Toyota Avalon XX20 facelift (2002-2005) body ecu Wiring diagrams

2 3 4 5 6 7 8 9 10 11 12 SIG ACT- RCTY PBKL TKU AJAR BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BODY ECU CLTB DOOR 1 FUSE DOOR 2 FUSE DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM POWER WINDOWS SYSTEM DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) DRL ECU-ACC FUSE ECU-B FUSE ECU-IG 2 FUSE ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HEADLIGHTS SYSTEM HF HEAD AUTO DCTY LGC PRG RLD HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START HRLY TRLY HORN STOP HU TAIL PKB DBKL KSW TC GSW BZ RDA RLU PNK WIRE IF (AT LEFT KICK PANEL) IG (AT LEFT END OF DASH) ILL INTERIOR LIGHTS SYSTEM WARNING SYSTEM DOOR LOCKS SYSTEM STARTING/CHARGING SYSTEM J/B 3 (BEHIND LEFT KICK PANEL) JUNCTION CONNECTOR 4 (BEHIND RIGHT SIDE OF DASH) LT GRN WIRE LT GRN/RED WIRE ORG/ WIRE PNK/BLU WIRE POWER SEAT ECU (UNDER DRIVER'S SEAT) POWER WINDOWS SYSTEM WARNING SYSTEM RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RRD DBEW RRU PBEW THEFT DETERRENT ECU (BEHIND RIGHT SIDE OF DASH) TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE WHT/BLK WIRE WHT/RED WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

1 4 UNLK 12 8 10 11 13 2 3 4 CPUB GND 16 14 3 21 9 RCTY 5 23 24 DCTY 6 3 UNLK BLK WIRE BLK/ WHT WIRE BLK/RED WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BN (AT FRONT OF RIGHT INNER QUARTERPANEL) BODY ECU COMBINATION METER CPUB DOOR 1 FUSE DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) DSWH IOUT ECU-B FUSE ECU-IG 2 FUSE ENGINE HOOD COURTESY SWITCH (ON CENTER FRONT OF ENGINE COMPT) ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GLASS BREAKAGE SENSOR (BEHIND RIGHT SIDE OF DASH) GND KEYE KUL KL LSWD GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IF (AT LEFT KICK PANEL) IG (LEFT END OF DASH) II (AT RIGHT KICK PANEL) IJ (AT RIGHT END OF DASH) IND J/B 3 (BEHIND LEFT KICK PANEL) J/B 4 (BEHIND RIGHT KICK PANEL) J/C 1 (ON TOP OF LEFT KICK PANEL) J/C 10 (IN RIGHT FRONT SIDE OF LUGGAGE COMPT) J/C 18 (BEHIND RIGHT CENTER OF DASH) J/C 5 (BEHIND RIGHT SIDE OF DASH) J/C 6 (BEHIND RIGHT CENTER OF DASH) KEYE KUL KL LSWP LEFT FRONT DOOR COURTESY SWITCH LEFT FRONT DOOR KEY LOCK, UNLOCK SWITCH/ DOOR UNLOCK DETECTION SWITCH LEFT REAR DOOR COURTESY SWITCH LOCK LT GRN WIRE LUG KSW LUGGAGE COMPARTMENT DOOR KEY UNLOCK SWITCH ORG/ WIRE PCTY RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY SWITCH RIGHT FRONT DOOR KEY LOCK, UNLOCK SWITCH, DOOR UNLOCK DETECTION SWITCH RIGHT REAR DOOR COURTESY SWITCH SECURITY FUSE SECURITY INDICATOR LIGHT SH SH- SIG THEFT DETERRENT ECU (BEHIND RIGHT SIDE OF DASH) THEFT DETERRENT HORN (ON RIGHT REAR OF ENGINE COMPT) UNLOCK WARNING SWITCH VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE

A/C CONTROL ASSEMBLY AIR OUTLET CONTROL SERVO MOTOR AUTO A/C BK (FRONT OF LEFT INNER QUARTER PANEL) BLK/ WHT WIRE BODY ECU COLUMN SHIFT DOOR CONTROL RECEIVER FLOOR SHIFT FUEL PUMP HEATER CONTROL ASSEMBLY IF (LEFT KICK PANEL) J/B 4 (BEHIND RIGHT KICK PANEL) J/C 11 (LEFT FRONT OF LUGGAGE COMPT) J/C 14 (UNDER LEFT FRONT SEAT) J/C 6 (BEHIND RIGHT CENTER OF DASH) LEFT FRONT DOOR ECU LEFT FRONT LUMBAR SUPPORT CONTROL SWITCH LEFT FRONT POWER SEAT CONTROL SWITCH LEFT FRONT SEAT HEATER LEFT REAR DOOR LOCK MOTOR LEFT REAR INTERIOR LIGHT LEFT REAR POWER WINDOW CONTROL SWITCH LEFT REMOTE CONTROL MIRROR SWITCH MANUAL A/C POWER SEAT ECU PWR POINT RELAY REMOTE CONTROL MIRROR SWITCH RIGHT FRONT DOOR ECU RIGHT REMOTE CONTROL MIRROR SWITCH SHIFT LOCK ECU TO GROUND II (DIAGRAM 3 OF 4) TRANSPONDER KEY AMPLIFIER VOLTAGE INVERTER VSC OFF SWITCH W/ MEMORY W/ MEMORY W/O MEMORY W/ POWER SEAT W/O MEMORY WASHER LEVEL WARNING SWITCH WHT/BLK WIRE

A/C CONTROL ASSEMBLY BL (TOP OF LEFT "B" PILLAR) BM (CENTER REAR OF LUGGAGE COMPT) BN (FRONT OF RIGHT INNER QUARTER PANEL) BODY ECU BRN WIRE CENTER AIRBAG SENSOR ASSEMBLY CIGARETTE LIGHTER COMBINATION METER COMBINATION SWITCH DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) NOISE FILTER 1 FROM J/C 6 (DIAGRAM 2 OF 4) HIGH MOUNTED STOP LIGHT IG (LEFT END OF DASH) II (RIGHT KICK PANEL) INNER MIRROR J/B 3 (BEHIND LEFT KICK PANEL) J/C 10 (RIGHT FRONT SIDE OF LUGGAGE COMPT) J/C 12 (RIGHT REAR SIDE OF LUGGAGE COMPT) J/C 15, J/C 16 (ON TOP OF LEFT KICK PANEL) J/C 4 (BEHIND RIGHT SIDE OF DASH) KEY INTERLOCK SOLENOID LEFT BACK-UP LIGHT LEFT FRONT LEFT LICENSE PLATE LIGHT LEFT REAR COMBINATION LIGHT LEFT VANITY LIGHT RIGHT VANITY LIGHT LIGHT FAILURE SENSOR LUGGAGE COMPARTMENT DOOR KEY UNLOCK SWITCH MOON ROOF CONTROL ECU MOON ROOF CONTROL SWITCH NAVI- GATION ECU NOISE FILTER 2 PERSONAL LIGHT RED/BLU WIRE RELAY RIGHT BACK-UP LIGHT RIGHT BUCKLE SWITCH RIGHT FRONT LEFT REAR RIGHT FRONT POWER SEAT CONTROL SWITCH RIGHT FRONT SEAT HEATER RIGHT LICENSE PLATE LIGHT RIGHT REAR RIGHT REAR COMBINATION LIGHT RIGHT REAR DOOR LOCK MOTOR RIGHT REAR INTERIOR LIGHT RIGHT REAR POWER WINDOW CONTROL SWITCH SEAT BELT WARNING OCCUPANT DETECTION SENSOR STEREO COMPONENT AMPLIFIER TO J/C 5 (DIAGRAM 4 OF 4) TRANSLATE ECU UNLOCK WARNING SWITCH W/ DRL W/ MOON- ROOF W/ POWER SEAT W/ TRACTION CONTROL WHEEL SPEED SENSOR SHIELDS WHT/BLK WIRE YAW RATE SENSOR SHIELD

3 16 6 8 7 20 PCTY RCTY ALTL CLTS CLTE CLTB 4 3 1 CLTS CLTE CLTB 5 15 24 10 DCTY PKB 7 21 PRG RDA AUTOMATIC LIGHT CONTROL SENSOR (ON TOP LEFT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BODY ECU COMBINATION SWITCH DOOR COURTESY SWITCH (LEFT FRONT) DOOR LOCKS SYSTEM DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) DRL DRL FUSE EA (AT FRONT OF RIGHT FRONT FENDER) ED (AT FRONT OF LEFT FRONT FENDER) ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) ENGINE ROOM R/B 5 (ON LEFT INNER FENDER PANEL) FLASH DIMMER SWITCH FLASH LO HIGH FOGLIGHT SWITCH GENERATOR GENERATOR GRN WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE HEAD AUTO HEAD RELAY HF HU AUTO TAIL HEAD HOT AT ALL TIMES IG (AT LEFT END OF DASH) J/B 3 (BEHIND LEFT KICK PANEL) JUNCTION CONNECTOR 15, 16 (ON TOP OF LEFT KICK PANEL) JUNCTION CONNECTOR 4 (BEHIND RIGHT SIDE OF DASH) LEFT HEADLIGHT (LOW) LIGHT CONTROL SWITCH OFF TAIL LOWER LEFT HEAD FUSE LOWER RIGHT HEAD FUSE LT GRN WIRE MAIN FUSE OFF TAIL ORG/ WIRE PARKING BRAKE SWITCH (BEHIND DASH, ON PARKING BRAKE LEVER BRACKET) PNK 14 12 HEAD AUTO WIRE PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLIGHT (LOW) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

