Lexus GS II facelift (2000-2004) nca Wiring diagrams

3.0L 4.3L 4.3L 3.0L A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) ALT-S FUSE ALT FUSE BATTERY BATTERY GROUND BLK WIRE BLU WIRE BLU/RED WIRE CHARGE WARNING LIGHT COMB- INATION METER DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE ROOM R/B NO.1 (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) FUSE GAUGE FUSE GENERATOR IF (LEFT KICK PANEL) IGNITION SWITCH II (UPPER RIGHT SIDE OF DASH) J/C 1 (AT LEFT SIDE OF ENGINE COMPARTMENT IN ECU BOX) J/C 17 (BEHIND UPPER RIGHT SIDE OF DASH) J/C 17 (RIGHT SIDE OF DASH) J/C 6 (LEFT KICK PANEL) MPX NCA WIRE OFF PNK WIRE RED WIRE TILT, TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) VIO WIRE WHT WIRE WHT/BLU WIRE YEL WIRE

+IG 3.0L 4 3 TS TC 4.3L 5 25 WA D/G ABS, TRAC, VSC ECU (BEHIND LEFT SIDE OF DASH) ANTI-LOCK BRAKE SYSTEM (ABS SOL RELAY) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BODY ECU 1 (IN PASSENGER SIDE J/B) BRN (OR WHT/BLK) WIRE BRN WIRE CENTER AIR BAG SENSOR ASSEMBLY (BEHIND CENTER OF DASH) CG SG COMBINATION METER DATA LINK CONNECTOR 3 (BEHIND LEFT SIDE OF DASH) DRIVER SIDE J/B ED (REAR SIDE OF INTAKE MANIFOLD) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE CONTROLS SYSTEM (EFI RELAY) GRN/BLK WIRE GRY WIRE HOT AT ALL TIMES IGNITOR (LEFT REAR OF ENGINE COMPT, TAC II (UPPER RIGHT SIDE OF DASH) J/C 1 (IN ECU BOX) J/C 10 (BEHIND LEFT SIDE OF DASH) J/C 14 (BEHIND LEFT SIDE OF DASH) LT GRN/BLK WIRE NCA WIRE OBD FUSE PASSENGER SIDE J/B PNK WIRE PNK/BLK (OR PNK) WIRE PNK/BLK WIRE SHORT PIN SIL TACH TC +B WB DATA LINK CONNECTOR 1 (LEFT SIDE OF ENGINE COMPT, BEHIND ECU BOX) WFSE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WSFE BAT

ABS, TRAC, VSC ACTUATOR BLK ORG/ WIRE BRN WIRE CRUISE CONTROL SWITCH TELEPHONE TRANSCEIVER, SPEAKER RELAY DATA LINK CONNECTOR (DLC) 1 DATA LINK CONNECTOR (DLC) 3 EC (REAR OF RIGHT CYLINDER HEAD) ED (REAR OF LEFT CYLINDER HEAD) EE (UNDER ABS/ TRAC/VSC ACTUATOR) EF (RIGHT FRONT STRUT TOWER) EFI RELAY ENGINE CONTROL MODULE ENGINE MAIN RELAY ENGINE OIL LEVEL SENSOR A/C LOCK SENSOR ENGINE ROOM RELAY BLOCK 1 (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) GRN/WHT WIRE HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 IGNITION COIL, IGNITER 1 IGNITION COIL, IGNITER 2 IGNITION COIL, IGNITER 3 IGNITION COIL, IGNITER 5 IGNITION COIL, IGNITER 4 IGNITION COIL, IGNITER 6 IGNITION COIL, IGNITER 7 IGNITION COIL, IGNITER 8 JUNCTION CONNECTOR J/C 26 (IN ECU BOX) JUNCTION CONNECTOR J/C 4 (IN ECU BOX) JUNCTION CONNECTOR J/C 5 (IN ENGINE ROOM R/B 2) JUNCTION CONNECTOR J/C 9 (BEHIND LEFT SIDE OF DASH) NCA WIRE RIGHT FRONT FOG LIGHT RIGHT FRONT SIDE MARKER LIGHT RIGHT FRONT TURN SIGNAL LIGHT RIGHT HEADLIGHT CONTROL ECU RIGHT LOW BEAM HEADLIGHT RIGHT PARKING LIGHT STARTER RELAY W/ HID W/O HID WHT/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 -B BLK WIRE BLU WIRE BLU/YEL WIRE BRN WIRE COMBINATION METER DOME FUSE DRIVER'S SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM R/B 1 (RIGHT SIDE OF ENGINE COMPARTMENT, BEHIND STRUT TOWER) GATEWAY ECU (W/O NAVIGATION) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON IH (RIGHT SIDE OF INSTRUMENT PANEL BRACE) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 13 (BEHIND LEFT SIDE OF DASH) J/C 28 (ABOVE RIGHT REAR WHEELWELL) JUNCTION CONNECTOR 18 (BEHIND RIGHT KICK PANEL) MULTI-DISPLAY (W/ NAVIGATION) MUTE R+ L+ NCA WIRE PASSENGER'S SIDE J/B (BEHIND RIGHT KICK PANEL) PNK 12 13 WIRE PNK TX- WIRE R- L- GND RADIO FUSE 1 RADIO FUSE 2 RADIO, PLAYER RED WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 FR+ FL+ TMLT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 FR+ FL+ RR+ RL+ CSR+ WF+ 1 2 3 4 5 6 7 8 9 10 11 12 CDR+ CDL+ 1 2 3 4 5 6 7 8 9 10 CDR+ CDL+ MUTE TXM+ BLK WIRE BLU WIRE BLU/BLK (OR PNK) WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED (OR VIO) WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BUS - CD AUTOMATIC CHANGER CDR- CDL- CDR- CDL- GND TXM- CENTER SPEAKER CSR- WF- FR- FL+ RR- RL+ GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE IH (RIGHT SIDE OF INSTRUMENT PANEL BRACE) J/C 21 (ABOVE RIGHT REAR WHEELWELL) J/C 22 (ABOVE RIGHT REAR WHEELWELL) LEFT FRONT DOOR SPEAKER LEFT REAR DOOR SPEAKER LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MUTE MUTE SGND R- L- N-MU NAVIGATION ECU (RIGHT REAR CORNER OF LUGGAGE COMPARTMENT) NCA WIRE PNK 12 13 WIRE PNK BUS- WIRE PNK WIRE R+ L+ SPD FR- FL- RED WIRE RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER SP- SPEAKER SPI+ STEREO COMPONENT AMPLIFIER TELEPHONE TRANSCEIVER, SPEAKER RELAY (RIGHT SIDE OF LUGGAGE COMPARTMENT) TWEETER TXM- TXM+ PNK WIRE VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WOOFER SPEAKER YEL WIRE YEL/GRN WIRE

+B FR- FL- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 -B 1 2 3 4 5 6 7 8 9 10 11 12 R+ L+ SGND MUTE 1 2 3 4 5 6 7 8 9 10 CDR+ CDL+ MUTE TXM+ 1 2 3 4 5 6 7 8 9 10 FR+ FL+ 1 2 3 4 5 6 7 8 PNK TXM+ CDR+ CKL+ TXM- CDR- MUTE WIRE 1 2 3 RR+ RL+ RR- 5 6 WF- RL- ANT ANTB TX- ANTA TX+ BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK (OR PNK) WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED (OR VIO) WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CD AUTOMATIC CHANGER CDL+ CDR_ CDL- GND TXM- DOME FUSE DRIVER'S SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM R/B 1 (RIGHT SIDE OF ENGINE COMPARTMENT, BEHIND STRUT TOWER) GATEWAY ECU (W/ NAVIGATION) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON IH (RIGHT SIDE OF INSTRUMENT PANEL BRACE) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 18 (BEHIND RIGHT KICK PANEL) LEFT FRONT DOOR SPEAKER LEFT REAR DOOR SPEAKER LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE LT LT MULTI-DISPLAY (W/O NAVIGATION) MUTE MUTE R+ L+ NAVIGATION ECU (RIGHT REAR CORNER OF LUGGAGE COMPARTMENT) NCA WIRE PASSENGER'S SIDE J/B (BEHIND RIGHT KICK PANEL) PNK BUS- BUS+ WIRE PNK WIRE PNK/BLU WIRE POWER ANTENNA SYSTEM R - L - R- L- GND RADIO FUSE 1 RADIO FUSE 2 RADIO, PLAYER RED WIRE RIGHT FRONT DOOR SPEAKER SP- SPEAKER SPI+ STEREO COMPONENT AMPLIFIER TELEPHONE TRANSCEIVER, SPEAKER RELAY (RIGHT SIDE OF LUGGAGE COMPARTMENT) TLMT TWEETER VIO WIRE WF- WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WOOFER SPEAKER RIGHT REAR DOOR SPEAKER YEL WIRE YEL/GRN WIRE

BATTERY BATTERY GROUND BLK WIRE BLK/BLU WIRE BLU WIRE BLU/YEL WIRE BRN WIRE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) STARTER FUSE EE (UNDER ABS, TRAC, VSC ACTUATOR) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPARTMENT, IN ECU BOX) ENGINE ROOM R/B NO. 1 (ON RIGHT SIDE OF ENGINE COMPARTMENT, BEHIND STRUT TOWER) FUSE IGNITION SWITCH J/C 3, J/C 4 (AT LEFT SIDE OF ENGINE COMPARTMENT IN ECU BOX) J/C 5 (IN ENGINE ROOM R/B NO. 2) MAIN FUSE NCA WIRE OFF PARK/NEUTRAL POSITION SWITCH (ON TRANSMISSION) RED WIRE STARTER STARTER RELAY WHT WIRE