Lexus LS III (2000-2003) gateway ecu (behind left end of dash) Wiring diagrams

1 4 5 6 16 17 23 26 GROUND CPUB SIG BDR PCT 1 4 5 6 17 23 25 26 GROUND CPUB SIG BDR 6 7 8 5 RSSI DATA +5 7 9 10 20 LSW KUL KL CPSE 8 19 22 30 ML MUL PWS PWE BLK WIRE BLU WIRE BLU/RED WIRE BRN/RED WIRE BRN/WHT WIRE CTY D-ACC FUSE DOOR LOCK CONTROL RECEIVER (INNER MIRROR) DRIVER DOOR ECU (IN LEFT FRONT DOOR) DRIVER SIDE J/B (AT LEFT KICK PANEL) ENGINE ROOM R/B 2 (ON LEFT FRONT OF ENGINE COMPT) FRONT CONTROLLER FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GATEWAY ECU (BEHIND LEFT END OF DASH) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES IND BZR J/C 21 (FORWARD OF LEFT REAR FENDERWELL) J/C 27 (FORWARD OF RIGHT REAR FENDERWELL) JUNCTION CONNECTOR (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 DOOR COURTESY SWITCH LEFT FRONT DOOR LOCK MOTOR MPX-IG FUSE ORG/ WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE PNK/GRN WIRE POWER WINDOW MASTER SWITCH 8 18 6 10 ML MUL PW RED WIRE RED/BLU WIRE RIGHT FRONT DOOR COURTESY SWITCH RIGHT FRONT DOOR LOCK CONTROL SWITCH 8 19 22 27 3 1 4 2 ML MUL PWS DLE UL ILL+ RIGHT FRONT DOOR LOCK MOTOR SECURITY FUSE SECURITY INDICATOR LIGHT SH- BZRG IG RDA RSSI THEFT DETERRENT ECU (BEHIND UPPER RIGHT CENTER OF DASH) THEFT DETERRENT HORN (IN RIGHT REAR OF ENGINE COMPARTMENT) VIO WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WARNING SYSTEMS WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL/BLK WIRE

10 3 TX- TX+ 10 9 RTX+ RTX- 2 5 3 6 ATX+ ATX- TXS+ TXS- 21 9 20 8 TXS- TXS+ ATX- ATX+ 3 2 1 +B SI GND 5 15 TX+ TX- 5 18 MTX+ MTX- 6 1 TX- TX+ A/C CONTROL ASSEMBLY (BEHIND RIGHT SIDE OF DASH) A/C PRESSURE SENSOR (LEFT FRONT OF ENGINE COMPT) A/C ROOM TEMP SWITCH (DRIVER) (CENTER OF DASH) A/C ROOM TEMP SWITCH (PASSENGER) (CENTER OF DASH) A/C SOLAR SENSOR (FRONT) A/C SOLAR SENSOR (REAR) A/C SOLENOID (RIGHT SIDE OF ENGINE) AUDIO, REAR A/C CONTROL SWITCH (W/ REAR CONTROLS) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLOWER MOTOR (LOWER RIGHT SIDE OF DASH) BLU WIRE BLU/ORG WIRE BLU/YEL WIRE BRN/RED WIRE CLOCK (W/O NAVIGATION) COMBINATION METER COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DGS TSRR DOME FUSE DOWN DRIVER SIDE J/B (LEFT KICK PANEL) A/C FUSE DUAL DUIND+ DRGND PAGND DUIND- FUSE FUSIBLE LINK BLOCK (RIGHT REAR OF ENGINE COMPT) HEATER FUSE GATEWAY ECU (BEHIND LEFT END OF DASH) GAUGE FUSE GND MPX+ GND TC MPX+ MPX- GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GTX+ GTX- HEATER CONTROL SWITCH (W/ NAVIGATION) (PART OF MULTI-DISPLAY) HEATER CONTROL SWITCH (W/O NAVIGATION) (CENTER OF DASH) HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IG B+ IND INSTRUMENT PANEL REGISTER J/C 10 (BEHIND CENTER OF DASH) J/C 12, J/C 13 (BEHIND CENTER OF DASH) J/C 14, J/C 15 (BEHIND CENTER OF DASH) J/C 16, J/C 17 (BEHIND CENTER OF DASH) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MPX- BLW SOL+ SOL- RDFGR IG MPX-IG FUSE ORG/ WIRE P-ACC FUSE P-IG FUSE P/SB PASSENGER SIDE J/B (RIGHT KICK PANEL) 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 STEREO COMPONENT AMPLIFIER STEREO COMPONENT TUNER TAMO TSDR TSPA +B 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

