C CONTROL ASSEMBLY (LEFT CENTER OF DASH) BLK WIRE BLU WIRE BRN WIRE CANN CANP COMBINATION METER ASSEMBLY DISPLAY, NAVIGATION MODULE DISPLAY ECM (ENGINE CONTROL MODULE) (LEFT SIDE OF ENGINE COMPT) GRN WIRE INIT LIN LT GRN WIRE MULTI-DISPLAY MULTI-MEDIA INTERFACE ECU ASSEMBLY (UNDER CENTER CONSOLE) PNK PNK WIRE PNK WIRE PRST RED WIRE SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) TACH VIO WIRE W/ NAVIGATION W/O NAVIGATION WHT WIRE YEL WIRE

10 9 CANN CANP 10 9 TXM- TXM+ 14 13 CANH CANL 16 17 PNK WIRE 3 2 CANH CANL 4 3 CANH CANL 5 15 ATX+ ATX- 7 8 TX+ TX- 8 9 CANN CANP AIR BAG SENSOR ASSEMBLY (UNDER LOWER CENTER CONSOLE) BLK WIRE BLU WIRE BRN WIRE GRN WIRE INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) LEFT FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER'S DOOR) LEFT REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LIN LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END OF DASH) MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY PNK LIN WIRE PNK PNK WIRE PNK WIRE POSITION CONTROL ECU, SWITCH ASSEMBLY RADIO RECEIVER SUB-ASSEMBLY (W/O NAVIGATION W/ STEREO COMPONENT AMPLIFIER) RED WIRE RIGHT OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER'S DOOR) ST-PLUG STEERING SENSOR (STEERING COLUMN) STEREO COMPONENT AMPLIFIER VIO WIRE WHT WIRE WHT/BLK WIRE YAW RATE SENSOR (BELOW CENTER CONSOLE) YEL WIRE

A/C CONTROL ASSEMBLY AIR BAG SENSOR ASSEMBLY BRN WIRE CERTIFICATION ECU ASSEMBLY COMBINATION METER ASSEMBLY CONTROL CRUISE CONTROL MAIN SWITCH D DR UNLOCK D/L RELAY RELAY DCM (TELEMATICS TRANSCEIVER) DISPLAY, NAVIGATION MODULE DISPLAY DR UNLOCK BK/DR RELAY RELAY DRIVING SUPPORT ECU ASSEMBLY ENGINE WATER PUMP ASSEMBLY FROM FROM GROUND HAZARD WARNING SIGNAL SWITCH ASSEMBLY IGNITION COIL ASSEMBLY 3 IGNITION COIL ASSEMBLY 4 IGNITION IGNITION COIL COIL ASSEMBLY 2 ASSEMBLY 1 INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) RELAY J/B (DIAGRAM 3 OF 5) J/C MAIN BODY ECU MILLIMETER WAVE RADAR SENSOR ASSEMBLY MULTI MULTI DISPLAY DISPLAY SWITCH P/POINT RELAY POWER SWITCH PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY RADIO RECEIVER ASSEMBLY RELAY RELAY RELAY SEAT BELT CONTROL ECU SEAT HEATER SWITCH SPIRAL CABLE SUB-ASSEMBLY (STEERING COLUMN) ST-PLUG STEERING PAD SWITCH ASSEMBLY STEERING SENSOR TIRE PRESSURE WARNING ECU TIRE PRESSURE WARNING RESET SWITCH TOP OF ENGINE) TRANSMISSION SHIFT MAIN SWITCH W/ DYNAMIC RADAR CRUISE W/ NAVIGATION W/O NAVIGATION W/ STEREO COMPONENT AMPLIFIER W/O NAVIGATION, STEREO COMPONENT AMPLIFIER WHT/BLK WIRE

BLK WIRE BLU WIRE BRN WIRE CLOSE OPEN COMPUTER DATA LINES SYSTEM ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE GVIF HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) IGN FUSE LT GRN WIRE MAYDAY FUSE MTX- MULTI- DISPLAY SWITCH MULTI-DISPLAY NCA WIRE PNK WIRE RAD 1 FUSE RAD 2 FUSE RED WIRE SGND TILT VCC VDD VIO WIRE W/ BACK GUIDE MONITOR W/ REAR VIEW MONITOR WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CLOSE OPEN COMPUTER DATA LINES SYSTEM ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE GVIF HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) IGN FUSE LT GRN WIRE MAYDAY FUSE MTX- MULTI- DISPLAY SWITCH MULTI-DISPLAY NCA WIRE PNK WIRE RAD 1 FUSE RAD 2 FUSE RED WIRE SGND TILT VCC VDD VIO WIRE W/ BACK GUIDE MONITOR W/ REAR VIEW MONITOR WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 CSLD CDR+ CDR- CDL+ CDL- MUTE GND ARI ASGN ALI AGND AUXI ADIM BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B IGN FUSE (BEHIND LEFT END OF DASH) INSTRUMENT CLUSTER SYSTEM IVO+ IVO- LT GRN WIRE MAIN ANTENNA MAYDAY FUSE MIN+ MACC MIN- SGND MULTI-MEDIA INTERFACE ECU ASSEMBLY (UNDER CENTER CONSOLE) NCA WIRE RAD 1 FUSE RAD 2 FUSE RADIO RECEIVER ASSEMBLY RED WIRE SDARS ANTENNA STEREO JACK ADAPTER ASSEMBLY 1 SUB ANTENNA SWG TXM- TXM+ ULO+ URO+ VIO WIRE WHT WIRE YEL WIRE

1 2 3 4 5 6 RR+ RL+ RR- ADIM MACC MIN+ AGND AUXI ARI ASGN ALI BLK WIRE BLU WIRE BRN WIRE ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) FR+ FL+ PNK WIRE FR- FL- GND MUTE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B IGN FUSE (BEHIND LEFT END OF DASH) ILL- RL- INSTRUMENT CLUSTER SYSTEM LEFT FRONT SPEAKER ASSEMBLY 1 LEFT FRONT SPEAKER ASSEMBLY 2 LEFT REAR SPEAKER ASSEMBLY 1 LI+ LIN LOUT LT GRN WIRE MAYDAY FUSE NCA WIRE PNK WIRE R(IN) RAD 1 FUSE RAD 2 FUSE RADIO RECEIVER ASSEMBLY RADIO SETTING CONDENSER RED WIRE RI+ RIGHT FRONT SPEAKER ASSEMBLY 1 RIGHT FRONT STEREO JACK SPEAKER ADAPTER ASSEMBLY 1 ASSEMBLY 2 RIGHT REAR SPEAKER ASSEMBLY 1 ROUT SDARS ANTENNA MAIN ANTENNA SPD SGND MIN- SUB ANTENNA SWG VIO WIRE W/ SAFETY CONNECT W/O SAFETY CONNECT WHT WIRE WHT/BLK WIRE YEL WIRE