Lexus LS III facelift (2003-2006) junction connector 14, 15 (behind upper center of dash) Wiring diagrams

16, 17 (BEHIND UPPER CENTER OF DASH) 3 2 1 +B SI GND 6 16 5 15 TXS+ TXS- TX+ TX- A/C CONTROL ASSEMBLY A/C FUSE A/C PRESSURE SENSOR (ON LEFT FRONT OF ENGINE COMPT) A/C ROOM TEMPERATURE SWITCH (DRIVER'S SIDE) A/C ROOM TEMPERATURE SWITCH (FRONT PASSENGER'S SIDE) A/C SOLAR SENSOR (FRONT) (BEHIND UPPER CENTER OF DASH) COMPRESSOR ASSEMBLY A/C SOLAR SENSOR (REAR) (IF EQUIPPED) (NEAR CENTER OF REAR BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLOWER MOTOR (BEHIND LOWER RIGHT SIDE OF DASH) BLU WIRE BLU/YEL WIRE CLOCK (W/O NAVIGATION) INSTRUMENT PANEL REGISTER COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DGS TSRR DOME FUSE DOWN DRIVER SIDE J/B DUAL DUIND+ DRGND PAGND DUIND- EB (UNDER FUSIBLE LINK BLOCK) FUSE FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPT) HEATER FUSE GATEWAY ECU (BEHIND LEFT END OF DASH) GAUGE FUSE (AT LEFT KICK PANEL) GND TC MPX+ MPX- GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE GRY/BLK WIRE GTX+ GTX- HEATER CONTROL SWITCH (CENTER CLUSTER INTEGRATION PANEL) (W/O NAVIGATION) HEATER CONTROL SWITCH (MULTI-DISPLAY) (W/ NAVIGATION) HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START II (AT RIGHT SIDE OF SHIFT LEVER) IND JUNCTION CONNECTOR JUNCTION CONNECTOR 14, 15 (BEHIND UPPER CENTER OF DASH) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MPX- BLW SOL+ SOL- RDFGR IG MPX-IG FUSE MULTI-DISPLAY ORG/ WIRE P-ACC FUSE P-IG FUSE P/SB PASSENGER SIDE J/B PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PRS TAMOUT PADN PAUP DRDN DRUP RADIO, PLAYER RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SPEAKER SHELF, AT BASE OF REAR WINDOW) SPEEDOMETER COMBINATION METER 4 5 1 9 3 8 IG+ TAMO TSDR TSPA +B TSL TSR VIO WIRE VIO/RED WIRE VIO/WHT WIRE W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

+B MPX- TSRR 1 2 GND 1 3 8 GND MPX+ MPX- 1 9 3 21 4 30 GND IG 13 11 16 17 18 19 20 5 MPX- RMGV SMOK AUTO RHR RFR FRS SG 2 1 GND IG 6 5 4 14 HIC MPX-B MPX-IG P-GND A/C AMPLIFIER (IN LUGGAGE COMPT) A/C CONTROL ASSEMBLY AIR PURIFIER LIGHT AUDIO, REAR A/C CONTROL SWITCH B+ GND BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM COOL BOX ILLUMINATION 1 3 2 DOME FUSE DRIVER SIDE J/B A/C FUSE (AT LEFT KICK PANEL) FUSE FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPT) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE HEATER CONTROL SWITCH (CENTER CLUSTER INTEGRATION PANEL) (W/O NAVIGATION) HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IK (AT RIGHT SIDE OF DASH) JUNCTION CONNECTOR JUNCTION CONNECTOR 10 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 14, 15 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 16, 17 (BEHIND LT BLU WIRE LT GRN WIRE LT GRN/RED WIRE LUG J/B FUSE LUGGAGE ROOM J/B (ON LEFT SIDE OF LUGGAGE COMPT) LUGGAGE ROOM J/B ECU MPX-IG FUSE MULTI-DISPLAY ORG/ WIRE P-ACC FUSE P-IG FUSE PASSENGER SIDE J/B PNK WIRE REAR BLOWER RESISTOR REAR DAMPER SERVO MOTOR (REAR CENTER OF LUGGAGE COMP) REAR MAGNETIC VALVE REAR OF LUGGAGE COMPT) RED WIRE RED/BLU WIRE RHR RR A/C FUSE RR ECU-B FUSE SMOKE SENSOR (CENTER REAR OF VEHICLE) TX- TX+ VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

A/C CONTROL ASSEMBLY A/C FUSE SIDE J/B (AT LEFT KICK PANEL) BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE COOLING FAN ECU (ON FRONT CENTER OF ENGINE COMPT, ON RADIATOR SUPPORT) 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 1 R/B (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) FAN FUSE FAN RELAY FR IG FUSE FUSIBLE LINK BLOCK (ON RIGHT REAR OF ENGINE COMPT) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IG +B GND IK (AT RIGHT SIDE OF DASH) JUNCTION CONNECTOR 1 (LEFT FRONT OF ENGINE COMPT) JUNCTION CONNECTOR 14, 15 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 3 (LEFT FRONT OF ENGINE COMPT) JUNCTION CONNECTOR 7 (BELOW ENGINE ROOM 1 J/B, ENGINE ROOM 1 R/B) LT GRN WIRE LT GRN/RED WIRE P-ACC FUSE P-IG FUSE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) RED WIRE RED/BLU WIRE RFC SHORT CONNECTOR WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

10 13 2 BUBS MPX- MPX+ 10 5 7 8 BU+ MPX-B 2 13 14 CLTB CLTS CLTE 7 15 HRLY AUTOMATIC LIGHT CONTROL SENSOR (BEHIND UPPER CENTER OF DASH) BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU/YEL WIRE BRN WIRE CLTB CLTE CLTS COMBINATION SWITCH COMPUTER DATA LINES SYSTEM 25 11 28 10 CANL CANH PKB LBL DATA RSSI DRIVER DOOR ECU (INSIDE FRONT OF LEFT FRONT DOOR) CTY DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVER SIDE J/B ECU FUSE GRN WIRE GRN/ORG WIRE HEAD HOT AT ALL TIMES HOT IN ON OR START IG (AT LEFT SIDE OF DASH) II (AT RIGHT SIDE OF SHIFT LEVER) JUNCTION CONNECTOR 13 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 14, 15 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 7 (BELOW ENGINE ROOM 1 J/B, ENGINE ROOM 1 R/B) LEFT FRONT DOOR COURTESY SWITCH (AT LEFT "B" PILLAR) LUGGAGE ROOM J/B ECU (ON LEFT SIDE OF LUGGAGE COMPARTMENT) MPX-IG MPX-IG FUSE OF DASH) ORG/ WIRE PARKING BRAKE SWITCH (BEHIND LEFT END OF DASH, ON PARKING BRAKE MECHANISM) PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE PNK/GRN WIRE POWER TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) RCO RDA RSSI RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE STEERING LOCK ECU (LEFT SIDE OF DASH) THEFT DETERRENT ECU (BEHIND UPPER RIGHT CENTER TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) VIO WIRE VIO/GRN WIRE VIO/WHT WIRE W/ SMART KEY W/O SMART KEY WHT WIRE WHT/BLK WIRE YEL WIRE

1 6 5 17 4 25 26 23 2 3 8 19 20 16 GND BDR SIG 2 4 5 6 15 16 17 22 23 25 30 AUTO 8 7 6 5 +5 DATA RSSI AUTO BL (AT LEFT REAR FLOOR PARTITION PANEL) BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/RED WIRE BRN/RED WIRE BRN/WHT WIRE BZR BZRG COMPUTER DATA LINES SYSTEM CPUB CTY DN UP PLS LMT SGND WLSW D DOOR FUSE D-ACC FUSE DDN DOOR LOCK CONTROL RECEIVER (INNER MIRROR) (RIGHT REAR OF DRIVER SIDE J/B (AT LEFT KICK PANEL) DUP GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IH (AT RIGHT SIDE OF SHIFT LEVER) II (AT RIGHT SIDE OF SHIFT LEVER) JUNCTION CONNECTOR 10, 11 (BEHIND UPPER JUNCTION CONNECTOR 12, 13 (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 14, 15 (BEHIND UPPER CENTER OF DASH) KEYLESS BUZZER (INSIDE TOP OF LEFT FRONT FENDER, NEAR BASE OF "A" PILLAR) KEYLESS BUZZER ON/OFF SWITCH LEFT FRONT POWER WINDOW MOTOR (IN LEFT FRONT DOOR) LMT LT BLU WIRE LUGGAGE COMPT) MPX-IG FUSE ORG/ WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PLS PNK WIRE PNK/BLU WIRE PNK/GRN WIRE POWER WINDOW MASTER SWITCH PWS MUP MDN PWE RDA RSSI RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SECURITY FUSE SWITCH THEFT DETERRENT ECU (BEHIND UPPER RIGHT CENTER OF DASH) VIO WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE W/ SMART KEY W/O SMART KEY W/L WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/RED 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