Lexus LS III facelift (2003-2006) junction connector 16, 17 (behind upper center of dash) Wiring diagrams

15 12 7 4 5 WFSE TS SIL CG SG 7 6 SPDR SPDL ABS 1 FUSE ABS CUT RELAY (ON LEFT REAR OF ENGINE COMPT) ABS MTR RELAY AFS ECU (RIGHT SIDE OF DASH) ASSEMBLY) LEFT REAR ABS SPEED SENSOR BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BM FR+ FL- RR+ RL- FSW+ BRAKE PEDAL LOAD SENSING SWITCH BRN WIRE BRN/WHT WIRE BZ +BS COMPUTER DATA LINES SYSTEM D/G MRF MR DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DRIVER SIDE J/B EC (AT LEFT RADIATOR SIDE SUPPORT) EF (ON LEFT CYLINDER HEAD) ENGINE ROOM 3 R/B FR- FL+ RR- RL+ FRO FLO FUSIBLE LINK BLOCK (ON RIGHT ABS 2 FUSE REAR OF ENGINE COMPT) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES INIT WFSE CSW JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 3, 4 (LEFT FRONT OF ENGINE COMPT) LBL CANH LEFT FRONT ABS SPEED SENSOR LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PARKING BRAKE SWITCH (BEHIND LEFT END OF DASH, ON PARKING BRAKE MECHANISM) PNK WIRE PRESSURE SWITCH (LOWER LEFT SIDE OF DASH) RED WIRE RED/WHT WIRE RED/YEL WIRE STP PKB TRACTION CONTROL SWITCH TS CANL VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

3 2 1 BAT ESS IG 5 4 3 2 1 IG ABS IG FUSE ABS IND. BLK WIRE BLK/RED WIRE BLU WIRE BLU/YEL WIRE BRAKE IND BRN WIRE BUZZER CANH CANL GND COMBINATION METER COMPUTER DATA LINES SYSTEM DOME FUSE (AT RIGHT KICK PANEL) DRIVER SIDE J/B DRIVER SIDE J/B ECU (AT LEFT KICK PANEL) STPI ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE ROOM 1 R/B FR-IG (ON LEFT FRONT OF FUSE ENGINE COMPT, BEHIND HEADLIGHT) FUSE GAUGE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE HOT AT ALL TIMES IH (AT RIGHT SIDE OF SHIFT LEVER) II (AT RIGHT SIDE OF SHIFT LEVER) JUNCTION CONNECTOR 1, 2 (LEFT FRONT OF ENGINE COMPT) JUNCTION CONNECTOR 12, 13 JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) MULTI-DISPLAY ORG/ WIRE PASSENGER SIDE J/B RED WIRE SLIP IND SPEEDOMETER STEERING SENSOR (INSIDE TOP OF STEERING COLUMN) STOP FUSE STOPLIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) STPA TRAC OFF IND VSC WARNING BUZZER (BEHIND LOWER LEFT SIDE OF DASH) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YAW RATE SENSOR (BELOW REAR OF CENTER CONSOLE) YEL 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

AFS ECU (RIGHT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLU WIRE BLU/ORG WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM DOME FUSE DRIVER SIDE J/B (AT LEFT KICK PANEL) EA (AT RIGHT RADIATOR SIDE SUPPORT) EC (AT LEFT RADIATOR SIDE SUPPORT) ENGINE ROOM 1 J/B (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) ENGINE ROOM 1 R/B ENGINE ROOM 2 R/B (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) FHHL HLHL HLHR FFOG FOGL FOGR FRONT CONTROLLER FRONT FOG IND FUSE GATEWAY ECU (BEHIND LEFT END OF DASH) GAUGE FUSE GRN WIRE GRY WIRE H-LP HI FUSE FR FOG FUSE H-LP L LWR FUSE H-LP R LWR FUSE HEAD IND (USA) HEAD LP RELAY HIGH BEAM IND HOT AT ALL TIMES HOT IN ON OR START II (AT RIGHT SIDE OF SHIFT LEVER) JUNCTION CONNECTOR 10 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 12 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 36, 41 (CENTER OF DASH) LEFT FRONT FOG LIGHT LEFT HEADLIGHT CONTROL ECU (BEHIND LEFT HEADLIGHT) LEFT HIGH BEAM HEADLIGHT LT GRN WIRE MAIN FUSIBLE LINK PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT CONTROL ECU (BEHIND RIGHT HEADLIGHT) RIGHT HIGH BEAM HEADLIGHT VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 CPUB 6 7 IMI IMO BLK WIRE BLK/YEL WIRE BLU/BLK WIRE CODE COMPUTER DATA LINES SYSTEM EFIO EFII FUSE GRN/YEL WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT AT ALL TIMES PASSENGER SIDE J/B (AT RIGHT KICK PANEL) IGNITION SWITCH IH (AT RIGHT SIDE OF SHIFT LEVER) JUNCTION CONNECTOR 10, 11 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) LT GRN/BLK WIRE MPX ORG/ WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK/BLU WIRE RED/WHT WIRE TRANSPONDER KEY AMPLIFIER (ON RIGHT SIDE OF STEERING COLUMN) TRANSPONDER KEY COIL TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) TXCT TXCT AGND GND UNLOCK WARNING SWITCH VIO WIRE VIO/YEL WIRE WHT/BLK WIRE

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 13 14 15 16 17 18 19 20 21 22 23 24 MUTE L- L+ R- R+ 1 2 3 4 5 6 7 8 B+ 7 SPEAKER AUI+ AUI- AUO- AUO+ BLK WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BO (AT RIGHT REAR QUARTERPANEL) BP (AT LEFT REAR SEAT BACK) BRN WIRE COMBINATION METER COMPT, BEHIND TRIM) FL+ FR+ FL- FR- RL- RR- GND RL- RR- GRN WIRE GRN/WHT WIRE GRY WIRE JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 30 LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER LEFT REAR DOOR SPEAKER LEFT REAR TWEETER (9 SPEAKER) LT BLU WIRE LT GRN WIRE NAVIGATION ECU (IF EQUIPPED) (ON LOWER RIGHT SIDE OF LUGGAGE COMPARTMENT) ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT TWEETER RIGHT REAR DOOR SPEAKER RIGHT REAR TWEETER (9 SPEAKER) STEREO COMPONENT AMPLIFIER (ON RIGHT SIDE OF LUGGAGE TDX- TDX+ N-MUT TFL TFR- TFL+ TFR+ B+ TMUT TX+ GND TX+ MTX+ TX- TX+ VIO WIRE VIO/WHT WIRE W/ NAVIGATION W/O NAVIGATION WFL- WFR- WHT WIRE WHT/BLK WIRE WHT/RED WIRE WOOFER YEL WIRE

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 13 14 15 16 17 18 19 20 21 22 23 24 MUTE L- L+ R- R+ 1 2 3 4 5 6 7 8 B+ 7 SPEAKER AUI+ AUI- AUO- AUO+ BLK WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BO (AT RIGHT REAR QUARTERPANEL) BP (AT LEFT REAR SEAT BACK) BRN WIRE COMBINATION METER COMPT, BEHIND TRIM) FL+ FR+ FL+ FR+ RL+ RR+ FL+ FR+ GND RL- RR- FL- FR- GRN WIRE GRN/WHT WIRE GRY WIRE JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 30 (REARWARD OF RIGHT REAR FENDERWELL) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER LEFT REAR DOOR SPEAKER LEFT REAR TWEETER (9 SPEAKER) LT BLU WIRE LT GRN WIRE MTX- MTX+ NAVIGATION ECU (IF EQUIPPED) (ON LOWER RIGHT SIDE OF LUGGAGE COMPARTMENT) ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT TWEETER RIGHT REAR DOOR SPEAKER RIGHT REAR TWEETER (9 SPEAKER) STEREO COMPONENT AMPLIFIER (ON RIGHT SIDE OF LUGGAGE TMUT TX+ GND TX- MTX- RTX- RTX+ N-MU VIO WIRE VIO/WHT WIRE W/ NAVIGATION W/O NAVIGATION WFL- WFR- WHT WIRE WHT/BLK WIRE WHT/RED WIRE WOOFER YEL WIRE

+SL -SL +SR -SR 1 2 3 4 ESL SSL- SSL+ VUPL 2 4 MPX+ MPX- 3 8 MPX + MPX - A/C CONTROL ASSEMBLY AFS ECU (RIGHT SIDE OF DASH) AIR BAG AIR BAG SQUIB (FRONT PASSENGER AIR BAG ASSEMBLY) (RIGHT SIDE OF DASH) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CENTER CLUSTER INTEGRATION PANEL COMBINATION METER DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DBKL DRIVER SIDE J/B DRIVER SIDE J/B ECU (AT LEFT KICK PANEL) ENGINE ROOM 2 R/B (ON LEFT FRONT OF ENGINE COMPARTMENT, BEHIND HEADLIGHT) FRONT CONTROLLER GATEWAY ECU (BEHIND LEFT END OF DASH) GAUGE FUSE GRN WIRE GRY WIRE GRY/BLK WIRE HOT IN ON OR START IH (AT RIGHT SIDE OF SHIFT LEVER) JUNCTION CONNECTOR 16, 17 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 17 (BEHIND UPPER CENTER OF DASH) LEFT FRONT SIDE AIR BAG SENSOR (NEAR BASE OF LEFT "B" PILLAR) LEFT KNEE AIR BAG SQUIB (LOWER LEFT SIDE OF DASH) LT BLU WIRE MPX ORG/ WIRE PASSENGER SIDE J/B PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PASSENGER SIDE J/B ECU RED WIRE RED/BLK WIRE RED/BLU WIRE RIGHT KNEE AIR BAG SQUIB (LOWER RIGHT SIDE OF DASH) SIL SOLID STATE SRS IND TELEPHONE TRANSCEIVER, SPEAKER RELAY (ON LEFT SIDE OF LUGGAGE COMPT) VIO/GRN WIRE W/O LEXUS NAVIGATION SYSTEM W/ LEXUS NAVIGATION SYSTEM WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/ORG WIRE YEL/PNK WIRE YEL/RED WIRE YEL/VIO WIRE