Lexus LS III facelift (2003-2006) engine controls system Wiring diagrams

+B STA MREL IGSW SPD CANL CANH 3 4 9 16 19 26 27 30 32 33 34 35 TC STP 4 5 6 12 13 17 22 24 25 BATT ACCELERATOR POSITION SENSOR (BEHIND LEFT CENTER OF DASH) BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/YEL WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) EC (LEFT RADIATOR SIDE SUPPORT) ENGINE CONTROL MODULE (ECM) (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE CONTROLS SYSTEM GRN/BLK WIRE GRN/ORG WIRE GRY/BLK WIRE II (RIGHT SIDE OF SHIFT LEVER) J/C 10 J/C 12 J/C 13 (BEHIND UPPER CENTER OF DASH) J/C 16, J/C 17 J/C 16, J/C 17 (BEHIND UPPER CENTER OF DASH) J/C 35 (LEFT SIDE OF DASH) ORG/ WIRE PNK/BLK WIRE PWR SNOW RED WIRE RED/BLK WIRE RED/YEL WIRE SFTU SHORT CONNECTOR TAC TACH SFTD VPA EPA VCPA WHT WIRE WHT/BLK WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE

BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLU/ORG WIRE BLU/YEL WIRE DOME FUSE DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVER SIDE J/B ECU (AT LEFT KICK PANEL) EC (LEFT RADIATOR SIDE SUPPORT) EFI 1 FUSE EFI MAIN RELAY ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 1 (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) FUSE GAUGE FUSE GRN/BLK WIRE GRN/ORG WIRE HOT AT ALL TIMES HOT IN ON OR START J/C 1, J/C 2 (LEFT FRONT ENGINE COMPT) PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK/BLK WIRE RED WIRE STPI WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

+BM 1 2 3 4 5 6 22 23 28 29 M- M+ M+ A/T INDICATOR LIGHT SWITCH BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DRIVER SIDE J/B (AT LEFT KICK PANEL) EE (ON RIGHT CYL HEAD) EF (ON LEFT CYL HEAD) ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (ON LEFT SIDE OF TRANSMISSION) ENGINE CONTROL MODULE (ECM) (ON LEFT FRONT OF ENGINE COMPT, IN PROTECTIVE CASE) ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (ON FRONT CENTER OF ENGINE) ENGINE ROOM R/B 1 (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEAD- LIGHT) ETCS FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES IK (AT RIGHT SIDE OF DASH) LT BLU WIRE LT GRN WIRE O/T ORG/ WIRE PL RL NL DL RED WIRE RED/BLU WIRE RED/WHT WIRE SHIELD SLT- SLU+ STOP FUSE THROTTLE POSITION SENSOR, MOTOR (ON THROTTLE BODY) TRANSMISSION CONTROL SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

2 1 3 PNK WIRE 29 21 20 9 28 8 19 30 MM PNK WIRE 5 14 13 VC 5 14 6 VC VC 5 4 6 17 1 SIG CPUB BDR 6 4 5 26 1 BDR CPUB SIG 7 8 9 10 11 19 R/E RET RTR MSW M+ MIND 8 19 27 ML MUL DLE BL (AT LEFT REAR FLOOR J/C 21 PARTITION PANEL) (FORWARD OF LEFT REAR FENDERWELL) BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BRN/RED WIRE BRN/WHT WIRE COM COM M+R COMPUTER DATA LINES SYSTEM D DOOR FUSE DATA DOOR LOCK CONTROL RECEIVER (INNER MIRROR) (RIGHT REAR OF LUGGAGE COMPARTMENT) DRIVER DOOR ECU (INSIDE FRONT OF LEFT FRONT DOOR) DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVER SIDE J/B ECU DRIVING POSITION MEMORY SWITCH ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPARTMENT, IN PROTECTIVE CASE) ENGINE CONTROLS SYSTEM FRONT PASSENGER DOOR ECU (INSIDE RIGHT FRONT DOOR) FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE H- HTR- HOT AT ALL TIMES HOT IN ON OR START HSR HSSR HSSR HTR IG (AT LEFT SIDE OF DASH) IR (UNDER RIGHT FRONT SEAT) J/C 10, 11 (BEHIND UPPER CENTER OF DASH) J/C 12, 13 (BEHIND UPPER CENTER OF DASH) J/C 14, 15 (BEHIND UPPER CENTER OF DASH) L+ LP LEFT FRONT DOOR LOCK CONTROL SWITCH (POWER WINDOW MASTER SWITCH) LEFT REMOTE CONTROL MIRROR LEFT/RIGHT MOTOR LT BLU WIRE LT GRN WIRE MF MR MH MHR MHR ML MUL MMRY MPX-B MPX-IG FUSE MPX-IG GND MR MR+ MR- MSWE ML MUL PWE MV MVR MVR OUTER FOOT LIGHT OUTER MIRROR SWITCH P DOOR FUSE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK WIRE PNK/BLK WIRE PNK/BLU WIRE RCO RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RETRACTABLE MOTOR RIGHT FRONT DOOR LOCK CONTROL SWITCH RIGHT REMOTE CONTROL MIRROR RSSI SENSOR SENSOR HSR THEFT DETERRENT ECU (BEHIND UPPER RIGHT CENTER OF DASH) UP/DOWN MOTOR VIO WIRE VIO/GRN WIRE VIO/YEL WIRE VSR VSR VSSR VSSR WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

ABS 1 FUSE ABS 2 FUSE AIR CONDITIONING SYSTEM AIR CONDITIONING, BODY COMPUTER SYSTEMS AIR SUS FUSE ALT FUSE ALT-S FUSE BATTERY FUSE AM 2 FUSE ANTI-LOCK BRAKES, CRUISE CONTROL SYSTEMS ANTI-THEFT, BODY COMPUTER, DOOR LOCKS, POWER WINDOWS SYSTEMS ANTI-THEFT, BODY COMPUTER, HORNS SYSTEMS BATTERY BEHIND HEADLIGHT) BLK WIRE BLK/BLU WIRE BLU WIRE BLU/YEL WIRE BODY COMPUTER SYSTEM BODY COMPUTER, EXTERIOR LIGHTS SYSTEMS BODY COMPUTER, HEADLIGHTS SYSTEMS CELLULAR PHONE SYSTEM CRUISE CONTROL, ENGINE CONTROLS, TRANSMISSION SYSTEMS D-J/B FUSE D/C CUT FUSE DEFOG FUSE DEFOGGER SYSTEM ELECTRONIC SUSPENSION SYSTEM ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE CONTROLS, ANTI-THEFT, SRS, STARTING/ CHARGING SYSTEMS ENGINE ROOM R/B 1 ETCS FUSE H-LP HI FUSE FAN FUSE FAN RELAY FL MAIN FUSIBLE LINK (14 GA- FROM IGNITION SWITCH (DIAGRAM 3 OF 5) FUSE FUSE MPX-B FUSIBLE LINK BLOCK (ON RIGHT REAR OF GRN WIRE GRN/YEL WIRE HAZ FUSE MAYDAY FUSE HEADLAMP RELAY HORN FUSE EFI 1 FUSE HEADLIGHTS SYSTEM HEATER FUSE LT GRN WIRE LUG J/B FUSE NAVIGATION SYSTEM SOUND SYSTEMS ANTI-THEFT SYSTEM NCA WIRE P-J/B FUSE ST FUSE PASSENGER SIDE J/B PASSENGER SIDE J/B ECU R/B FUSE RED WIRE RELAY SEATS SYSTEM STARTER STARTING/ CHARGING SYSTEM STR LOCK FUSE RADIO 1 FUSE 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 IGNITION SWITCH (DIAGRAM 3 OF 5) TO JUNCTION TO LUGGAGE ROOM J/B (DIAGRAM 5 OF 5) TO PASSENGER SIDE J/B VIO WIRE W/ COMPASS W/O COMPASS 1 2 WHT WIRE YEL WIRE