Lexus LS IV (2006-2012) center junction block j/b 4 (right side of dash) Wiring diagrams

10 22 7 6 LED+ LED- CYL CTYB 3 11 6 16 9 10 SIG CPUB BDR 6 3 11 BDR SIG CPUB 9 10 CANP CANN BCUT BDR BLK WIRE BLU WIRE CANN CANP CANP CANN CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CPUB CTYB CTYB CYL LED- LED+ CYL D RR DOOR FUSE D-ACC FUSE DCTY DOOR 1 FUSE DOOR 1 FUSE MPX-B FUSE DOOR 2 FUSE DOOR ECU (FRONT PASSENGER'S DOOR) DRIVER SIDE J/B DRIVER SIDE J/B (LEFT END FSPT FUSE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START HTR L/P LCTY LED LEFT FRONT DOOR COURTESY SWITCH (LEFT "B" PILLAR) LEFT FRONT MULTIPLEX NETWORK DOOR ECU (DRIVER'S DOOR) LEFT OUTER REAR VIEW MIRROR (AT MIRROR) LEFT REAR DOOR COURTESY LIGHT ASSEMBLY LEFT REAR DOOR COURTESY SWITCH (LEFT "C" PILLAR) LEFT REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LEFT REAR MULTIPLEX NETWORK DOOR ECU (LEFT REAR DOOR) LT GRN WIRE MAIN BODY ECU OF DASH) ORG/ WIRE OUTER FOOT LIGHT P RR DOOR FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) PCTY RCTY RED WIRE RIGHT FRONT DOOR COURTESY LIGHT RIGHT FRONT DOOR COURTESY SWITCH (RIGHT "B" PILLAR) RIGHT FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RIGHT FRONT MULTIPLEX NETWORK RIGHT OUTER REAR VIEW MIRROR (AT MIRROR) RIGHT REAR DOOR COURTESY SWITCH (RIGHT "C" PILLAR) SIG VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

12 17 11 GND 29 13 14 15 16 23 24 26 1 27 MSWE 3 6 16 4 8 9 10 1 11 SIG BDR 5 6 15 16 CANH CANL CANN CANP 7 4 2 1 5 3 1 2 3 MMRY BCUT BLK WIRE BLU WIRE BRN WIRE CANP CANN GND CPUB CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL CIRCUIT D DOOR 1 FUSE D DOOR 2 FUSE DCTY DOOR LOCK SWITCH DOWN DRIVER SIDE J/B (LEFT END OF DASH) FUSE GRN/BLK WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES PASSENGER P D/C CUT FUSE SIDE J/B (RIGHT END OF DASH) LEFT FRONT POWER SEAT LIFT POSITION SENSOR (UNDER DRIVER'S SEAT) LEFT FRONT SEAT HEADREST ADJUSTER MOTOR (DRIVER'S SEAT BACK) LEFT FRONT SEAT MEMORY SWITCH LOCK LT GRN WIRE MAIN BODY ECU (LEFT END OF DASH) MM MSW- MSW+ CPBJ MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY O/P ORG/ WIRE PNK ILL+ WIRE PNK WIRE RED WIRE RELAY ENERGIZED SET- SGND UNLOCK VCC VIO WIRE WHT WIRE WHT/BLK WIRE YEL 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 10 RMVR RM+R 6 11 3 16 9 10 1 BDR CPUB SIG 6 5 13 14 VSSR RVC HSSR AUTO RETRACTOR SWITCH OUTER MIRROR SWITCH BDR CPUB SIG BCUT CANP CANN GND BLK WIRE BLU WIRE BRN WIRE CANN CANP CANP CANN GND CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DOOR 1 FUSE DOOR 2 FUSE DRIVER SIDE J/B (LEFT END OF DASH) FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES PASSENGER SIDE J/B (RIGHT END OF DASH) HYBRID VEHICLE CONTROL ECU (LEFT FRONT OF ENGINE COMPT) LEFT FRONT MULTIPLEX NETWORK DOOR ECU (DRIVER'S DOOR) LEFT FRONT POWER SEAT CONTROL ECU, SWITCH (UNDER DRIVER'S SEAT) LEFT FRONT SEAT MEMORY SWITCH LEFT OUTER REAR VIEW MIRROR (AT MIRROR) LEFT/RIGHT LT GRN WIRE MAIN BODY ECU ALTB MIRROR POSITION SENSOR MPX-B FUSE MSW MSWE ORG/ WIRE OUTER MIRROR SWITCH ASSEMBLY P-D/C CUT FUSE PARK/ NEUTRAL POSITION SWITCH (RIGHT SIDE OF TRANSMISSION) PNK ILL+ WIRE PNK WIRE RED WIRE RED/WHT WIRE RELAY RELAY MPX B 1 FUSE RETRACTABLE MIRROR MOTOR RIGHT FRONT MULTIPLEX NETWORK DOOR ECU (FRONT PASSENGER'S DOOR) RIGHT OUTER REAR VIEW MIRROR (AT MIRROR) RMHR SET- SKID CONTROL ECU ASSEMBLY (LEFT REAR OF ENGINE COMPT) UP/DOWN VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TIM- +B 1 2 3 4 5 6 TIM+ TIM- 27 1 26 SGND 29 24 23 MSWE MSW+ MSW- 9 10 1 CANP CANN GND ANT ASEL BCUT BDR BLK WIRE BLU WIRE CANL CANH CANP CANN CANP CANP VCI TIS IG ECUB TIM+ GND CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) CERTIFICATION ECU ASSEMBLY (LEFT END OF DASH) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CONTROL CIRCUIT CPBJ D MPX-B 1 FUSE DATA DCTY DOOR 1 FUSE DOOR CONTROL RECEIVER (RIGHT REAR OF LUGGAGE COMPT) DOOR LOCK SWITCH DRIVER SIDE J/B (LEFT END OF DASH) ELECTRICAL KEY ANTENNA (RIGHT "C" PILLAR) FUSE GND VCI TIS GRN WIRE GRY WIRE HOT AT ALL TIMES LEFT FRONT DOOR COURTESY SWITCH (LEFT "B" PILLAR) LEFT FRONT SEAT MEMORY SWITCH LOCK LT GRN WIRE MAIN BODY ECU MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY MULTIPLEX TILT, TELESCOPIC ECU (ON STEERING COLUMN) NCA WIRE ORG/ WIRE OUTSIDE LUGGAGE ELECTRICAL KEY ANTENNA (RIGHT SIDE OF REAR BUMPER) PNK ILL+ WIRE PNK WIRE POWER TILT MOTOR (ON STEERING COLUMN) RCO RED WIRE RELAY RSSI SET- SYSTEM TELESCOPIC MOTOR TELESCOPIC SENSOR TEM TI, TE FUSE TILT MOTOR TILT SENSOR UNLOCK VCE TES VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DOWN GRN WIRE GRN/RED WIRE GRN/WHT WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HYBRID VEHICLE CONTROL ECU (LEFT FRONT OF ENGINE COMPT) IG CANP CANN PNK WIRE LEFT FRONT POWER SEAT CONTROL ECU, SWITCH (UNDER DRIVER'S SEAT) MSW P-D/C CUT FUSE PARK/ NEUTRAL POSITION SWITCH (RIGHT SIDE OF TRANSMISSION) PASSENGER SIDE J/B (RIGHT END OF DASH) RED WIRE SHRINK SKID CONTROL ECU ASSEMBLY (LEFT REAR OF ENGINE COMPT) STRETCH TILT, TELESCOPIC SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

2 1 TX+ TX- BBZ CBZ EE BLK WIRE BLU WIRE BUMPER FASCIA) CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) CLEARANCE WARNING BUZZER 1 (UNDER CENTER OF DASH) CLEARANCE WARNING BUZZER 2 (CENTER FRONT OF LUGGAGE COMPT) COMPUTER DATA LINES SYSTEM DISPLAY, NAVIGATION MODULE DISPLAY EF CV+ CGND FUSE GRN WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START LEFT FRONT SIDE ULTRASONIC SENSOR 1 (LEFT SIDE OF FRONT BUMPER FASCIA) LT GRN WIRE NCA WIRE ORG/ WIRE P MPX B FUSE P-ACC FUSE PARKING ASSIST ECU (RIGHT END END OF DASH) PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE RADIO 1 FUSE RED WIRE RIGHT FRONT SIDE ULTRASONIC SENSOR 1 (RIGHT SIDE OF FRONT TX- TX+ VIO WIRE WHT WIRE WHT/BLK WIRE 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

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