Lexus LS IV (2006-2012) rear junction block ecu Wiring diagrams

18 19 CANN CANP 25 24 CANP CANN 4- SEATER 5- SEATER 9 10 CANP CANN ACCD BLK WIRE BLU WIRE CANH CANL HZSW RDY SPD CANN CANP D-ACC FUSE DCTY SWIL TSW DOOR LOCKS SYSTEM DRIVER SIDE J/B (LEFT END OF DASH) DRIVING SUPPORT ECU ASSEMBLY (LEFT KICK PANEL) FSPT FUSE GRN WIRE HAZ CANN CANP HDLC HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IG GSW LCTY INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM LEFT FRONT MULTIPLEX NETWORK DOOR ECU (DRIVER'S DOOR) LEFT FRONT POWER SEAT CONTROL ECU, SWITCH (UNDER DRIVER'S SEAT) LEFT REAR MULTIPLEX NETWORK DOOR ECU (LEFT REAR DOOR) LT BLU WIRE LT GRN WIRE MAIN BODY ECU (LEFT END OF DASH) ORG/ WIRE PNK INDW INDS WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER TRUNK LID CONTROL ECU (LEFT SIDE OF LUGGAGE COMPT) REAR CONSOLE SWITCH REAR JUNCTION BLOCK ECU RED WIRE SHIFT INTERLOCK SYSTEM SLP SLR+ SUPPLEMENTAL RESTRAINTS SYSTEM INTERIOR LIGHTS SYSTEM TMSW TRNL TRNR TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM YEL WIRE

11 11 10 10 W/ CONSOLE W/ ROOF BACK BATTERY COOLING BLOWER ASSEMBLY BLK WIRE BRN WIRE COOLING BOX ASSEMBLY (4-SEATER) DISC PLAYER ASSEMBLY DISC PLAYER ASSEMBLY, HEADPHONE TERMINAL FROM FROM J/C FUEL LID COURTESY SWITCH INV RELAY J/C LEFT LUGGAGE REAR ELECTRICAL LIGHT KEY ASSEMBLY SWITCH LEFT REAR ABSORBER CONTROL ACTUATOR LUGGAGE COMPARTMENT DOOR LOCK CYLINDER LUGGAGE DOOR CLOSER ASSEMBLY LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) OBJECT RECOGNITION BATTERY ECU COOLING SHIELD BLOWER ASSEMBLY 2 OTTOMAN RECLINING SENSOR (IF EQUIPPED) POWER STEERING CONVERTER ASSEMBLY POWER TRUNK LID CONTROL SWITCH REAR HEIGHT CONTROL VALVE SUB- ASSEMBLY 2 REAR JUNCTION BLOCK ECU RELAY RIGHT REAR ABSORBER CONTROL ACTUATOR RIGHT REAR LEFT REAR COMBINATION COMBINATION LIGHT LIGHT ASSEMBLY ASSEMBLY RIGHT REAR LIGHT ASSEMBLY RIGHT REAR MULTIPLEX NETWORK DOOR ECU RIGHT REAR POWER SEAT CONTROL ECU ASSEMBLY RIGHT REAR POWER SEAT MOTOR ASSEMBLY RIGHT REAR SEAT RIGHT REAR SEAT CLIMATE CONTROL ECU RIGHT REAR SEAT HEADREST ADJUSTER SUB ASSEMBLY 1 RR-ACC RELAY SEAT VIBRATION ECU SEAT VIBRATOR SWITCH STEREO COMPONENT AMPLIFIER TELEVISION DISPLAY ASSEMBLY TELEVISION SWITCH, VOLUME ASSEMBLY TO J/C VOLTAGE INVERTER ASSEMBLY WHT WIRE WHT/BLK WIRE YEL WIRE

16 15 CANP CANN 2 3 CANP CANN 20 21 CANH CANL 22 23 CANP CANN 25 24 CANP CANN 27 28 CANH CANL 28 20 CANN CANP 5 14 CANP CANN 5 6 CANH CANL 5 6 PNK CANP CANN WIRE 9 10 CANN CANP 9 10 CANP CANN BLK WIRE BLU WIRE BRN WIRE CANN CANN CANP CANP CERTIFICATION ECU ASSEMBLY (LEFT END OF DASH) COMBINATION METER GRN WIRE LEFT FRONT MULTIPLEX NETWORK DOOR ECU (DRIVER'S DOOR) LEFT FRONT POWER SEAT CONTROL ECU, SWITCH (UNDER DRIVER'S SEAT) LEFT REAR MULTIPLEX NETWORK DOOR ECU (LEFT REAR DOOR) MAIN BODY ECU (LEFT END OF DASH) MULTIPLEX TILT, TELESCOPIC ECU (ON STEERING COLUMN) OUTER MIRROR SWITCH ASSEMBLY PNK WIRE POWER TRUNK LID CONTROL ECU (LEFT SIDE OF LUGGAGE COMPT) REAR CONSOLE SWITCH REAR JUNCTION BLOCK ECU RED WIRE SEATER SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING SENSOR (IN STEERING COLUMN) VIO WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

13 14 CANL CANH 18 34 27 17 VC NE- NE+ 10 6 4 5 PNK WIRE BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENSOR DIRECT FUEL INJECTOR ASSEMBLY 1 (LEFT SIDE OF INTAKE MANIFOLD) DISP DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B (LEFT END OF DASH) ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ RR HYBRID VEHICLE CONTROL ECU INJECTOR DRIVER (BANK 1) (CENTER REAR OF ENGINE COMPT) LGLB LT BLU WIRE LT GRN WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MPXB NCA WIRE NE- NE VC P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PIND PNK WIRE PORT FUEL INJECTOR ASSEMBLY 1 REAR JUNCTION BLOCK ECU RED WIRE RESET+ RR MPX B 1 FUSE RR MPX-B 2 FUSE SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY STEERING PAD SWITCH ASSEMBLY W/ MODULATOR STEERING SWITCH ECU SYSTEM TELEVISION SWITCH, VOLUME ASSEMBLY TOP OF ENGINE) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 AGND VV+ VAR+ VAL+ SG VV- VA- ADPG 28 20 CANN CANP 31 32 TX+ TX- 6 5 CANL CANH AGND ALI ALO ARI ARO ARON AIR ASGN AUTO AUXI AUXO BLK WIRE BLU WIRE BRN WIRE CENTER JUNCTION BOX 3 (RIGHT SIDE OF DASH) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM REAR SEAT COMPUTER DATA LINES SYSTEM REAR SEAT ENTERTAINMENT CIRCUIT DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B ELECTRIC PARKING BRAKE SWITCH ENTERTAINMENT CIRCUIT GRN WIRE GRY WIRE IEEE IEEE CONNECTOR (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE LUGGAGE COMPT) MAIN BODY ECU (LEFT END OF DASH) MI+ MO- MULTI-MEDIA MODULE NAVIGATION ASSEMBLY (W/ DVD) NCA WIRE NTSC NTSC VV+ NTSO ORG/ WIRE PARKING ASSIST ECU (RIGHT END OF DASH) PARKING BRAKE ECU ASSEMBLY (LEFT SIDE OF LUGGAGE COMPT) PKBO PNK WIRE PULL PUSH QUARTER PANEL) RADIO ANTENNA RADIO RECEIVER ASSEMBLY REAR JUNCTION BLOCK ECU REAR SEAT ENTERTAINMENT CIRCUIT RED WIRE SG VV- SGND SLD SLDI STEREO JACK ADAPTER SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM UDI- UDO+ UESG UJSG ULO+ UPO URO+ VGN VIO WIRE VLI VRI W/ HDD WHT WIRE WHT/BLK WIRE WUI WUO YEL WIRE

15 16 6 5 CANN CANP CANL CANH 2 3 4 5 6 +5 DATA ASEL RSSI GND 2 7 OPN CTY CLS +B FSW M+ M- 28 20 CANN CANP 4 17 PGND SG ASEL BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER JUNCTION BLOCK J/B 3 CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CERTIFICATION ECU ASSEMBLY (LEFT END OF DASH) COMPUTER DATA LINES SYSTEM D-ACC FUSE DATA LINES COMPUTER DOOR CONTROL RECEIVER (RIGHT REAR OF LUGGAGE COMPT) DRIVER SIDE J/B (LEFT END OF DASH) FUSE GRN WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START LCTY LGLB LOPN LPSW PAWL LT BLU WIRE LUGGAGE COMPARTMENT DOOR LOCK CYLINDER (CENTER REAR OF LUGGAGE COMPT LID) LUGGAGE COMPARTMENT DOOR OPENING CANCEL SWITCH ASSEMBLY LUGGAGE DOOR CLOSER ASSEMBLY (CENTER REAR OF LUGGAGE COMPT LID) LUGGAGE DOOR OPENING SWITCH ASSEMBLY LUGGAGE ELECTRICAL KEY SWITCH (CENTER REAR OF LUGGAGE COMPARTMENT LID) LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MAIN BODY ECU MPXB PASSENGER SIDE J/B (RIGHT END OF DASH) POWER TRUNK LID CONTROL ECU (LEFT SIDE OF LUGGAGE COMPT) POWER TRUNK LID CONTROL SWITCH PTL FUSE REAR JUNCTION BLOCK ECU RED WIRE RED/BLK WIRE RR MPX B 1 FUSE RR MPX-B 2 FUSE RSSI SECURITY FUSE SYSTEM TKUL TMSW TSW VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 AGND VV+ VAR+ VAL+ SG VV- VA- ADPG 28 20 CANN CANP 31 32 TX+ TX- 6 5 CANL CANH AGND ALI ALO ARI ARO ARON AIR ASGN AUTO AUXI AUXO BLK WIRE BLU WIRE BRN WIRE CENTER JUNCTION BOX 3 (RIGHT SIDE OF DASH) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM REAR SEAT COMPUTER DATA LINES SYSTEM REAR SEAT ENTERTAINMENT CIRCUIT DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B ELECTRIC PARKING BRAKE SWITCH ENTERTAINMENT CIRCUIT GRN WIRE GRY WIRE IEEE IEEE CONNECTOR (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE LUGGAGE COMPT) MAIN BODY ECU (LEFT END OF DASH) MI+ MO- MULTI-MEDIA MODULE NAVIGATION ASSEMBLY (W/ DVD) NCA WIRE NTSC NTSC VV+ NTSO ORG/ WIRE PARKING ASSIST ECU (RIGHT END OF DASH) PARKING BRAKE ECU ASSEMBLY (LEFT SIDE OF LUGGAGE COMPT) PKBO PNK WIRE PULL PUSH QUARTER PANEL) RADIO ANTENNA RADIO RECEIVER ASSEMBLY REAR JUNCTION BLOCK ECU REAR SEAT ENTERTAINMENT CIRCUIT RED WIRE SG VV- SGND SLD SLDI STEREO JACK ADAPTER SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM UDI- UDO+ UESG UJSG ULO+ UPO URO+ VGN VIO WIRE VLI VRI W/ HDD WHT WIRE WHT/BLK WIRE WUI WUO YEL WIRE

13 14 COMPUTER DATA LINES SYSTEM CANL CANH 15 16 CANN CANP 15 22 6 IG 28 20 CANN CANP 4 17 PGND SG 5 6 24 22 20 9 2 1 7 CANL CANH LOPN LCTY PAWL BDCY LCM+ LCM- HALF BLK WIRE BLU WIRE CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CLS COMPUTER DATA LINES SYSTEM CTY D-ACC FUSE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) FSM FUEL FUEL LID COURTESY SWITCH FUEL LID WITH MOTOR LOCK ASSEMBLY (BEHIND LEFT REAR WHEELWELL) FUEL OPN FUSE FUO FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START LGLB LT GRN WIRE LUGGAGE LUGGAGE COMPARTMENT DOOR LOCK CYLINDER (CENTER REAR OF LUGGAGE COMPT LID) LUGGAGE COMPARTMENT DOOR OPENING CANCEL SWITCH ASSEMBLY LUGGAGE DOOR CLOSER ASSEMBLY (CENTER REAR OF LUGGAGE COMPARTMENT LID) LUGGAGE DOOR OPENING SWITCH ASSEMBLY LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MAIN BODY ECU DRIVER SIDE J/B (LEFT END OF DASH) MPXB OPN PASSENGER SIDE J/B (RIGHT END OF DASH) PNK LIDO WIRE PNK WIRE POWER TRUNK LID CONTROL ECU (LEFT SIDE OF LUGGAGE COMPT) REAR JUNCTION BLOCK ECU RED WIRE RED/BLK WIRE RR MPX B 1 FUSE RR MPX-B 2 FUSE TKUL TMSW TSW VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE