Lexus SC II (2001-2005) mpx Wiring diagrams

+B IGSW BATT +BM SIL 13 12 STPI STPO 2 13 5 6 17 4 7 26 EC MREL ACCELERATOR POSITION SENSOR (BEHIND LEFT CENTER OF DASH) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/ORG WIRE BLU/RED WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM D-IG FUSE DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (LEFT END OF DASH) ECT PWR. ECT SNOW ED (LEFT FRONT FENDER) EFI FUSE EFI RELAY ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 1 (RIGHT SIDE COMPT, BEHIND OF ENGINE STRUT TOWER) ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) IGN FUSE ETCS FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR START IH (UNDER STEERING COLUMN) J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 2 (IN ENGINE ROOM R/B 2) J/C 3 (IN ENGINE ROOM R/B 2) J/C 4, J/C 5 (IN ECU BOX) J/C 9 (BEHIND TOP LEFT END OF DASH) LT GRN/BLK WIRE MPX PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU (RIGHT SIDE KICK PANEL) PNK/BLK WIRE PWR RED WIRE RED/BLK WIRE RED/YEL WIRE SIL SNOW SPEEDO STOP FUSE STOPLIGHT SWITCH (TOP OF BRAKE PEDAL BRACKET) TAC TACH TACH TC WFSE EPA VPA VCPA EPTK VPTK WHT WIRE WHT/BLK WIRE WSFE YEL WIRE

ALT FUSIBLE LINK ALT-S FUSE BATTERY BATTERY GROUND BLK WIRE BLU WIRE BLU/ORG WIRE BRN WIRE CHARGE INDICATOR COMBINATION METER COMPUTER DATA LINES SYSTEM D-IG FUSE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPARTMENT, IN ECU BOX) ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) GENERATOR GRN WIRE HOT IN ON OR START IH (UNDER STEERING COLUMN) JUNCTION CONNECTOR 4, JUNCTION CONNECTOR 5 (IN ECU BOX) MPX NCA WIRE ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) RED WIRE RED/YEL WIRE WHT WIRE YEL WIRE

13 33 29 30 15 MPX 5 9 10 8 +5 RSSI DATA A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) AIR BAG BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BQ (AT RIGHT QUARTERPANEL) BRN WIRE BRN/WHT WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) DBIL DOME FUSE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER'S SIDE J/B ECU ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPARTMENT, FORWARD OF STRUT TOWER) FRONT CONTROLLER FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) HOT AT ALL TIMES I/P JUNCTION BLOCK (BEHIND UPPER CENTER OF DASH) IG (LEFT SIDE OF STEERING COLUMN) IGNITION KEY CYLINDER LIGHT IH (UNDER STEERING COLUMN) ILE FSPT J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 9, 10 (BEHIND TOP LEFT END OF DASH) JC-18 LEFT FOOT LIGHT LEFT VANITY LIGHT MAP DOOR MAP MPX MPX-B ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PBIL PERSONAL LIGHT PNK/BLU WIRE RDA RSSI RCO RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT BUCKLE SWITCH (IN RIGHT FRONT SEAT BELT BUCKLE) RIGHT FOOT LIGHT RIGHT SCUFF PLATE LIGHT RIGHT VANITY LIGHT THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) TIRE PRESSURE MONITOR RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) TRANSPONDER KEY COMPUTER (LEFT SIDE OF DASH, BEHIND GAUGE ASSEMBLY) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WIRELESS DOOR LOCK CONTROL RECEIVER (ON CENTER OF ROOF HEADER) YEL WIRE

27 7 18 30 22 CTY CTYB CYL 6 1 BDR GND AIR BAG SENSOR ASSEMBLY (AT CENTER OF DASH, BELOW RADIO) BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BP (AT LEFT QUARTERPANEL) BQ (AT RIGHT QUARTERPANEL) BRN WIRE COMBINATION METER COMBINATION SWITCH CTY CTYB CYL D DOOR FUSE D-IG FUSE DOOR IND DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPARTMENT, BEHIND STRUT TOWER) GRN WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START IH (UNDER STEERING COLUMN) J/C 13 (BEHIND RIGHT SIDE OF DASH) JC-17 JC-18 JC-20 LEFT DOOR COURTESY LIGHT LEFT DOOR COURTESY SWITCH LEFT LUGGAGE COMPARTMENT LIGHT LEFT SCUFF PLATE LIGHT LGCY LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPARTMENT) LUGGAGE ROOM J/B ECU MPX MPX-B MPXB ORG/ WIRE P DOOR FUSE P-GND PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE POWER SEAT ECU (DRIVER'S SEAT) (UNDER DRIVER'S SEAT) POWER SEAT ECU (FRONT PASSENGER'S SEAT) (UNDER FRONT PASSENGER'S SEAT) RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DOOR COURTESY LIGHT RIGHT DOOR COURTESY SWITCH RIGHT LUGGAGE COMPARTMENT LIGHT SKID CONTROL ECU (BEHIND LEFT END OF DASH) SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

BL (UNDER DRIVER'S SEAT) BLK WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU FUEL FUEL LID OPENER MOTOR (AT LEFT SIDE OF LUGGAGE COMPT) FUEL LID OPENER SWITCH FUEL OPN (0) FUEL OPN (P) FUEL OPN FUSE FUSE HOT AT ALL TIMES II (ON LEFT SIDE DASH BRACE) BP (AT LEFT QUARTERPANEL) JC-17 LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPT) LUGGAGE ROOM J/B ECU MPX MPX-B P-GND PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) RED WIRE WHT/BLK WIRE WHT/BLU 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 26 GND 25 17 16 FLO AIRBAG BEAM LEVEL INDICATOR BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM D-IG FUSE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) FRONT HEIGHT CONTROL SENSOR FUSE GRN WIRE H-LP LVL FUSE HDLV HEADLIGHT BEAM LEVEL CONTROL ECU (BEHIND LEFT END OF DASH) HOT AT ALL TIMES HOT IN ON OR START IG (LEFT SIDE OF STEERING COLUMN) IH (UNDER STEERING COLUMN) JUNCTION CONNECTOR 1 (IN ENGINE ROOM 2 R/B) JUNCTION CONNECTOR 13 (BEHIND RIGHT SIDE OF DASH) MLCOM MPX MRCOM ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PNK 1 2 3 4 5 6 WIRE PNK WIRE REAR HEIGHT CONTROL SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RHG RH+ RHT RH- RHE IG SBF WNG LHG LH+ LHT LH- LHE SGF SHFL SHRL SKID CONTROL ECU (BEHIND LEFT END OF DASH) SPDL VIO WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE WNG YEL WIRE YEL/BLK WIRE YEL/RED WIRE

BLK WIRE BLU WIRE COMBINATION SWITCH +B HORN SWITCH COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ED (REAR OF LEFT FENDER) ENGINE ROOM 1 R/B HORN FUSE (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) FRONT CONTROLLER GRN WIRE GRN/YEL WIRE HORN RELAY HORN RLY HOT AT ALL TIMES JUNCTION CONNECTOR 3 (IN ENGINE ROOM 2 R/B) LEFT HORN MPX ORG/ WIRE PNK WIRE RED WIRE RIGHT HORN SECURITY FUSE WHT WIRE YEL WIRE

1 20 22 21 12 15 6 17 18 TC 2 10 11 1 9 8 IG A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) A/T SHIFT LEVER ILLUMINATION AUDIO DOOR CONTROL SWITCH BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/YEL WIRE BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) CIGARETTE LIGHTER VSC OFF SWITCH COMBINATION SWITCH DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE ROOM 2 R/B (ON LEFT SIDE OF ENGINE COMPARTMENT, FORWARD OF STRUT) FRONT CONTROLLER FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE HOT AT ALL TIMES HOT IN ON OR START I/P JUNCTION BLOCK IH (UNDER STEERING COLUMN) IG (LEFT SIDE OF STEERING COLUMN) II (ON LEFT SIDE DASH BRACE) J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 9, 10 (BEHIND TOP LEFT END OF DASH) MPX MPX-IG FUSE MULTI- DISPLAY (W/ NAVI- GATION) ORG/ WIRE PANEL FUSE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE PNK/BLU WIRE RADIO, PLAYER RED WIRE RED/BLU WIRE RED/YEL WIRE REMOTE CONTROL MIRROR SWITCH RHEOSTAT SEAT HEATER SWITCH (IF EQUIPPED) TILT, TELESCOPIC ECU (BEHIND LEFT END OF DASH) TIRE PRESSURE MONITOR RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) TR+ RV TRANSPONDER KEY COMPUTER (LEFT SIDE OF DASH, BEHIND GAUGE ASSEMBLY) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE

21 29 30 22 PWS PWE 6 1 BDR GND AIR BAG AIR BAG SENSOR ASSEMBLY (AT CENTER OF DASH, BELOW RADIO) BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BP (AT LEFT QUARTERPANEL) BQ (AT RIGHT QUARTERPANEL) BRN WIRE BUBS COMBINATION METER D DOOR FUSE D-IG FUSE DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPARTMENT, BEHIND STRUT TOWER) FUSE GLOVE BOX LIGHT GLOVE BOX LIGHT SWITCH GRN WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START IG (LEFT SIDE OF STEERING COLUMN) IH (UNDER STEERING COLUMN) J/C 13 (BEHIND RIGHT SIDE OF DASH) JC-17 JC-18 LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPARTMENT) LUGGAGE ROOM J/B ECU MPX MPXB ORG/ WIRE P DOOR FUSE P-GND PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PNK WIRE PNK/BLU WIRE POWER SEAT ECU (DRIVER'S SEAT) (UNDER DRIVER'S SEAT) POWER SEAT ECU (FRONT PASSENGER'S SEAT) (UNDER PASSENGER'S SEAT) POWER WINDOW MASTER SWITCH PWE PWS DLE RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT DOOR LOCK CONTROL SWITCH SKID CONTROL ECU (BEHIND LEFT END OF DASH) RIGHT POWER WINDOW CONTROL SWITCH SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) THEFT DETERRENT ECU (BEHIND LEFT END OF DASH) VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

3 2 MPX 2 MPX 1 4 3 2 1 ESL SSL- SSL+ VUPL A/C CONTROL ASSEMBLY AIR BAG AIR BAG SQUIB (FRONT PASSENGER AIR BAG ASSSEMBLY) BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE COMBINATION METER D-IG FUSE DATA LINK CONNECTOR 3 (PARTIAL) (BEHIND LEFT SIDE OF DASH) DBKL DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPARTMENT, IN ECU BOX) ENGINE ROOM 2 R/B (ON LEFT FRONT OF ENGINE COMPARTMENT, FORWARD OF STRUT TOWER) FRONT CONTROLLER GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRY/BLU WIRE HOT IN ON OR START J/C 20 (UNDER RIGHT SIDE OF DRIVER'S SEAT) J/C 9 (BEHIND TOP LEFT END OF DASH) LEFT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT FRONT AIR BAG SENSOR (AT LEFT FRONT OF ENGINE COMPARTMENT) LEFT SIDE AIR BAG SENSOR (BEHIND INTERIOR TRIM, FORWARD OF LEFT REAR WHEEL) LT GRN/BLK WIRE MPX ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PNK/BLU WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT AIR BAG SENSOR (AT RIGHT FRONT OF ENGINE COMPARTMENT) SKID CONTROL ECU (BEHIND LEFT SIDE OF DASH) SOLID STATE SRS TIRE PRESSURE MONITOR RECEIVER (BEHIND CENTER OF DASH, BELOW RADIO) WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/PNK WIRE YEL/RED WIRE