Lexus LS III (2000-2003) computer data lines system Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SGND 1 2 4 CSNF CSNR 28 9 20 21 29 MSWE BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/WHT WIRE CLIMATE CONTROL SEAT ECU (DRIVER) (UNDER LEFT FRONT SEAT) COMPUTER DATA LINES SYSTEM CSNF SSRR SSFV SSRC PVCC CSNR SSRS SSRV SSRH IDL SYSB IG D P/SEAT FUSE DOWN DRIVER DOOR ECU (INSIDE FRONT OF LEFT FRONT DOOR) DRIVER SEAT ECU (BELOW LEFT SIDE OF DRIVER'S SEAT) DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVER'S SEAT CUSHION POSITION SENSOR DRIVER'S SEAT CUSHION POWER SEAT MOTOR DRIVER'S SEAT FRONT VERTICAL POSITION SENSOR DRIVER'S SEAT FRONT VERTICAL POWER SEAT MOTOR DRIVER'S SEAT HEAD REST POWER SEAT MOTOR, POSITION SENSOR DRIVER'S SEAT LIFTER POSITION SENSOR DRIVER'S SEAT SLIDE POSITION SENSOR DRIVER'S SEAT LIFTER POWER SEAT MOTOR DRIVER'S SEAT RECLINING POSITION SENSOR DRIVER'S SEAT RECLINING POWER SEAT MOTOR DRIVER'S SEAT SLIDE POWER SEAT MOTOR FUSE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR START IDL J/C 10 (BEHIND UPPER CENTER OF DASH) J/C 21 (FORWARD OF LEFT REAR FENDER- WELL) J/C 21 (FORWARD OF LEFT REAR FENDERWELL) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MEMORY SEAT SWITCH MMRY MPX-IG FUSE O/P ORG/ WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER SEAT CONTROL SWITCH (DRIVER'S SEAT CUSHION) POWER SEAT CONTROL SWITCH (DRIVER'S SEAT LUMBAR SUPPORT) POWER SEAT MOTOR (DRIVER'S SEAT LUMBAR SUPPORT LOWER SIDE CONTROL) POWER SEAT MOTOR (DRIVER'S SEAT LUMBAR SUPPORT UPPER SIDE CONTROL) RED WIRE RED/BLK WIRE RED/BLU WIRE VCC VIO WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

10 13 2 BUBS MPX- MPX+ 2 13 14 CLTB CLTS CLTE 5 7 8 MPX-B 7 15 HRLY AUTOMATIC LIGHT CONTROL SENSOR (BEHIND UPPER CENTER OF DASH) BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FLUID LEVEL WARNING SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRN WIRE COMBINATION SWITCH COMPUTER DATA LINES SYSTEM 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 GRY/BLK WIRE HEAD HOT AT ALL TIMES PASSENGER SIDE J/B (AT RIGHT KICK PANEL) HOT IN RUN OR START J/C 13 (BEHIND UPPER CENTER OF DASH) J/C 14, 15 (BEHIND UPPER CENTER OF DASH) J/C 7 (BELOW ENGINE ROOM 1 J/B) LEFT FRONT DOOR COURTESY SWITCH LUGGAGE ROOM J/B ECU (ON LEFT SIDE OF LUGGAGE COMPARTMENT) MPX-IG MPX-IG FUSE ORG/ WIRE PARKING BRAKE SWITCH (BEHIND LEFT SIDE OF DASH) PNK WIRE PNK/BLU WIRE POWER TILT AND POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) RCO RDA RSSI RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) THEFT DETERRENT ECU (BEHIND UPPER RIGHT CENTER OF DASH) TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL/BLK WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BLU/ORG WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM DOME FUSE ENGINE ROOM J/B 1 ENGINE ROOM J/B 1 (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) ENGINE ROOM R/B 1 ENGINE ROOM R/B 2 (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEADLIGHT) FHHL HLHL HLHR FFOG FOGL FOGR FRONT CONTROLLER FUSE GATEWAY-ECU (BEHIND LEFT SIDE OF DASH) GRN WIRE GRY WIRE GRY/BLK WIRE H-LP HI FUSE FR FOG FUSE H-LP L LWR FUSE H-LP R LWR FUSE HEAD LP RELAY HEADLIGHT CONTROL ECU (LEFT LOW BEAM) HEADLIGHT CONTROL ECU (RIGHT LOW BEAM) HOT AT ALL TIMES HOT IN RUN DRIVER SIDE J/B (AT LEFT KICK PANEL) GAUGE FUSE J/C 10, J/C 12 (BEHIND UPPER CENTER OF DASH) J/C 16, J/C 17 (BEHIND UPPER CENTER OF DASH) LEFT FRONT FOG LIGHT LEFT HIGH BEAM HEADLIGHT MAIN FUSIBLE LINK (14 GA- 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 HIGH BEAM HEADLIGHT VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

7 11 17 9 19 8 5 SHFL 9 7 21 SHRL AIR SUSPENSION ECU (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLU WIRE CHG- RHG RH+ RHT RH- RHE IG COMBINATION METER COMBINATION SWITCH HEAD COMPUTER DATA LINES SYSTEM DOME FUSE FUSE 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) FLO FRONT CONTROLLER GATEWAY-ECU (BEHIND LEFT SIDE OF DASH) GRN WIRE GRY WIRE H-LP LVL FUSE HEAD HEADLIGHT BEAM LEVEL CONTROL ECU (BEHIND RIGHT SIDE OF DASH) HOT AT ALL TIMES HOT IN RUN DRIVER SIDE J/B (AT LEFT KICK PANEL) GAUGE FUSE HOT IN RUN OR START J/C 10, J/C 12 (BEHIND UPPER CENTER OF DASH) J/C 16, J/C 17 (BEHIND UPPER CENTER OF DASH) LEFT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR (LEFT HEADLIGHT ASSEMBLY) LEFT HEIGHT CONTROL SENSOR (INSIDE LEFT FRONT WHEELWELL) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE ORG/ WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PASSENGER SIDE J/B ECU (AT RIGHT KICK PANEL) PNK WIRE PNK/BLK WIRE PNK/GRN WIRE REAR HEIGHT CONTROL SENSOR (UNDER CENTER REAR OF VEHICLE) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR (RIGHT HEADLIGHT ASSEMBLY) SBF WNG LHG LH+ LHT LH- LHE SGF SHFL SHRL SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) SPDL SPDR VIO WIRE VIO/GRN WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

BLK WIRE BLK/RED WIRE BLU WIRE CHG- RHG RH+ RHT RH- RHE IG COMBINATION METER COMBINATION SWITCH HEAD COMPUTER DATA LINES SYSTEM DOME FUSE FUSE 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) FLO FRONT CONTROLLER GATEWAY-ECU (BEHIND LEFT SIDE OF DASH) GRN WIRE GRY WIRE H-LP LVL FUSE HEAD HEADLIGHT BEAM LEVEL CONTROL ECU (BEHIND RIGHT SIDE OF DASH) HOT AT ALL TIMES HOT IN RUN DRIVER SIDE J/B (AT LEFT KICK PANEL) GAUGE FUSE HOT IN RUN OR START J/C 10, J/C 12 (BEHIND UPPER CENTER OF DASH) J/C 16, J/C 17 (BEHIND UPPER CENTER OF DASH) J/C 19, J/C 20 (BEHIND UPPER RIGHT SIDE OF DASH) LEFT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR (LEFT HEADLIGHT ASSEMBLY) LEFT HEIGHT CONTROL SENSOR (INSIDE LEFT FRONT WHEELWELL) LT GRN WIRE ORG/ WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PASSENGER SIDE J/B ECU (AT RIGHT KICK PANEL) PNK WIRE PNK/BLK WIRE PNK/GRN WIRE REAR HEIGHT CONTROL SENSOR (UNDER CENTER REAR OF VEHICLE) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR (RIGHT HEADLIGHT ASSEMBLY) SBF WNG LHG LH+ LHT LH- LHE SGF SHFL SHRL SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) SPDL SPDR VIO WIRE VIO/GRN WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

1 2 3 FE FV FR 4 16 MPX- PIND A/B A/T 2 IND A/T 3 IND A/T 4 IND A/T L IND ABS IND. AIR SUSPENSION ECU (BEHIND RIGHT SIDE OF DASH) AT D IND AT N IND AT P IND AT R IND BEAM IND BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRAKE FLUID LEVEL WARNING SWITCH (ON MASTER CYLINDER) BRAKE IND BRN WIRE BRN/YEL WIRE CHG- IND CLOCK COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE IND DATA LINK CONN DISPLAY MULTI DOME FUSE DOOR IND DRIVER SIDE JUNCTION BLOCK (BEHIND LEFT KICK PANEL) ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE CONTROL SYSTEM ELECTRONIC SUSPENSION SYSTEM ENGINE OIL LEVEL SENSOR FRONT FOG IND FSME FSMS FSMV FSSE FSSS FSSV FUEL FUEL GAUGE FUEL SENDER (MAIN) (UNDER LEFT REAR OF VEHICLE) FUEL SENDER (SUB) (UNDER RIGHT REAR OF VEHICLE) FUSE GAUGE FUSE GRN/BLK WIRE GRN/YEL WIRE GRY/BLK WIRE HEAD (USA) TAIL (CANADA) HOT AT ALL TIMES HOT IN RUN OR START J/C 10 (BEHIND UPPER CENTER OF DASH) J/C 12 (BEHIND UPPER CENTER OF DASH) J/C 16, J/C 17 (BEHIND UPPER CENTER OF DASH) J/C 30 (REARWARD OF RIGHT REAR FENDERWELL) J/C 4 (NEAR ENGINE CONTROL MODULE) J/C 7 (BEHIND ENGINE ROOM NO 1 J/B, ENGINE ROOM NO 1 R/B) LBL LT GRN WIRE LT GRN/RED WIRE LUGGAGE COMPT) LUGGAGE ROOM J/B ECU (LEFT SIDE OF MASTER IND MIL IND MOL MOPS MPX MPX+ COMPUTER DATA LINES SYSTEM MULIT-DISPLAY NAVIGATION, SOUND SYSTEMS NUM ODO PAD WEAR INDICATOR SWITCH (RIGHT FRONT) PAD WEAR INDICATOR SWITCH (RIGHT REAR) PARKING BRAKE SWITCH (LEFT SIDE OF DASH, ON PARKING BRAKE) PASSENGER SIDE J/B (RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PASSENGER SIDE JUNCTION BLOCK (BEHIND RIGHT KICK PANEL) PBEW PBLT PWR IND RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT QUARTER PANEL RSET SEAT BELT IND SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) SLIP IND SNOW IND SPEEDOMETER SRS IND TACH TACHOMETER TEMS TMS SPORT IND TRIP TRIP SWITCH TURN LH IND TURN RH IND VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE VSC OFF W/ NAVIGATION W/O NAVIGATION WATER TEMP GAUGE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED 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 SENSOR VSSR 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 BLK WIRE BLU WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM D DOOR FUSE DATA DOOR LOCK CONTROL RECEIVER (INNER MIRROR) DRIVER DOOR ECU (INSIDE FRONT OF LEFT FRONT DOOR) DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVER SIDE J/B ECU (AT LEFT KICK PANEL) DRIVING POSITION MEMORY SWITCH ENGINE CONTROL MODULE (ON LEFT FRONT OF ENGINE COMPARTMENT, IN PROTECTIVE CASE) ENGINE CONTROLS SYSTEM (PARK/NEUTRAL POSITION SWITCH) FRONT PASSENGER DOOR ECU (INSIDE RIGHT FRONT DOOR) FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HSSR HSSR SENSOR J/C 10, J/C 11 (BEHIND UPPER CENTER OF DASH) J/C 12, J/C 13 (BEHIND UPPER CENTER OF DASH) J/C 14, J/C 15 (BEHIND UPPER CENTER OF DASH) J/C 27 (FORWARD OF RIGHT REAR FENDERWELL) JC-21 LEFT FRONT DOOR LOCK CONTROL SWITCH (POWER WINDOW MASTER SWITCH) LEFT OUTSIDE REAR VIEW MIRROR LEFT/RIGHT MOTOR LT GRN WIRE M+R LEFT/RIGHT MOTOR MHR ML MUL MMRY MPX-B MPX-IG FUSE MPX-IG GND MR- MR- RETRACTABLE MOTOR MSWE ML MUL PWE MVR MVR UP/DOWN MOTOR OUTER MIRROR SWITCH 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 OUTSIDE REAR VIEW MIRROR RSSI SENSOR THEFT DETERRENT ECU (BEHIND UPPER RIGHT CENTER OF DASH) UP/DOWN MOTOR VIO WIRE VIO/GRN WIRE VIO/YEL WIRE VSSR WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE

1 2 3 4 5 6 7 8 ECUB 28 9 20 21 29 MSWE BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLU WIRE BLU/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR ECU (INSIDE FRONT OF LEFT FRONT DOOR) DRIVER SIDE J/B (AT LEFT KICK PANEL) DRIVING POSITION MEMORY SWITCH FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START J/C 13 (BEHIND UPPER CENTER OF DASH) J/C 14, J/C 15 (BEHIND UPPER CENTER OF DASH) J/C 9 (BEHIND LEFT END OF DASH) LT GRN WIRE MMRY MPX-IG FUSE NCA WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) RED WIRE RED/BLK WIRE RED/BLU WIRE TELESCOPIC MOTOR, POSITION SENSOR TI, TE FUSE TILT MOTOR, POSITION SENSOR TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) UNLOCK WARNING SWITCH VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL 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 +B SLD+ 2 6 7 SYSB 30 8 9 7 4 MSWE CAN IND 7 18 20 CTY BLK WIRE BLK/RED WIRE BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DOWN DRIVER SIDE J/B (AT LEFT KICK PANEL) FUSE GRN WIRE GRN/RED WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE HDWN HOT AT ALL TIMES HRSW HUP GND SLD- IND J/C 27 (FORWARD OF RIGHT REAR FENDERWELL) J/C 31 (BEHIND LEFT REAR SEAT BACK) J/C 32 (BEHIND RIGHT REAR SEAT BACK) JC-23 LEFT REAR BUCKLE SWITCH LEFT REAR DOOR COURTESY SWITCH LEFT REAR HEAD REST LIMIT SWITCH LEFT REAR SEAT MEMORY SWITCH LUGGAGE ROOM J/B (ON LEFT SIDE OF LUGGAGE COMPARTMENT) MPX MPX BKL ORG/ WIRE PASSENGER SIDE J/B (AT RIGHT KICK PANEL) PASSENGER SIDE J/B ECU (AT RIGHT KICK PANEL) RRSW PNK/BLK WIRE PNK/BLU WIRE POWER SEAT MOTOR (LEFT REAR PASSENGER'S SEAT SLIDE CONTROL) POWER SEAT MOTOR (RIGHT REAR PASSENGER'S SEAT SLIDE CONTROL) POWER SEAT POSITION SENSOR (LEFT REAR PASSENGER'S SEAT SLIDE CONTROL) POWER SEAT POSITION SENSOR (RIGHT REAR PASSENGER'S SEAT SLIDE CONTROL) PVCC REAR DOOR ECU (LEFT) (INSIDE LEFT REAR DOOR) REAR DOOR ECU (RIGHT) (INSIDE RIGHT REAR DOOR) REAR SEAT CONTROL SWITCH REAR SEAT ECU (LEFT) (BEHIND LEFT REAR SEAT BACK) REAR SEAT ECU (RIGHT) (BEHIND RIGHT REAR SEAT BACK) REAR SEAT RESET SWITCH (UNDER FRONT OF CENTER FLOOR CONSOLE) RED WIRE RED/BLK WIRE RED/BLU WIRE RIGHT REAR BUCKLE SWITCH RIGHT REAR DOOR COURTESY SWITCH RIGHT REAR HEAD REST LIMIT SWITCH RIGHT REAR SEAT MEMORY SWITCH RR SEAT (LH) FUSE RR SEAT (RH) FUSE SET- SGND SSRH SGND SSRS SSRS SEL SSRV SYSB VIO WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE ROOM R/B 1 (ON LEFT FRONT OF ENGINE COMPT, BEHIND HEAD- LIGHT) FUEL INJ 1 FUEL INJ 3 FUEL INJ 8 FUEL INJ 6 FUEL INJ 4 FUEL INJ 2 FUEL INJ 7 FUEL INJ 5 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (ON EXHAUST SYSTEM, BELOW VEHICLE) HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) (ON EXHAUST SYSTEM, BELOW VEHICLE) HOT IN ON OR START HTL HTR INJ FUSE MPX PNK/BLU WIRE PWR PWR SNOW RED WIRE RED/BLU WIRE SNOW THA VSV (ACIS) (ON RIGHT REAR OF ENGINE) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE