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

28 20 18 26 5 7 25 COMPUTER CANN CANP TSD TSB RMGV SMOK SSRE DATA LINES SYSTEM AIR OUTLET DAMPER CONTROL SERVO MOTOR (DRIVER SIDE FRONT A/C REAR AIR FLOW) AIR OUTLET DAMPER CONTROL SERVO MOTOR (PASSENGER SIDE FRONT A/C REAR AIR FLOW) BLK WIRE BLOWER MOTOR BLU WIRE BRN WIRE BRRB BRRG BURR CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CONNECTOR CONNECTOR HOUSING COLOR (BLACK) CONNECTOR HOUSING COLOR (BLUE) CONNECTOR HOUSING COLOR (NATURAL) ENGINE ROOM R/B 4 (LEFT REAR OF ENGINE COMPT) FUSE GND +B SI 5 9 13 GRN WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES ENGINE ROOM PTC HTR 1 FUSE R/B 4 (LEFT REAR OF ENGINE COMPT) HOT AT ALL TIMES PTC HTR 3 FUSE HOT IN ON OR START DRIVER SIDE J/B (LEFT END OF DASH) HOUSING COLOR (GRY) WIRE HOUSING COLOR (RED) WIRE INTERIOR CONVERSION SERVO MOTOR LT BLU WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) PTC HTR 1 RELAY PTC HTR 3 RELAY REAR COOLING UNIT ASSEMBLY (LEFT "C" PILLAR) REAR DIFFUSE SERVO MOTOR REAR EMISSION SERVO MOTOR REAR JUNCTION BLOCK ECU REAR MAGNETIC VALVE RED WIRE RMGV SMOKE SENSOR SSRE THERMISTOR VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BACKUP BACKUP LAMPS CIRCUIT BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER STOP LIGHT ASSEMBLY COMPUTER DATA LINES SYSTEM DRIVING SUPPORT ECU ASSEMBLY (LEFT KICK PANEL) FUSE GRN WIRE HOT AT ALL TIMES HYBRID VEHICLE CONTROL ECU (LEFT FRONT OF ENGINE COMPT) LEFT REAR COMBINATION LIGHT ASSEMBLY LEFT REAR LIGHT ASSEMBLY LGLB LICENSE PLATE LIGHT ASSEMBLY LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MARKER MPXB ORG/ WIRE RADIO SETTING CONDENSER (LEFT "C" PILLAR) REAR JUNCTION BLOCK ECU RED WIRE RELAY ENERGIZED RIGHT REAR COMBINATION LIGHT ASSEMBLY RIGHT REAR LIGHT ASSEMBLY RR MPX B 1 FUSE RR MPX-B 2 FUSE SHIFT LOCK CONTROL ECU (IN CENTER CONSOLE) SKID CONTROL ECU ASSEMBLY (LEFT REAR OF ENGINE COMPT) STOP STOP LP 1 FUSE STOP LP 2 FUSE T/P TAIL FUSE TAIL/STOP TURN VIO WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BRAKE FUEL CONTROL LID POWER OPENER SUPPLY MOTOR BRN WIRE DISC DISC PLAYER PLAYER ASSEMBLY ASSEMBLY, HEADPHONE TERMINAL INV RELAY LEFT REAR COMBINATION LIGHT LEFT REAR SEAT CLIMATE CONTROL ECU LEFT REAR SUSPENSION CONTROL ACTUATOR LICENSE PLATE LIGHT LUGGAGE CLOSER MOTOR LUGGAGE COMPARTMENT DOOR LIGHT LUGGAGE COMPARTMENT DOOR LOCK CYLINDER LUGGAGE ELECTRICAL KEY SWITCH LUGGAGE REAR A/C ROOM BLOWER LIGHT ASSEMBLY LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) OBJECT DOOR CONTROL RECOGNITION RECEIVER ECU POWER TRUNK LID SWITCH REAR FRONT CONSOLE CONSOLE BOX LIGHT BOX LIGHT ASSEMBLY ASSEMBLY REAR JUNCTION BLOCK ECU REAR SUNSHADE RIGHT OTTOMAN RECLINING MOTOR, SENSOR RIGHT REAR COMBINATION LIGHT RIGHT REAR POWER SEAT CONTROL ECU RIGHT REAR POWER SEAT MOTOR, POSITION SENSOR RIGHT REAR POWER SEAT POSITION SENSOR (FOLD POSITION) RIGHT REAR REAR HEIGHT SUSPENSION CONTROL CONTROL SOLENOID ACTUATOR VALVE RIGHT REAR RIGHT REAR HEADREST POWER SEAT CONTROL MOTOR, ECU POSITION SENSOR RIGHT REAR SEAT CLIMATE CONTROL ECU RIGHT RIGHT REAR POWER REAR SEAT DOOR CONTROL CONTROL ECU ECU RR-ACC RELAY RELAY SEAT VIBRATION ECU SEAT VIBRATOR SWITCH STEREO COMPONENT AMPLIFIER TELEVISION DISPLAY ASSEMBLY W/ TELEVISION DISPLAY ASSEMBLY (CONSOLE TYPE) W/ TELEVISION DISPLAY ASSEMBLY (ROOF TYPE) WHT WIRE WHT/BLK WIRE YEL WIRE

13 14 CANL CANH 18 34 27 VC NE- NE+ PNK WIRE 4 6 5 PNK WIRE BDCY BLK WIRE BLU WIRE BRN WIRE CANN CANP COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENSOR CUTD D-ACC FUSE DCM (TELEMATICS TRANSCEIVER) (RIGHT END OF DASH) DCTY DISP DISPLAY, NAVIGATION MODULE DISPLAY DRIVER SIDE J/B (LEFT END OF DASH) ELECTRIC POWER CONTROL ECU BCUT ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FRONT PAD WEAR INDICATOR SWITCH FUEL INJECTOR (DIRECT INJECTION 1) (LEFT SIDE OF INTAKE MANIFOLD) FUEL INJECTOR (PORT INJECTION 1) (LEFT SIDE OF INTAKE MANIFOLD) FUEL SENDER GAUGE (LEFT SIDE OF FUEL TANK) FUEL SENDER GAUGE (SUB) (RIGHT SIDE OF FUEL TANK) FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INJECTOR DRIVER (BANK 1) (CENTER REAR OF ENGINE COMPT) J/B 3 (RIGHT SIDE OF DASH) J/B 4 (RIGHT SIDE OF DASH) J/B 5 (LEFT SIDE OF DASH) LCTY LEFT FRONT DOOR COURTESY SWITCH (LEFT "B" PILLAR) LEFT REAR DOOR COURTESY SWITCH (LEFT "C" PILLAR) LEFT REAR HEIGHT CONTROL SENSOR (RIGHT REAR WHEELWELL) LGLB LT BLU WIRE LT GRN WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MAIN BODY ECU MPXB NCA WIRE NE NE- VC PNK WIRE P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PCTY PIND PNK WIRE RCTY REAR JUNCTION BLOCK ECU REAR PAD WEAR INDICATOR SWITCH REAR SEAT ENTERTAINMENT TABLE SWITCH RED WIRE RESET+ RIGHT FRONT DOOR COURTESY SWITCH (RIGHT "B" PILLAR) RIGHT REAR DOOR COURTESY SWITCH (RIGHT "C" PILLAR) RL+ RL- 7 8 RR MPX B 1 FUSE RR MPX-B 2 FUSE SPDP STEERING PAD SWITCH STEERING PAD SWITCH W/ MODULATOR STEERING SWITCH ECU STEREO COMPONENT AMPLIFIER (RIGHT REAR OF LUGGAGE COMPT) TOP OF ENGINE) TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE W/ MULTI DISPLAY WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 AGND VV+ VAR+ VAL+ SG VV- VA- ADPG 2 4 1 3 CV+ CB+ CV- CGND 28 20 CANN CANP 31 32 TX+ TX- 6 5 CANL CANH AGND ALO ARO ARON AIR ASGN AUXO BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM REAR SEAT DISPLAY, NAVIGATION MODULE DISPLAY ENTERTAINMENT CIRCUIT GRN WIRE IEEE IEEE CONNECTOR (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MAIN BODY ECU (LEFT END OF DASH) MULTI-MEDIA MODULE NAVIGATION ASSEMBLY (W/ DVD) (RIGHT SIDE OF DASH) NCA WIRE NTSC VV+ NTSO V+ CA+ ORG/ WIRE PARKING ASSIST ECU (RIGHT END OF DASH) PKBO PNK WIRE REAR JUNCTION BLOCK ECU REAR SEAT ENTERTAINMENT CIRCUIT RED WIRE SG VV- SGND STEREO JACK ADAPTER 1 SUPPLEMENTAL RESTRAINTS SYSTEM TELEVISION CAMERA (CENTER REAR OF LUGGAGE COMPT LID) UDI- UDO+ UESG UJSG ULO+ UPI UPO URO+ V- CGND VGN VIO WIRE VLI VRI W/ HDD WHT WIRE YEL WIRE