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

10 3 TX- TX+ 11 22 2 7 12 13 4 15 17 16 5 6 9 20 CG GND IG SIL BATT 6 3 2 5 TXS- TXS+ ATX+ ATX- BLU WIRE BLU/YEL WIRE BUBS CENTER CLUSTER INTEGRATION PANEL CLEARANCE SONAR ECU (ON LEFT SIDE OF LUGGAGE COMPT) COMBINATION SWITCH D-ACC FUSE 7.5 A DRIVER SEAT ECU (BELOW LEFT SIDE OF DRIVER'S SEAT) DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVER SIDE J/B ECU (AT LEFT KICK PANEL) ENGINE ROOM R/B 2 (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) FRONT CONTROLLER FUSE 7.5 A GATEWAY ECU (BEHIND LEFT END OF DASH) GRN WIRE GRY WIRE GRY/BLK WIRE GTX+ GTX- HOT AT ALL TIMES HOT IN RUN, ACC HOT IN RUN, START J/C 31 (BEHIND LEFT REAR SEAT BACK) LEFT REAR SEAT ECU (BEHIND LEFT REAR SEAT BACK) LUGGAGE ROOM J/B ECU (ON LEFT SIDE OF LUGGAGE COMPT) MPX MPX-IG FUSE 7.5 A MULTI-DISPLAY PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE POWER TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) RADIO, PLAYER REAR SEAT CONTROL SWITCH RED WIRE RED/BLU WIRE SIL THEFT DETERRENT ECU (BEHIND UPPER RIGHT CENTER OF DASH) TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) VIO/GRN WIRE W/ NAVIGATION W/ PARK ASSIST W/O NAVIGATION WHT/BLK WIRE WHT/GRN 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

+B GND TSRR MPX- 1 3 8 GND MPX+ MPX- 10 3 TX- TX+ 10 9 RTX+ RTX- 2 5 3 6 ATX+ ATX- TXS+ TXS- 21 9 20 8 TXS- TXS+ ATX- ATX+ 5 15 TX+ TX- 5 18 MTX+ MTX- 5 6 4 14 MPX-B HIC MPX-IG P-GND 6 1 TX- TX+ A/C CONTROL ASSEMBLY (BEHIND RIGHT SIDE OF DASH) A/C SOLAR SENSOR (REAR) AUDIO, REAR A/C CONTROL SWITCH BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM COOL BOX ILLUM REAR DAMPER SERVO MOTOR DIO DOME FUSE DRIVER SIDE J/B (LEFT KICK PANEL) A/C FUSE EXO FUSE FUSIBLE LINK BLOCK (RIGHT REAR OF ENGINE COMPT) LUG J/B FUSE GATEWAY ECU (BEHIND LEFT END OF DASH) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GTX+ GTX- HEATER CONTROL SWITCH (W/ NAVIGATION) (PART OF MULTI-DISPLAY) HEATER CONTROL SWITCH (W/O NAVIGATION) (CENTER OF DASH) HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IG B+ J/C 10 (BEHIND CENTER OF DASH) J/C 12, J/C 13 (BEHIND CENTER OF DASH) J/C 14, J/C 15 (BEHIND CENTER OF DASH) J/C 16, J/C 17 (BEHIND CENTER OF DASH) J/C 23 (REARWARD OF LEFT REAR FENDEWRWELL) LT GRN WIRE LT GRN/RED WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) RR ECU-B FUSE LUGGAGE ROOM J/B ECU MPX- RMGV SMOK AUTO RHR RFR FRS SG MPX-IG FUSE P-ACC FUSE PASSENGER SIDE J/B (RIGHT KICK PANEL) P-IG FUSE PNK/GRN WIRE R-B RADIO, PLAYER RAUTO RDO REAR A/C AMPLIFIER REAR A/C UNIT REAR BLOWER RESISTOR REAR BLOWER MOTOR RED WIRE RED/BLK WIRE RED/BLU WIRE RFR RHR RR A/C FUSE SFRS SMOKE SENSOR STEREO COMPONENT AMPLIFIER STEREO COMPONENT TUNER VIO WIRE VIO/GRN WIRE W/ NAV W/O NAV W/ NAVIGATION W/O COOLER W/ COOLER W/O NAVIGATION WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

+SR -SR -SL +SL 2 4 MPX+ MPX- 3 8 MPX + MPX - 4 3 2 1 ESL SSL- SSL+ VUPL A/C CONTROL ASSEMBLY AIR BAG AIR BAG SQUIB (FRONT PASSENGER AIR BAG ASSSEMBLY) BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CENTER CLUSTER INTEGRATION PANEL COMBINATION METER DATA LINK CONNECTOR 3 (PARTIAL) (BELOW LEFT SIDE OF DASH) DBKL DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVER SIDE J/B ECU (AT LEFT KICK PANEL) ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPARTMENT, IN PROTECTIVE CASE) ENGINE ROOM 2 R/B (ON LEFT FRONT OF ENGINE COMPARTMENT, BEHIND HEADLIGHT) FRONT CONTROLLER GATEWAY ECU (BEHIND LEFT END OF DASH) GAUGE FUSE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOT IN ON OR START J/C 23 (REARWARD OF LEFT REAR FENDERWELL) JUNCTION CONNECTOR (BEHIND UPPER CENTER OF DASH) JUNCTION CONNECTOR 13 (BEHIND UPPER CENTER OF DASH) LEFT FRONT AIR BAG SENSOR (ON LEFT FRONT OF ENGINE COMPARTMENT) LEFT FRONT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT FRONT SIDE AIR BAG SENSOR (NEAR BASE OF LEFT "B" PILLAR) LT GRN/BLK WIRE MPX PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PNK/BLU WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT FRONT AIR BAG SENSOR (ON RIGHT FRONT OF ENGINE COMPARTMENT) SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) SOLID STATE SRS 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/GRN WIRE YEL/GRY WIRE YEL/PNK WIRE YEL/RED WIRE