Lexus LS III facelift (2003-2006) nca Wiring diagrams

2 1 3 4 5 GND VZ PT MOPEN MSHUT 2 1 4 5 3 GND VZ MOPEN MSHUT PT 2 3 1 SHUT 5 4 1 2 3 FRS REC VZ GND PT 6 5 2 PNK WIRE A/C AMBIENT TEMPERATURE SENSOR (BEHIND LEFT SIDE OF BUMPER FASCIA) A/C CONTROL ASSEMBLY A/C EVAPORATOR TEMPERATURE SENSOR A/C IG FUSE A/C ROOM TEMPERATURE SENSOR (BEHIND LEFT CENTER OF DASH) AIR INLET CONTROL SERVO MOTOR (RIGHT SIDE OF DASH) AIR MIX CONTROL SERVO MOTOR (DRIVER SIDE) (CENTER OF DASH) AIR VENT MODE CONTROL SERVO MOTOR (DRIVER SIDE) (CENTER OF DASH) AMPB AOPB BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/WHT WIRE BRN/YEL WIRE C-GND COMPUTER DATA LINES SYSTEM COOL AIR BYPASS SERVO MOTOR (DRIVER SIDE) (LEFT SIDE OF DASH) COOL AIR BYPASS SERVO MOTOR (FRONT PASSENGER SIDE) (RIGHT SIDE OF DASH) COOLING FAN ECU (ON FRONT CENTER OF ENGINE COMPT, ON RADIATOR SUPPORT) D-SIG DUCT SENSOR (DRIVER'S SIDE) (BEHIND UPPER LEFT SIDE OF DASH) DUCT SENSOR (FRONT PASSENGER'S SIDE) (BEHIND UPPER RIGHT SIDE OF DASH) ED (AT TOP LEFT OF DASH) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE COOLANT TEMPERATURE SENSOR (ON FRONT CENTER OF ENGINE) ENGINE ROOM R/B 1 FR IG FUSE (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) EXHAUST GAS SENSOR (ON RIGHT SIDE OF ENGINE, ON EXHAUST SYSTEM) FAN FUSE FAN RELAY FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPT) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR START JUNCTION CONNECTOR 3 (LEFT FRONT OF ENGINE COMPT) JUNCTION CONNECTOR 7 (BELOW ENGINE ROOM J/B 1, ENGINE ROOM R/B 1) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE LT GRN/WHT WIRE MAGNETIC FIELD SENSOR (W/ COMPASS) (BEHIND CENTER OF DASH) NCA WIRE NOX ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RFC SG-7 AIF AIR SHORT CONNECTOR TAM TFACEPA TFACEDR TR NOX TPBDR TPBPA AODB VMID WATER VALVE SERVO MOTOR (CENTER OF DASH) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WVIG WVO ABODR ABSDR WVS ABOPA ABSPA AMDB YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

ALT FUSIBLE LINK ALT-S FUSIBLE LINK BATTERY BATTERY GROUND BLK WIRE BLU WIRE CAHL CHARGE INDICATOR COMBINATION METER COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B ENGINE ROOM 1 R/B (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) FR IG FUSE FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPARTMENT) GAUGE FUSE GENERATOR GRY/BLK WIRE HOT IN ON OR START IH (AT RIGHT SIDE OF SHIFT LEVER) JUNCTION CONNECTOR 1, 2 (LEFT FRONT OF ENGINE COMPT) JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) NCA WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B AUI- AUO- VOL+ VOL- REV 1 2 3 4 5 6 7 8 9 10 +B IG 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 IG 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 AUI+ AUO+ PNK WIRE 1 2 3 4 5 6 7 8 9 10 VR BACK BLK WIRE BLU WIRE BLU/YEL WIRE BO (AT RIGHT REAR QUARTERPANEL) BRN WIRE CANL CANH VG CG BATT CGND CB+ COMPUTER DATA LINES SYSTEM CV- CV+ D-ACC FUSE DRIVER MPX-IG SIDE J/B FUSE (AT LEFT KICK PANEL) GATEWAY ECU (BEHIND LEFT END OF DASH) GRN WIRE GRY WIRE GRY/BLK WIRE GTX+ SIL GTX- HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START J/C 10, 11 (BEHIND UPPER CENTER OF DASH) J/C 30 (REARWARD OF RIGHT REAR FENDERWELL) J/C 36, 37 (CENTER OF DASH) J/C 45, 47 (RIGHT SIDE OF DASH) J/C 49, 50 (RIGHT REAR OF VEHICLE) LT BLU WIRE LT GRN WIRE LUGGAGE ROOM J/B MIC - MPX NAVIGATION ECU (ON LOWER RIGHT SIDE OF LUGGAGE COMPT) NCA WIRE ORG/ WIRE PASSENGER SIDE J/B ECU (AT RIGHT KICK PANEL) PASSENGER SIDE J/B FUSE (AT RIGHT KICK PANEL) PNK/BLU WIRE RED WIRE RED/BLU WIRE RR ACC FUSE RR ECU-B FUSE RR IG FUSE SNSE SOUND SYSTEMS SYNC TEL FUSE TELEVISION CAMERA TELEVISION CAMERA ECU (RIGHT REAR OF LUGGAGE COMPT) TX+ TX- SYNC VR TX+ VG VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CMP COMBINATION METER COMBINATION SWITCH TLSW COMPUTER DATA LINES DRIVER SIDE J/B (AT LEFT KICK PANEL) EF (ON LEFT CYLINDER HEAD) GND MCI+ MCI- MACC GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ACC OR ON J/C 12, 13 (BEHIND UPPER CENTER OF DASH) J/C 16, 17 (BEHIND UPPER CENTER OF DASH) J/C 3, 4 (LEFT FRONT OF ENGINE COMPT) LT GRN WIRE LT GRN/RED WIRE MULTI-DISPLAY NCA WIRE P-ACC FUSE P-IG FUSE PARKING BRAKE SWITCH (BEHIND LEFT END OF DASH, ON PARKING BRAKE MECHANISM) PASSENGER RADIO 1 SIDE J/B FUSE (AT RIGHT KICK PANEL) PBEW PNK TELSW+ TELSW- WIRE PNK WIRE PNK/BLK WIRE RED WIRE RED/GRN WIRE SLD MCO+ MCO- SLD IVO+ IVO- VR SOUND SYSTEMS SYNC VG SYSTEM VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

ABS 1 FUSE ABS 2 FUSE AIR CONDITIONING SYSTEM AIR CONDITIONING, BODY COMPUTER SYSTEMS AIR SUS FUSE ALT FUSE ALT-S FUSE BATTERY FUSE AM 2 FUSE ANTI-LOCK BRAKES, CRUISE CONTROL SYSTEMS ANTI-THEFT, BODY COMPUTER, DOOR LOCKS, POWER WINDOWS SYSTEMS ANTI-THEFT, BODY COMPUTER, HORNS SYSTEMS BATTERY BEHIND HEADLIGHT) BLK WIRE BLK/BLU WIRE BLU WIRE BLU/YEL WIRE BODY COMPUTER SYSTEM BODY COMPUTER, EXTERIOR LIGHTS SYSTEMS BODY COMPUTER, HEADLIGHTS SYSTEMS CELLULAR PHONE SYSTEM CRUISE CONTROL, ENGINE CONTROLS, TRANSMISSION SYSTEMS D-J/B FUSE D/C CUT FUSE DEFOG FUSE DEFOGGER SYSTEM ELECTRONIC SUSPENSION SYSTEM ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE CONTROLS, ANTI-THEFT, SRS, STARTING/ CHARGING SYSTEMS ENGINE ROOM R/B 1 ETCS FUSE H-LP HI FUSE FAN FUSE FAN RELAY FL MAIN FUSIBLE LINK (14 GA- FROM IGNITION SWITCH (DIAGRAM 3 OF 5) FUSE FUSE MPX-B FUSIBLE LINK BLOCK (ON RIGHT REAR OF GRN WIRE GRN/YEL WIRE HAZ FUSE MAYDAY FUSE HEADLAMP RELAY HORN FUSE EFI 1 FUSE HEADLIGHTS SYSTEM HEATER FUSE LT GRN WIRE LUG J/B FUSE NAVIGATION SYSTEM SOUND SYSTEMS ANTI-THEFT SYSTEM NCA WIRE P-J/B FUSE ST FUSE PASSENGER SIDE J/B PASSENGER SIDE J/B ECU R/B FUSE RED WIRE RELAY SEATS SYSTEM STARTER STARTING/ CHARGING SYSTEM STR LOCK FUSE RADIO 1 FUSE TO DOME FUSE (DIAGRAM 2 OF 5) TO DRIVER SIDE J/B (D-ACC RELAY) (DIAGRAM 4 OF 5) TO ENGINE ROOM J/B 1 TO ENGINE ROOM J/B 1 (R/B 1, H-LP CLN TO IGNITION SWITCH (DIAGRAM 3 OF 5) TO JUNCTION TO LUGGAGE ROOM J/B (DIAGRAM 5 OF 5) TO PASSENGER SIDE J/B VIO WIRE W/ COMPASS W/O COMPASS 1 2 WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 -B 6 21 GTX+ GTX- AMP P P/SEAT FUSE ATX+ MTX+ UTX+ MUTE ATX- MTX- UTX- BLK WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BO (AT RIGHT REAR QUARTERPANEL) BRN WIRE GATEWAY ECU (BEHIND LEFT END OF DASH) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT WITH L-ACC RELAY ENERGIZED IJ (AT RIGHT DASH BRACE) J/C 28, 29 (REARWARD OF RIGHT REAR FENDERWELL) JUNCTION CONNECTOR 14, 15 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 28, 29 (REARWARD OF RIGHT REAR FENDERWELL) JUNCTION CONNECTOR 30 LT GRN WIRE LUGGAGE ROOM J/B (ON LEFT SIDE OF LUGGAGE COMPT) MULTI-DISPLAY NCA WIRE P-ACC FUSE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) RADIO 1 FUSE PNK WIRE R- L- GND RADIO, PLAYER RED WIRE RR ACC FUSE RR ECU-B FUSE RR+ RR- RL+ RL- MUTE SG FR+ FL+ STEREO COMPONENT TUNER (ON LOWER RIGHT SIDE OF LUGGAGE COMPARTMENT) TEL FUSE TX+ TXS+ MUTE R+ L+ SGND TX- TXS- TXM- TXM+ W/ NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 -B 6 21 GTX+ GTX- AMP P P/SEAT FUSE ATX+ MTX+ UTX+ MUTE ATX- MTX- UTX- BLK WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BO (AT RIGHT REAR QUARTERPANEL) BRN WIRE GATEWAY ECU (BEHIND LEFT END OF DASH) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT WITH L-ACC RELAY ENERGIZED IJ (AT RIGHT DASH BRACE) J/C 28, 29 (REARWARD OF RIGHT REAR FENDERWELL) JUNCTION CONNECTOR 14, 15 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 28, 29 (REARWARD OF RIGHT REAR FENDERWELL) JUNCTION CONNECTOR 30 (REARWARD OF RIGHT REAR FENDERWELL) LT GRN WIRE LUGGAGE ROOM J/B (ON LEFT SIDE OF LUGGAGE COMPT) MULTI-DISPLAY NCA WIRE P-ACC FUSE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) RADIO 1 FUSE PNK WIRE R- L- GND RADIO, PLAYER RED WIRE RR ACC FUSE RR ECU-B FUSE RR+ RR- RL+ RL- MUTE SG FR+ FL+ STEREO COMPONENT TUNER (ON LOWER RIGHT SIDE OF LUGGAGE COMPARTMENT) TEL FUSE TX+ TXS+ MUTE R+ L+ SGND TX- TXS- TXM- TXM+ W/ NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE

BATT FUSE BATTERY BATTERY GROUND BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU/ORG WIRE BLU/YEL WIRE BRN WIRE EC (AT LEFT RADIATOR SIDE SUPPORT) ENGINE COMP) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) STA ENGINE ROOM 1 R/B (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) STA FUSE FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPT) GRN/BLK WIRE IGNITION SWITCH JUNCTION CONNECTOR 33, 34 (LEFT FRONT OF JUNCTION CONNECTOR 7 (BELOW ENGINE ROOM 1 J/B, ENGINE ROOM 1 R/B) LOCK OFF NCA WIRE PARK/NEUTRAL POSITION SWITCH (ON RIGHT SIDE OF TRANSMISSION) PASSENGER SIDE J/B FUSE (AT RIGHT KICK PANEL) RED WIRE RUN WIRE ST FUSE STAR STARTER STARTER RELAY WHT/BLK WIRE