ABS MAIN 4 FUSE AIR CONDITIONING SYSTEM AIR EXTERIOR CONDITIONING, LIGHTS DOOR LOCKS, SYSTEM POWER WINDOWS SYSTEMS AIR SUS FUSE AMP FUSE SECURITY FUSE ANTI-LOCK BRAKES SYSTEM ANTI-THEFT NAVIGATION, SYSTEM SOUND SYSTEMS B FAN RLY FUSE BATT BATT FAN 2 FAN 1 RELAY RELAY BATTERY BLK WIRE BLU WIRE D DOOR 1 FUSE HAZ FUSE D DOOR 2 FUSE D RR DOOR FUSE DC/DC FUSE DEFOG FUSE FUSE DEFOGGER SYSTEM E/G E/G R/B BATT FUSE E/G R/B DC/DC FUSE E/G RM 1 FUSE ELECTRONIC POWER STEERING SYSTEM ELECTRONIC SUSPENSION SYSTEM ENGINE CONTROLS SYSTEM EPS FUSE FROM FUSIBLE LINK BLOCK ASSEMBLY 2 (DIAGRAM 1 OF 6) FUSE FUSIBLE LINK MAIN BLOCK FUSE ASSEMBLY GRN WIRE GRY WIRE HTR FUSE LH J/B BATT FUSE LH J/B DC/DC FUSE LUG J/B BATT FUSE LUG J/B DC/DC FUSE NOISE FILTER NOISE FILTER (GHOST BUSTER) (RIGHT REAR OF LUGGAGE COMPT) OIL E/G EFI PMP RM B FUSE FUSE FUSE ORG/ WIRE P J/B P J/B H LP FAN 1 DC/DC CLN FUSE FUSE FUSE PNK WIRE POWER WINDOWS, DOOR LOCKS SYSTEMS PTC HTR FUSE REAR JUNCTION BLOCK ECU RED WIRE RR A/C FUSE RR ECU B FUSE E PKB FUSE SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK, EXTERIOR LIGHTS, TRANSMISSIONS, ANTI-LOCK BRAKES, SYSTEMS STOP FUSE STOP LP 1 FUSE STOP LP 2 FUSE STR LOCK FUSE TAIL FUSE TO DRIVER SIDE J/B (DIAGRAM 3 OF 6) TO ENGINE ROOM ENGINE J/B 2 CONTROLS, (DIAGRAM TRANSMISSIONS 5 OF 6) SYSTEMS TO ENGINE ROOM J/B 2 (DIAGRAM 5 OF 6) TO ENGINE ROOM R/B 2 (DIAGRAM 2 OF 6) TO ENGINE ROOM R/B 4 (DIAGRAM 2 OF 6) TO FUSIBLE LINK BLOCK ASSEMBLY 1 (DIAGRAM 1 OF 6) TO LUGGAGE ROOM J/B (DIAGRAM 4 OF 6) TO PASSENGER SIDE J/B (DIAGRAM 2 OF 6) TO PASSENGER SIDE J/B (DIAGRAM 3 OF 6) VGRS FUSE EFI 1 FUSE WHT WIRE WIPER/ COOLING WASHER FANS SYSTEM SYSTEM YEL WIRE

ABS AIR CONDITIONING, SEATS, INTERIOR LIGHTS, POWER WINDOWS SYSTEMS AMP FUSE ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CRUISE CONTROL, ANTI-LOCK BRAKES, ELECTRONIC POWER STEERING SYSTEMS DC- DOOR 1 FUSE DOOR 2 FUSE EFI EFI MAIN FUSE EFI MAIN RELAY ENGINE CONTROLS SYSTEM FROM FUSIBLE LINK BLOCK ASSEMBLY 1 (DIAGRAM 1 OF 6) FUSE GRY WIRE IGCT RELAY LGLB MAIN BODY ECU MPX-B FUSE MPXB NAVIGATION, SOUND SYSTEMS ORG/ WIRE P RR DOOR FUSE P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) POWER SWITCH PTC HTR 1 RELAY PTC HTR 1 FUSE PTC HTR 3 FUSE PTC HTR 3 RELAY RADIO 1 FUSE REAR JUNCTION BLOCK ECU RED WIRE RELAY RR MPX B 1 FUSE RR MPX-B 2 FUSE SEATS SYSTEM SEATS, NAVIGATION, INTERIOR LIGHTS, AIR CONDITIONING, DOOR LOCKS SYSTEMS SOUND SOUND SYSTEMS SYSTEMS TO ENGINE ROOM J/B 2 (DIAGRAM 5 OF 6) WHT WIRE WHT/BLK WIRE YEL WIRE

