Lexus CT I (2010-2014) (left side of center console) Wiring diagrams

+ECU 10 18 9 PNK WIRE 3 2 1 12 13 14 PNK PNK SHB SHRR SHG WIRE 5 15 PRST SPDR RHT LHT SHRL 7 8 SIL LVL 8 3 4 LHIG LH T LH E 8 3 4 RHIG RH T RH E BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY ECU- IG 1 FUSE ENGINE ROOM J/B ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) FUSE GAUGE FUSE GND 2 GRN WIRE HDLP HEAD HEADLAMP DIMMER SWITCH ASSEMBLY HEADLIGHT HEADLIGHT BEAM LEVEL CONTROL IND HEADLIGHT LEVELING ECU (BEHIND RIGHT END OF DASH) HL 4 HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IG 1 INIT WNG INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION RELAY LEFT HEADLIGHT ASSEMBLY LEVELING LIGHT CONTROL SWITCH AUTO LT BLU WIRE LT GRN WIRE MAIN BODY ECU MET FUSE MOTOR P/I 2 FUSE PNK WIRE RED WIRE RH LH RH+ LH+ SBR RIGHT HEADLIGHT ASSEMBLY RIGHT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY (LEFT SIDE OF REAR BUMPER) SGR TAIL OFF 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

+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

BECU ILE BLK WIRE BLU WIRE DOOR DRIVER'S DOOR ECU-B FUSE FSPT GRN WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) DOME FUSE INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) LEFT INTERIOR ILLUMINATION LIGHT ASSEMBLY LEFT MAP LIGHT LEFT OUTER REAR VIEW MIRROR ASSEMBLY LEFT VANITY LIGHT ASSEMBLY LEFT VISOR ASSEMBLY LT BLU WIRE MAIN BODY ECU MAP LIGHT ASSEMBLY MILE OFF ON OFF DOOR OSPT CSPT RED WIRE RIGHT INTERIOR ILLUMINATION LIGHT ASSEMBLY RIGHT MAP LIGHT RIGHT OUTER REAR VIEW MIRROR ASSEMBLY (W/O MEMORY) RIGHT VISOR ASSEMBLY ROOM LIGHT ASSEMBLY 1 ROOM LIGHT ASSEMBLY 2 VIO WIRE W/O MEMORY WHT WIRE WHT/BLK WIRE YEL WIRE

+ECU AIR CONDITIONING SYSTEM AUTOMATIC LIGHT CONTROL SENSOR (UPPER RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE CENTRAL STOP LIGHT ASSEMBLY CLTB CLTE CLTS COMPUTER DATA LINES SYSTEM DOOR 1 FUSE FUSE GAUGE FUSE GRN WIRE HEAD HOT AT ALL TIMES HOT W/ HOT W/ ACC RELAY ENERGIZED HZSW IGN FUSE INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) LCTY LEFT "C" PILLAR) LEFT REAR COMBINATION LIGHT ASSEMBLY LT BLU WIRE LT GRN WIRE MAIN BODY ECU MARKER NOISE FILTER (STOP LIGHT 1) (LEFT REAR OF LUGGAGE COMPT) NOISE FILTER (STOP LIGHT 2) (TOP OF CARGO DOOR) OUT PNK WIRE RCTY RED WIRE RELAY ENERGIZED RIGHT REAR COMBINATION LIGHT ASSEMBLY STOP FUSE STOP LIGHT CONTROL ECU (BEHIND LEFT END OF DASH) STOP/TAIL TAIL TAIL FUSE TAIL RELAY TSL TSR TURN 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

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

14 13 TRLY FFGO 15 6 19 21 20 22 5 8 30 28 29 27 13 14 DRL RCTY BCTY CLTS CLTB CLTE HU HF TAIL 2 4 12 11 FLCY FRCY PKB 21 8 LLEW RLEW 30 32 22 BECU IG DIM AIR CONDITIONING SYSTEM AUTOMATIC LIGHT CONTROL SENSOR (UPPER RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE CLTB CLTE CLTS COMPUTER DATA LINES SYSTEM DC/DC FUSE (LEFT SIDE OF ENGINE COMPT) DIMMER SWITCH DOOR 1 FUSE ECU- IG 1 FUSE GAUGE FUSE ECU-ACC FUSE ENGINE ROOM J/B ENGINE ROOM J/B (LEFT SIDE OF ENGINE COMPT) FLASH HIGH FOG LIGHT SWITCH FR FOG FUSE FR FOG RELAY GRN WIRE HEAD HEAD FFOG CANL CANH HEADLIGHT DIMMER SWITCH ASSEMBLY HLPL HLPR HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION RELAY LCTY LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MAIN BODY ECU MET FUSE PNK WIRE RED WIRE TAIL TAIL FUSE RELAY TAIL TAIL HEAD OFF OFF AUTO AUTO TSL TSR VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DCM (TELEMATICS TRANSCEIVER) (IF EQUIPPED) (BEHIND CENTER OF DASH) DISPLAY, NAVIGATION MODULE DISPLAY DOOR 1 FUSE ECU-ACC FUSE FUSE GRN WIRE HEADLIGHT LEVELING ECU ASSEMBLY (IF EQUIPPED) (BEHIND RIGHT END OF DASH) HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) LCTY LEFT FRONT DOOR COURTESY LIGHT SWITCH (LEFT "B" PILLAR) LEFT REAR DOOR COURTESY LIGHT SWITCH (LEFT "C" PILLAR) MAIN BODY ECU MET FUSE PARKING BRAKE SWITCH (BASE OF PARKING BRAKE LEVER) POWER MANAGEMENT CONTROL ECU (BEHIND RIGHT SIDE OF DASH) RADIO RECEIVER ASSEMBLY RCTY RED WIRE RIGHT FRONT DOOR COURTESY LIGHT SWITCH (RIGHT "B" PILLAR) RIGHT REAR DOOR COURTESY LIGHT SWITCH (RIGHT "C" PILLAR) SPDI SPDP SPDR STEREO COMPONENT AMPLIFIER ASSEMBLY (BELOW RIGHT FRONT SEAT) TIRE PRESSURE WARNING ECU (IF EQUIPPED) (BEHIND RIGHT SIDE OF DASH) VIO WIRE W/ NAVIGATION W/O NAVIGATION W/ STEREO COMPONENT AMPLIFIER W/O NAVIGATION, STEREO COMPONENT AMPLIFIER WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER RELAY (W/ AUTO WIPER SYSTEM) (FRONT OF FLOOR CONSOLE)

11 10 9 SWIL CANL CANH 17 18 PNK WIRE ALTB BECU IG TRLY BLK WIRE BLU WIRE BRN WIRE CERTIFICATION ECU (BEHIND RIGHT SIDE OF DASH) COMBINATION METER ASSEMBLY COMBINATION SWITCH ASSEMBLY COMPUTER DATA LINES SYSTEM DC/DC FUSE DOOR 1 FUSE ECU-ACC FUSE ECU-B FUSE ECU-IG 2 FUSE ENGINE ROOM J/B (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILL+ TC IMAN ECOD INSTRUMENT PANEL J/B LIGHT CONTROL RHEOSTAT LT BLU WIRE MAIN BODY ECU ORG/ WIRE PANEL FUSE MET FUSE PNK WIRE POWER SWITCH RED WIRE REV SWIL TAIL FUSE TAIL RELAY VIO WIRE WHT WIRE WHT/BLK WIRE