Lexus LS IV (2006-2012) micro computer Wiring diagrams

ABS MAIN 2 FUSE ABS MTR 2 FUSE BLK WIRE BLU WIRE BRAKE HOLD IND BRN WIRE BUZZER COMBINATION METER COMPUTER DATA LINES SYSTEM ECU-IG FUSE ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) ENGINE ROOM R/B 3 ABS MTR 2 RELAY FLA- FLA+ FL+ FL- PNK WIRE FLR+ FLR- GRN WIRE GRY WIRE HOLD IND HOT AT ALL TIMES HOT IN ON OR START I/F I/F LEFT FRONT SPEED SENSOR LT GRN WIRE MASTER IND MICRO COMPUTER ORG/ WIRE P-J/B FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PFL PNK WIRE POWER SUPPLY PRR- RED WIRE RIGHT REAR SPEED SENSOR RR+ RR- CANH CANL RRA- RRA+ RRR+ RRR- PNK WIRE SKID CONTROL ECU ASSEMBLY (LEFT REAR OF ENGINE COMPT) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+BC ABS IND. ABS MAIN 2 FUSE ABS MAIN 4 FUSE ABS MTR 2 FUSE BLK WIRE BLU WIRE BRAKE CONTROL POWER SUPPLY (RIGHT REAR OF LUGGAGE COMPT) BRAKE IND BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM CONTROLLED ELECTRONICALLY ECU-IG FUSE ENA ENGINE ABS ROOM MTR 2 R/B 3 RELAY ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) FAIL FLA- FLA+ FL+ FL- PNK WIRE FLR+ FLR- FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START INDICATOR SWITCH (RIGHT REAR WHEEL HUB ASSEMBLY) LEFT FRONT SPEED SENSOR LEFT FRONT SPEED SENSOR/ LEFT FRONT PAD WEAR INDICATOR SWITCH LT GRN WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MASTER IND MICRO COMPUTER ORG/ WIRE P-J/B FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PFL PNK WIRE POWER SUPPLY PRR- RED WIRE RIGHT REAR HEIGHT CONTROL SENSOR/ RIGHT REAR SPEED SENSOR/ RIGHT REAR PAD WEAR RIGHT REAR SPEED SENSOR RR+ RR- CANH CANL RRA- RRA+ SKID CONTROL ECU ASSEMBLY (LEFT REAR OF ENGINE COMPT) SLIP IND STP TS VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 RZG SRZG RZV TRQV 1 2 3 4 5 6 7 8 9 10 11 COMPUTER DATA LINES SYSTEM 1 2 PIG VGND 5 7 1 IG ASST BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM EPS ECU FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START HOT IN ON OR START ENGINE ROOM J/B 2 E/G (RIGHT SIDE OF ENGINE FUSE COMPT) HOT IN ON OR START LUGGAGE ROOM J/B (LEFT SIDE FUSE OF LUGGAGE COMPT) IG ASST INCS INSN JUNCTION CONNECTOR LT BLU WIRE MICRO COMPUTER NCA WIRE OUCS OUSN P-J/B FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PIG PGND +B POWER POWER STEERING CONVERTER ASSEMBLY POWER STEERING ECU ASSEMBLY (RIGHT SIDE OF ENGINE COMPT) POWER STEERING MOTOR (FRONT CENTER OF ENGINE COMPT) PS IND RED WIRE RED/BLK WIRE RED/BLU WIRE RZCS RZG RZSN RZSN RZCS INSN INCS OUSN OUCS RZV STEERING TORQUE SENSOR (FRONT OF ENGINE COMPT) SUPPLY WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 IG LR LL 16 15 24 23 SIDR CRAR SIDL CRAL BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CANN CANP CANP CANN FMIG CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM D MPX-B 1 FUSE DIODE (TURN SIGNAL) (LEFT END OF DASH) DRIVER SIDE J/B (LEFT END OF DASH) E/G ECU-B FUSE ENERGIZED ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) FR CTRL ALT FR CTRL BAT FUSE GRN WIRE GRY WIRE HAZ FUSE HAZ TURN SIGNAL FLASHER ASSEMBLY (LEFT SIDE OF DASH) HOT AT ALL TIMES HOT AT ALL TIMES DRIVER SIDE J/B (LEFT END OF DASH) STOP FUSE I/F POWER SUPPLY J/C LEFT OUTER REAR VIEW MIRROR (AT MIRROR) LEFT TURN IND LIGHT HEADLIGHT ASSEMBLY LT BLU WIRE LT GRN WIRE MARKER MASTER IND MICRO COMPUTER MPXB MULTIPLEX NETWORK FRONT LIGHT ECU (RIGHT FRONT OF ENGINE COMPT) P-J/B FUSE PARKING PNK BATB ALTB WIRE PNK EL ER WIRE PNK WIRE RIGHT HEADLIGHT ASSEMBLY RIGHT OUTER REAR VIEW MIRROR (AT MIRROR) RIGHT TURN IND STOP LIGHT SWITCH ASSEMBLY (LEFT SIDE OF DASH) TAIL IND (CANADA) TRN+ TRNI TURN VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

12 17 1 MJ 15 16 CANN CANP 2 8 1 7 5 6 IG 6 5 3 CLTB CLTS CLTE 7 1 4 +B 7 21 18 19 20 RCTY PCTY CLTE CLTS CLTB AUTOMATIC HIGH BEAM SENSOR LIN AUTOMATIC LIGHT CONTROL SENSOR (CENTER OF DASH) BLK WIRE BLU WIRE BRN WIRE CAN I/F CAN I/F CANL CANH CANN CANP CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM COURTESY SWITCH D MPX-B 2 FUSE DCTY DIMMER SWITCH DRIVER SIDE J/B (LEFT END OF DASH) ENGINE ROOM FOG SWITCH HEADLIGHT DIMMER SWITCH FRONT FOG IND FUSE GRN WIRE GRY WIRE HEAD AUTO HEAD CANP CANN PNK WIRE HEAD IND (USA) HIGH HIGH MASTER BEAM BEAM IND IND AUTO IND HIGH LOW FLASH HOT AT ALL TIMES HOT IN ON OR START HYBRID VEHICLE CONTROL ECU (LEFT FRONT OF ENGINE COMPT) IG 5 17 INNER REAR VIEW MIRROR ASSEMBLY (W/ AUTOMATIC HIGH BEAM SYSTEM) J/C LCTY LEFT REAR DOOR COURTESY SWITCH (LEFT "C" PILLAR) LIGHT CONTROL SWITCH LOW FLASH LT BLU WIRE LUGGAGE ROOM J/B MAIN BODY ECU (LEFT END OF DASH) MICRO COMPUTER MPX+B MPX+B MPXB OFF TAIL ORG/ WIRE OVERHEAD MODULE (ROOF CONSOLE) P-D/C CUT FUSE P-J/B J/B 2 (RIGHT SIDE OF ENGINE COMPT) FUSE PARK/NEUTRAL POSITION SWITCH (RIGHT SIDE OF TRANSMISSION) PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE POWER SUPPLY RED WIRE RIGHT FRONT DOOR COURTESY SWITCH (RIGHT "B" PILLAR) RIGHT REAR DOOR COURTESY SWITCH (RIGHT "C" PILLAR) RR ECU-B FUSE VIO WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY 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 IG 14 13 PNK WIRE 4 2 1 5 3 CV+ CGND CB+ CV- LS 5 2 3 4 IGB SGND BLK WIRE BLU WIRE BRN WIRE CANN CANP CB+ CCHG CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CGND CANH COMPUTER DATA LINES SYSTEM COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CV+ CV- CANL D MPX-B 2 FUSE DRIVER MONITOR CAMERA (LEFT SIDE OF DASH) DRIVER MONITOR ECU ASSEMBLY (LEFT END OF DASH) DRIVER SIDE J/B (LEFT END OF DASH) DRIVING SUPPORT ECU ASSEMBLY (LEFT KICK PANEL) ENGINE ROOM J/B 2 FCAS FUSE GND SGND CCS GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGB LS CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) LT GRN WIRE MASTER MICRO COMPUTER MILLIMETER WAVE RADAR SENSOR ASSEMBLY (CENTER OF FRONT GRILLE) MPX+B IND NCA WIRE ORG/ WIRE P J/B (RIGHT SIDE OF FUSE ENGINE COMPT) PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE POWER SUPPLY PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY RED WIRE STP+ VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 16 +BS PNK WIRE 1 3 5 BI SI EI 1 5 3 2 4 6 BI EI SI BO SO EO 15 16 CANH CANL 34 27 18 NE- NE+ VC 5 3 1 2 4 6 EI SI BI BO SO EO 6 4 2 1 3 5 EO SO BO BI SI EI 6 4 2 1 3 5 PNK EO SO BO BI SI EI WIRE BLK WIRE BLU WIRE BRN WIRE CB+ CB+ CV+ CGND COMBINATION METER COMPUTER DATA LINES SYSTEM CV+ D MPX-B 2 FUSE DRIVER SIDE J/B (LEFT END OF DASH) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) ENGINE ROOM J/B 2 GRN WIRE HOT AT ALL TIMES HOT IN ON OR START HYBRID VEHICLE CONTROL ECU (LEFT FRONT OF ENGINE COMPT) LEFT FRONT CENTER ULTRASONIC SENSOR 1 (LEFT SIDE OF FRONT BUMPER FASCIA) LEFT FRONT ULTRASONIC SENSOR 1 (LEFT SIDE OF FRONT BUMPER FASCIA) LEFT REAR CENTER ULTRASONIC SENSOR 1 (LEFT SIDE OF REAR BUMPER FASCIA) LEFT REAR ULTRASONIC SENSOR 1 (LEFT SIDE OF REAR BUMPER FASCIA) MASTER MICRO COMPUTER MPX+B IND NCA WIRE NE- NE VC ORG/ WIRE P J/B (RIGHT SIDE OF FUSE ENGINE COMPT) PARK/NEUTRAL RB POSITION SWITCH (RIGHT SIDE OF TRANSMISSION) PARKING ASSIST ECU (RIGHT END OF DASH) PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE RED WIRE RIGHT FRONT CENTER ULTRASONIC SENSOR 1 (RIGHT SIDE OF FRONT BUMPER FASCIA) RIGHT FRONT ULTRASONIC SENSOR 1 (RIGHT SIDE OF FRONT BUMPER FASCIA) RIGHT REAR CENTER ULTRASONIC SENSOR 1 RIGHT REAR ULTRASONIC SENSOR 1 (RIGHT SIDE OF REAR BUMPER FASCIA) SUPPLY POWER TELEVISION CAMERA ASSEMBLY (CENTER REAR OF LUGGAGE COMPT LID) WHT WIRE YEL WIRE

15 16 10 CANN CANP 9 10 8 COMPUTER DATA LINES SYSTEM CANP CANN BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CERTIFICATION ECU ASSEMBLY (LEFT END OF DASH) CLS CLOSE COMBINATION METER COMPUTER DATA LINES SYSTEM D MPX-B 2 FUSE DCTY DOOR CONTROL RECEIVER (RIGHT REAR OF LUGGAGE COMPT) DOWN DOWN DRIVER SIDE J/B (LEFT END OF DASH) DRIVER'S DOOR ELECTRICAL KEY ANTENNA (RIGHT "C" PILLAR) ENGINE ROOM J/B 2 FUSE GND RSSI ASEL DATA +5 GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START J/C KEY LOCK KUL LEFT FRONT MULTIPLEX NETWORK DOOR ECU LOCK ASSEMBLY LSWE MAIN BODY ECU (LEFT END OF DASH) MASTER IND MICRO COMPUTER MPX-B NCA WIRE OPN OPN DWN CLS UP P-J/B FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PNK KL WIRE PNK WIRE RDA ASEL RSSI CANP CANN RED WIRE S/ROOF FUSE SLIDING ROOF CONTROL SWITCH OVERHEAD MODULE (ROOF CONSOLE) SLIDING ROOF ECU (ROOF CONSOLE) SUPPLY POWER UL KEY UNLOCK UP UP WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 +BO 1 2 3 4 5 6 7 8 BMV BMU BMW 1 2 3 7 8 9 10 IG ESS BAT BLK WIRE BLU WIRE BRN WIRE CAN I/F CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B ENGINE ROOM J/B 2 FUSE GRN WIRE HOT AT ALL TIMES HOT IN ON OR START HOT IN ON OR START PASSENGER SIDE J/B (RIGHT END OF DASH) LT GRN WIRE MASTER IND MICRO COMPUTER NCA WIRE P MPX B FUSE P-J/B FUSE (RIGHT SIDE OF ENGINE COMPT) PGND PIG CAN- +BI PNK IG CAN+ COMPUTER DATA LINES SYSTEM WIRE PNK WIRE POWER RED WIRE RV SIL STEERING ACTUATOR ASSEMBLY (LEFT FRONT OF ENGINE COMPARTMENT) STEERING CONTROL ECU STEERING SENSOR (IN STEERING COLUMN) SUPPLY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 USB USBG VOT+ USBV VOT- VOR- VOR+ 20 21 18 COMPUTER DATA LINES SYSTEM I/F 4 10 FR+ FR- 7 2 TMUT SPD ANTENNA ANTENNA BLK WIRE BLU WIRE BRN WIRE CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) COMBINATION METER COMPUTER DATA LINES SYSTEM DCM DCM (TELEMATICS TRANSCEIVER) (RIGHT END OF DASH) DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B (LEFT END OF DASH) ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) GRN WIRE GSW HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IGN FUSE INSTRUMENT CLUSTER SYSTEM LT BLU WIRE LT GRN WIRE MASTER IND MICRO COMPUTER MICROPHONE, MICROPHONE AMPLIFIER MIN MPXB MUTE MCO+ MCO- NCA WIRE ORG/ WIRE OVERHEAD MODULE (ROOF CONSOLE) P-ACC FUSE P-J/B FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE POWER SUPPLY RADIO 1 FUSE RED WIRE RIGHT FRONT SPEAKER ASSEMBLY 2 SGND SGND MCVD MCI+ MCI- SIG PNK (+) WIRE SOS SWITCH SPDP SPO+ SPO- PNK WIRE STEREO COMPONENT AMPLIFIER ASSEMBLY (RIGHT REAR OF LUGGAGE COMPT) SUPPLEMENTAL RESTRAINTS SYSTEM TELEPHONE ANTENNA ASSEMBLY (FRONT OF CENTER CONSOLE) UGND USBV VIO WIRE VOR- VOT+ WHT WIRE WHT/BLK WIRE YEL WIRE