4- SEATER 5 SEATER W/O OTTOMAN AIR CONDITIONING, NAVIGATION SOUND, WARNING SYSTEMS AIR CONDITIONING, TRANSMISSIONS SYSTEMS ANTI-LOCK BRAKES SYSTEM B/ANC FUSE BANC BATTERY FAN RELAY BLK WIRE BLK/ WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM D RR SEAT FUSE ELECTRONIC POWER STEERING SYSTEM ELECTRONIC SUSPENSION, ELECTRONIC POWER STEERING SYSTEMS FROM AIR SUS RELAY (DIAGRAM 3 OF 6) FROM DRIVER SIDE J/B (DIAGRAM 3 OF 6) FROM FUSIBLE LINK BLOCK ASSEMBLY 2 (DIAGRAM 1 OF 6) FROM P P/SEAT 1 (DIAGRAM 3 OF 6) FUEL FUEL OPN FUSE RR S/SHADE FUSE FUSE GRN WIRE INTERIOR LIGHTS, ANTI-LOCK BRAKES, TRUNK, TAILGATE, FUEL DOORS SYSTEMS JUNCTION LT GRN WIRE ORG/ WIRE P/SEAT 2 FUSE PASSIVE RESTRAINT SYSTEM PNK WIRE PTL FUSE PSB FUSE OBD FUSE REAR CIGARETTE LIGHTER ASSEMBLY REAR CIGARETTE LIGHTER ASSEMBLY/ REAR POWER REAR JUNCTION BLOCK ECU REAR POWER OUTLET JUNCTION SOCKET (LEFT SIDE OF LUGGAGE COMPT) RED WIRE RELAY RL RR SEAT FUSE RELAY RR CIG FUSE RR SEAT FUSE RSB S/HTR FUSE SEATS SYSTEM SHIFT INTERLOCK SYSTEM SOCKET SUPPLEMENTAL RESTRAINTS SYSTEM SUPPLEMENTAL SEATS RESTRAINTS SYSTEM SYSTEM TO ENGINE ROOM J/B 2 (DIAGRAM 5 OF 6) TO INV RELAY (DIAGRAM 6 OF 6) TO LUGGAGE ROOM J/B (DIAGRAM 6 OF 6) VIO WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 AGND VV+ VAR+ VAL+ SG VV- VA- ADPG 2 4 1 3 CV+ CB+ CV- CGND 28 20 CANN CANP 31 32 TX+ TX- 6 5 CANL CANH AGND ALO ARO ARON AIR ASGN AUXO BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM REAR SEAT DISPLAY, NAVIGATION MODULE DISPLAY ENTERTAINMENT CIRCUIT GRN WIRE IEEE IEEE CONNECTOR (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MAIN BODY ECU (LEFT END OF DASH) MULTI-MEDIA MODULE NAVIGATION ASSEMBLY (W/ DVD) (RIGHT SIDE OF DASH) NCA WIRE NTSC VV+ NTSO V+ CA+ ORG/ WIRE PARKING ASSIST ECU (RIGHT END OF DASH) PKBO PNK WIRE REAR JUNCTION BLOCK ECU REAR SEAT ENTERTAINMENT CIRCUIT RED WIRE SG VV- SGND STEREO JACK ADAPTER 1 SUPPLEMENTAL RESTRAINTS SYSTEM TELEVISION CAMERA (CENTER REAR OF LUGGAGE COMPT LID) UDI- UDO+ UESG UJSG ULO+ UPI UPO URO+ V- CGND VGN VIO WIRE VLI VRI W/ HDD WHT WIRE YEL WIRE

1 2 11 3 CANP CANN 1 2 6 5 CANP CANN 20 28 CANP CANN 22 4 3 LMT MU MD 4 SEATER, 5 SEATER, W/O OTTOMAN 4-SEATER 5-SEATER 5 20 GND 5 SEATER W/ OTTOMAN 8 7 5 15 IG MPXB RSB LGLB BLK WIRE BLU WIRE BRN WIRE CANH COMPUTER DATA LINES SYSTEM CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) COMBINATION SWITCH ASSEMBLY COMPT) COMPUTER DATA LINES SYSTEM FUSE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START HYBRID VEHICLE CONTROL ECU (LEFT FRONT OF ENGINE COMPT) INTEGRATION CONTROL, PANEL ASSEMBLY LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE MPX P MPX B FUSE PARK/NEUTRAL POSITION SWITCH (RIGHT SIDE OF TRANSMISSION) PASSENGER SIDE J/B (RIGHT END OF DASH) PNK RSMD WIRE PNK WIRE REAR CONSOLE SWITCH (4-SEATER) REAR CONSOLE SWITCH (5-SEATER) REAR CURTAIN SWITCH ASSEMBLY REAR JUNCTION BLOCK ECU REAR SUNSHADE SWITCH REAR WINDOW SHADE ASSEMBLY RR MPX B 1 FUSE RR MPX-B 2 FUSE RR S/SHADE FUSE RSE RSL RSMU SUNSHADE REAR SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE