Lexus SC II (2001-2005) bq (at right quarterpanel) Wiring diagrams

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

BDR BLK/RED WIRE BLK/YEL WIRE BLU/ORG WIRE BQ (AT RIGHT QUARTERPANEL) COMPUTER DATA LINES SYSTEM CPUB DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) FUSE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START HTR INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) JC-18 LEFT REMOTE CONTROL MIRROR LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPT) MIRROR HEATER MPX MPX-IG FUSE ORG/ WIRE P DOOR FUSE PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) RED/BLU WIRE RED/WHT WIRE RIGHT REMOTE CONTROL MIRROR SIG VIO/WHT WIRE WHT/BLK 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

1 2 14 FSR+ FSR- RBE+ AIR BAG SENSOR ASSEMBLY (AT CENTER OF DASH, BELOW RADIO) BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/RED WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BQ (AT RIGHT QUARTERPANEL) BRN WIRE BUZZER CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM CTY D-IG FUSE DBKL DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) FRONT PASSENGER SEAT BELT WARNING LIGHT FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START IH (UNDER STEERING COLUMN) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 13 (BEHIND RIGHT SIDE OF DASH) J/C 9, 10 (BEHIND TOP LEFT END OF DASH) JC-18 JC-20 LEFT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT DOOR COURTESY SWITCH LT GRN/BLK WIRE MPX OPEN DOOR INDICATOR ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PBLT PNK/BLU WIRE RADIO 2 FUSE RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT BUCKLE SWITCH, OCCUPANT DETECTION SENSOR SEAT BELT INDICATOR TRANSPONDER KEY COMPUTER (LEFT SIDE OF DASH, BEHIND GAUGE ASSEMBLY) UNLOCK WARNING SWITCH WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 AUI+ AUO+ 1 2 3 4 5 6 7 8 9 10 11 12 SP+ AUI+ 1 2 3 4 5 6 7 8 9 10 VR 15 5 TX- TX+ 18 5 13 19 6 9 15 2 PNK MTX- MTX+ SPD TDX- TDX+ N-MU TFL- TFL+ WIRE 3 6 TXS+ TXS- PNK WIRE 9 10 ATX- ATX+ AIR CONDITIONING SYSTEM AUO- BLK WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BO (NEAR STEREO COMPONENT AMPLIFIER) BQ (AT RIGHT QUARTERPANEL) BRN WIRE CENTER J/B (BEHIND RIGHT CENTER OF DASH) COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ENGINE ROOM 2 GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN HOT IN ON OR ACC HOT IN ON OR START IG (LEFT SIDE OF STEERING COLUMN) IH (UNDER STEERING COLUMN) INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 12 (BEHIND RIGHT SIDE OF DASH) J/C 15 J/C 9, 10 (BEHIND TOP LEFT END OF DASH) JC-18 LEFT DOOR SPEAKER (SQUAWKER, TWEETER) LT GRN WIRE LT GRN/BLK WIRE MULTI-DISPLAY NAVI +B SP- AUI- GND NAV- NAV+ NAVO NAVIGATION AMPLIFIER (AT RIGHT REAR CORNER OF LUGGAGE COMPARTMENT) NAVIGATION ECU (AT RIGHT REAR CORNER OF LUGGAGE COMPT) NCA WIRE ORG/ WIRE P-IG FUSE PARKING BRAKE SWITCH (BEHIND LEFT SIDE OF DASH) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU PKB VG PNK OPN WIRE PNK TX- WIRE PNK/BLK WIRE R/B (ON LEFT SIDE OF ENGINE COMPARTMENT, FORWARD OF STRUT TOWER) RADIO 2 FUSE RADIO, PLAYER RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE REV STARTER FUSE STEREO COMPONENT AMPLIFIER (AT RIGHT REAR CORNER OF LUGGAGE COMPT) SYNC SYNC TX- TC SPD VR TILT TV FUSE TX+ VG VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

AIR BAG AIR BAG SENSOR ASSEMBLY (AT CENTER OF DASH, BELOW RADIO) BL (UNDER DRIVER'S SEAT) BLK WIRE BQ (AT RIGHT QUARTERPANEL) D-IG FUSE DBKL DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B ECU (BEHIND LEFT KICK PANEL) BKLR HOT IN ON OR START JC-18 JC-20 LEFT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) LEFT TENSION REDUCER SOLENOID (AT BASE OF LEFT "B" PILLAR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PASSENGER SIDE J/B ECU BKLL PNK/BLU WIRE RBE+ RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT BUCKLE SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) RIGHT TENSION REDUCER SOLENOID (BASE OF RIGHT "B" PILLAR) WHT WIRE WHT/BLK WIRE

ANT ANTA ANTB AUTO ANTENNA CONTROL RELAY, MOTOR (AT RIGHT SIDE OF LUGGAGE COMPT) BLK/RED WIRE BLU/RED WIRE BQ (AT RIGHT QUARTERPANEL) CENTER J/B (BEHIND RIGHT CENTER OF DASH) ENGINE ROOM 1 R/B GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 12 (BEHIND RIGHT SIDE OF DASH) J/C 15 J/C 9 (BEHIND TOP LEFT END OF DASH) JC-18 P-IG FUSE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) RADIO 1 FUSE RADIO 2 FUSE RADIO, PLAYER RED/BLU WIRE WHT/BLK WIRE WHT/RED WIRE

1 4 5 6 GND CPUB SIG BDR 18 10 MUL 2 13 MPX+ MPX- 25 26 LCTE LCT 3 4 13 6 5 20 LSW KUL KL A+ A- CPSE 3 5 6 20 LSW A- A+ CPSE 4 8 LCTY LCM+ 8 19 20 22 27 29 30 ML MUL 8 9 19 21 22 27 28 30 ML WLSW MUL PWS BL (UNDER DRIVER'S SEAT) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BQ (AT RIGHT QUARTERPANEL) COMPUTER DATA LINES SYSTEM CTY DLE PNK WIRE CTY PWE D DOOR FUSE DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) MPX-IG FUSE ENGINE ROOM 1 R/B (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILL INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) JC-18 LEFT DOOR COURTESY SWITCH LEFT DOOR LOCK CONTROL SWITCH (POWER WINDOW MASTER SWITCH) LUGGAGE COMPARTMENT DOOR DETECTION SWITCH (IN LUGGAGE COMPT, NEAR LOCK ASSEMBLY) LUGGAGE COMPARTMENT DOOR LOCK MOTOR (IN LUGGAGE COMPT, NEAR LOCK ASSEMBLY) LUGGAGE ROOM J/B (AT LEFT REAR CORNER OF LUGGAGE COMPT) LUGGAGE ROOM J/B ECU (AT LEFT REAR CORNER OF LUGGAGE COMPT) ORG/ WIRE P DOOR FUSE PASSENGER DOOR ECU (IN RIGHT DOOR) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE RADIO 2 FUSE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DOOR COURTESY SWITCH RIGHT DOOR LOCK CONTROL SWITCH RIGHT DOOR LOCK MOTOR, DOOR UNLOCK DETECTION SWITCH SECURITY FUSE SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) TAIL FUSE VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 QWR+ RMR- QWR- LMR- LMR+ RMR+ A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BM (UNDER PASSENGER'S SEAT) BQ (AT RIGHT QUARTERPANEL) BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) FUSE GND MPX- MPX+ GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START IGN IH (UNDER STEERING COLUMN) INSTRUMENT PANEL J/B (BEHIND UPPER CENTER OF DASH) J/C 13 (BEHIND RIGHT SIDE OF DASH) JC-18 LEFT LUGGAGE COMPARTMENT DOOR DRIVE MOTOR (AT LEFT SIDE OF LUGGAGE COMPT) LEFT ROOF DRIVE MOTOR (BELOW LEFT "C" PILLAR) LLR LCR ES LOR LPRB LLRE LCRE RPR LPRE RORE ROR LT GRN WIRE LT GRN/BLK WIRE MPX-IG FUSE ORG/ WIRE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE RIGHT LUGGAGE COMPARTMENT DOOR DRIVE MOTOR (AT RIGHT SIDE OF LUGGAGE COMPT) RIGHT QUARTER POWER WINDOW MOTOR RIGHT ROOF DRIVE MOTOR (BELOW RIGHT "C" PILLAR) SIG SGND RPRB RPRE LPR RHRE SLIDING ROOF CONTROL ECU (IN LEFT REAR OF LUGGAGE COMPT) SWE CLS VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE