Lexus LS III (2000-2003) nca Wiring diagrams

1 2 3 22 23 24 25 4 BRAIDED 10 3 6 2 NSSD NSSL ATL BLK WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE EE (SIDE OF RIGHT CYLINDER HEAD) EF (SIDE OF LEFT CYLINDER HEAD) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE COOLANT TEMPERATURE SENSOR (FRONT CENTER OF ENGINE) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE J/C 4 (NEAR ECM) J/C 5 (NEAR ECM) LT GRN WIRE M- M+ ETA VC NCA WIRE NCO+ NCO- O/D DIRECT CLUTCH SPEED SENSOR (LEFT SIDE OF TRANSMISSION) ORG/ WIRE RED WIRE RED/BLU WIRE SHIFT LOCK CONTROL ECU (IN CENTER CONSOLE, BELOW SHIFT LEVER) SLU- SLU+ SLN- SLN+ EOIL OIL SLT- SLT+ THROTTLE CONTROL MOTOR (ON THROTTLE BODY) THROTTLE POSITION SENSOR (ON THROTTLE BODY) THW ETHW VEHICLE SPEED SENSOR (ON TRANSMISSION) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 VZ GND PT MOPEN MSHUT 1 2 3 4 5 6 VZ GND PT REC FRS 1 2 3 OPEN SHUT A/C AMBIENT TEMPERATURE SENSOR (BEHIND LEFT BUMPER) A/C COMP RELAY A/C CONTROL ASSEMBLY (BEHIND RIGHT SIDE OF DASH) A/C EVAPORATIVE TEMPERATURE SENSOR A/C IG FUSE A/C MAGNETIC CLUTCH, LOCK SWITCH (RIGHT SIDE OF ENGINE) A/C ROOM TEMPERATURE SENSOR (LEFT SIDE OF DASH) ACMG AIR INLET CONTROL SERVO MOTOR AIR MIX CONTROL SERVO MOTOR (DRIVER) AIR MIX CONTROL SERVO MOTOR (PASSENGER) AIR VENT MODE CONTROL SERVO MOTOR (DRIVER) AIR VENT MODE CONTROL SERVO MOTOR (PASSENGER) AMDB AMPB AODB AOPB BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOL AIR BYPASS SERVO MOTOR (DRIVER) COOL AIR BYPASS SERVO MOTOR (PASSENGER) COOLING FAN ECU (ON RADIATOR SUPPORT) DUCT SENSOR (DRIVER) (LEFT SIDE OF DASH) DUCT SENSOR (PASSENGER) (RIGHT SIDE OF DASH) ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE ROOM J/B 1 (LEFT FRONT OF ENGINE COMPT) ETAM EXHAUST GAS SENSOR (RIGHT SIDE OF ENGINE) FAN FUSE FAN RELAY FR IG FUSE FUSIBLE LINK BLOCK (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/BLK WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR START J/C 3 (NEAR ECM, IN PROTECTIVE CASE) J/C 4 (NEAR ECM, IN PROTECTIVE CASE) J/C 7 (BEHIND LEFT HEADLAMP) LCKI LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE LT GRN/WHT WIRE MAGNETIC FIELD SENSOR (W/ COMPASS) NCA WIRE NOX ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RFC SG TPI AIR AIF SG-7 TPBDR ABODR ABSDR TAM TELEPHONE TRANSCEIVER/ SPEAKER RELAY TFACEPA TFACEDR TR NOX TPBPA ABOPA ABSPA VX VY C-GND D-SIG SHIELD TELIN VMID SG-1 SG-2 SG-3 SG-4 SG-5 WATER VALVE SERVO MOTOR WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WVO WVS WVIG 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 CHG COMBINATION METER COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPARTMENT, IN PROTECTIVE CASE) ENGINE ROOM R/B 1 (LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) FR IG FUSE FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPARTMENT) GENERATOR GRY/BLK WIRE HOT IN ON OR START HOT IN ON OR START DRIVER SIDE J/B (LEFT KICK PANEL) GAUGE FUSE J/C 1, 2 (NEAR ENGINE CONTROL MODULE, IN PROTECTIVE CASE) J/C 16, 17 (BEHIND UPPER CENTER OF DASH) NCA WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE WHT/BLK WIRE YEL WIRE

6 17 1 26 23 24 15 2 12 BDR 6 26 1 17 23 24 15 2 12 BDR 6 7 8 5 RSSI DATA +5 7 10 8 CTY CTYB CYL BDCY BDR GND BLK WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/RED WIRE BRN/WHT WIRE CTY CTYB CYL LP HTR- D DOOR FUSE DOOR LOCK CONTROL RECEIVER DOOR RR LH FUSE DOOR RR RH FUSE DRIVER DOOR ECU (IN DOOR) DRIVER SIDE J/B (LEFT KICK PANEL) GATEWAY ECU (BEHIND LEFT END OF DASH) GRN WIRE GRY/BLK WIRE HOT AT ALL TIMES J/C 21 (FORWARD OF LEFT REAR FENDER- WELL) J/C 30 (REARWARD OF RIGHT REAR FENDER- WELL) LEFT FRONT DOOR COURTESY LIGHT LEFT FRONT DOOR COURTESY SWITCH LEFT REAR DOOR COURTESY LIGHT LEFT REAR DOOR COURTESY SWITCH LEFT REAR DOOR ECU (IN DOOR) LEFT SIDE OUTER REAR VIEW MIRROR LGCY LGLP LUGGAGE COMPARTMENT LIGHT 1 LUGGAGE COMPARTMENT LIGHT 2 LUGGAGE DOOR LOCK SWITCH LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) LUGGAGE ROOM J/B ECU MPX NCA WIRE ORG/ WIRE P DOOR FUSE P-GND PASSENGER DOOR ECU (IN DOOR) PASSENGER SIDE J/B (RIGHT KICK PANEL) PNK PNK WIRE PNK WIRE PNK/BLU WIRE PNK/GRN WIRE RDA RSSI RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT DOOR COURTESY LIGHT RIGHT FRONT DOOR COURTESY SWITCH RIGHT REAR DOOR COURTESY LIGHT RIGHT REAR DOOR COURTESY SWITCH RIGHT REAR DOOR ECU (IN DOOR) RIGHT SIDE OUTER REAR VIEW MIRROR RR ECU-B FUSE THEFT DETERRENT ECU (BEHIND RIGHT CENTER OF DASH) TRANSPONDER KEY COMPUTER (BEHIND RIGHT CENTER OF DASH) VIO/GRN WIRE WHT WIRE WHT/BLK WIRE

BDR BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM D DOOR FUSE DRIVER DOOR ECU (INSIDE FRONT OF LEFT FRONT DOOR) DRIVER SIDE JUNCTION BLOCK (AT LEFT KICK PANEL) FRONT PASSENGER DOOR ECU (INSIDE RIGHT FRONT DOOR) FUSE HOT AT ALL TIMES HOT IN ON OR START HTR J/B 21 (FORWARD OF LEFT REAR FENDERWELL) J/B 27 (FORWARD OF RIGHT REAR FENDERWELL) J/C 10, J/C 11 (BEHIND UPPER CENTER OF DASH) J/C 12, J/C 13 (BEHIND UPPER CENTER OF DASH) LEFT OUTSIDE REAR VIEW MIRROR MIRROR HEATER MPX-IG FUSE NCA WIRE P DOOR FUSE PASSANGER SIDE JUNCTION BLOCK (AT RIGHT KICK PANEL) PNK/BLU WIRE PPL PPL/ CPUB PPL/YEL WIRE RED WIRE RED/BLU WIRE RIGHT OUTSIDE REAR VIEW MIRROR SIG WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 ECUB 28 9 20 21 29 MSWE BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLU WIRE BLU/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR ECU (INSIDE FRONT OF LEFT FRONT DOOR) DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVING POSITION MEMORY SWITCH FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START J/C 13 (BEHIND UPPER CENTER OF DASH) J/C 14, J/C 15 (BEHIND UPPER CENTER OF DASH) J/C 9 (BEHIND LEFT END OF DASH) LT GRN WIRE MMRY MPX-IG FUSE NCA WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) RED WIRE RED/BLK WIRE RED/BLU WIRE TELESCOPIC MOTOR, POSITION SENSOR TI, TE FUSE TILT MOTOR, POSITION SENSOR TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) UNLOCK WARNING SWITCH VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

1 2 W/ COMPASS W/O COMPASS ABS 1 FUSE ABS 2 FUSE AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM, BODY COMPUTER SYSTEM AIR SUS FUSE ALT FUSE ALT-S FUSE BATTERY FUSE AM 2 FUSE P-J/B FUSE ANTI-LOCK BRAKE SYSTEM, CRUISE CONTROL SYSTEM ANTI-THEFT SYSTEM, BODY COMPUTER SYSTEM, DOOR LOCKS SYSTEM, POWER WINDOWS SYSTEM BATTERY BLK WIRE BLK/BLU WIRE BLU WIRE BLU/YEL WIRE BODY COMPUTER SYSTEM BODY COMPUTER SYSTEM, EXTERIOR LIGHTS SYSTEM NAVIGATION SYSTEM SOUND SYSTEM CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM, ENGINE CONTROLS SYSTEM, TRANSMISSION SYSTEMS D-J/B FUSE D/C CUT FUSE DEFOG FUSE DEFOGGER SYSTEM EFI 2 FUSE EFI MAIN RELAY ELECTRONIC SUSPENSION SYSTEM ENGINE CONTROLS SYSTEM ENGINE ROOM J/B 1 (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) ENGINE ROOM R/B 1 ETCS FUSE H-LP HI FUSE FAN FUSE FAN RELAY FROM IGNITION SWITCH (DIAGRAM 3 OF 5) FUSE FUSIBLE LINK BLOCK GRN WIRE HEADLAMP RELAY HORN FUSE EFI 1 FUSE HEATER FUSE LUG J/B FUSE MIRRORS SYSTEM, PASSIVE RESTRAINTS SYSTEM MPX-B NCA WIRE PASSENGER SIDE J/B ECU R/B FUSE RADIO 1 FUSE CRT FUSE HAZ FUSE FUSE RED WIRE RELAY SEATS SYSTEM STARTER STARTING/ CHARGING SYSTEM 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 ENGINE ROOM J/B 1 (R/B 1, H-LP L LWR, 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 VIO/YEL WIRE 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 20 9 GTX- GTX+ 3 10 TX+ TX- AMP FUSE ATX- TSX- ATX- TXS- BLK WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE GATEWAY ECU (BEHIND LEFT END OF DASH) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON, ACC HOT WITH L-ACC RELAY ENERGIZED J/C 14, J/C 15 (BEHIND UPPER CENTER OF DASH) J/C 28, J/C 29 (REARWARD OF RIGHT REAR FENDERWELL) J/C 30 (REARWARD OF RIGHT REAR FENDERWELL) LT GRN WIRE LUGGAGE ROOM J/B (ON LEFT SIDE OF LUGGAGE COMPT) MMUT MULTI-DISPLAY MUTE R+ L+ SGND NCA WIRE P-ACC FUSE PASSENGER'S SIDE J/B (AT RIGHT KICK PANEL) R - L - RADIO FUSE 1 RADIO, PLAYER RED WIRE RR ACC FUSE 7.5 RR ECU-B FUSE 7.5 SG R+ L+ STEREO COMPONENT TUNER TEL FUSE W/ NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE

BATTERY BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLU/ORG WIRE BLU/YEL WIRE BRN WIRE ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) FUSE FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPT) IGNITION SWITCH J/C 5, J/C 6 (NEAR ENGINE CONTROL MODULE IN PROTECTIVE CASE) LOCK NCA WIRE PARK/NEUTRAL POSITION SWITCH (ON RIGHT SIDE (OF TRANSAXLE) STA FUSE 7.5 STARTER STARTER RELAY WHT/BLK WIRE