ABS ACTUATOR, ECU (W/O TRACTION CONTROL) ABS FUSE ABS FUSE NO 2 ABS FUSE NO 3 ABS MTR RELAY ABS NO 4 FUSE ABS SOL RELAY ABS, BA, TRAC, VSC ECU ALT FUSE AM 1 FUSE BATTERY BLK WIRE BLK/ORG WIRE BLU WIRE BODY ECU C/OPN RELAY CDS FUSE RDI FUSE CENTER AIR BAG SENSOR ASSEMBLY CENTER AIRBAG SENSOR CHARGE WARNING LIGHT CIGARETTE LIGHTER DATA LINK CONNECTOR 3 DOOR NO 1 FUSE DRIVER DOOR ECU ECU- PWR OUT FUSE NO 1 FUSE ENGINE CONTROL MODULE ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) ENGINE ROOM R/B NO 3 (ON LEFT FRONT OF ENGINE COMPT) ENGINE ROOM R/B NO 5 (ON LEFT FRONT INNER FENDER PANEL) FAN NO 3 RELAY FAN NO 1 RELAY FL P/W FUSE FOG LIGHTS FOG RELAY FUSIBLE LINK BLOCK (ON LEFT FRONT INNER FENDER PANEL) GENERATOR GRN WIRE GRN/RED WIRE GRY WIRE HEATER RELAY HTR FUSE IG (LEFT END OF DASH) IG 1 RELAY IGNITION SWITCH LT GRN WIRE MAIN FUSIBLE LINK (12 GA- MOON ROOF CONTROL ECU NCA WIRE OBD II FUSE OFF ON ON ORG/ WIRE PNK WIRE RED WIRE SEAT HEATER CONTROL SWITCH SEAT OPNER PWR FOG HTR FUSE OUTLET FUSE FUSE NO 2 FUSE SRS- CIG FUSE FUSE STOP FUSE STOP LIGHT SWITCH SUN PWR ROOF SEAT FUSE FUSE THEFT DETERRENT ECU TO ECU-IG NO 2 FUSE (DIAGRAM 2 OF 3) TO ENGINE ROOM J/B TO POWER OUTLET (DIAGRAM 3 OF 3) TO POWER POINT RELAY (DIAGRAM 3 OF 3) TO TAIL RELAY (DIAGRAM 2 OF 3) WHT WIRE WHT/RED WIRE YEL WIRE

A/F FUSE A/F RELAY ABS ACTUATOR AND ECU AIR FUEL RATIO SENSOR (BANK 1 SENSOR 1) AIR FUEL RATIO SENSOR (BANK 2 SENSOR 1) AM 2 FUSE BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BODY ECU C/OPN RELAY DCC FUSE DEF FR P/W RR P/W FUSE FUSE DEFOGGER SYSTEM DOME ECU-IG FUSE NO 2 FUSE DOOR DRL NO. 2 RELAY ECU-B FUSE ED (FRONT OF LEFT FRONT FENDER) EFI NO 1 FUSE EFI NO 2 FUSE EFI RELAY ENGINE CONTROL MODULE ENGINE CONTROL MODULE, FRONT PARKING LIGHTS ENGINE CONTROL MODULE, TRANSPONDER KEY AMPLIFIER ENGINE ROOM J/B EXTERIOR LIGHTS SYSTEM LEFT REAR WINDOW SWITCH FROM DRIVER SIDE J/B FROM DRIVER SIDE J/B (DIAGRAM 1 OF 3) FROM FUSIBLE LINK BLOCK (ALT FUSE) (DIAGRAM 1 OF 3) FROM IG 1 RELAY (DIAGRAM 1 OF 3) FROM IGNITION SWITCH (DIAGRAM 1 OF 3) FRONT PARKING LIGHTS FRONT PASSENGER DOOR ECU GAUGE NO 1 FUSE GAUGE TURN ECU-IG WIP HTR NO 2 FUSE NO 1 FUSE FUSE FUSE FUSE DEF RELAY GRN WIRE HAZARD SWITCH BODY ECU BODY ECU, HORN SWITCH HEAD RELAY HORN FUSE HORN RELAY HORNS IG 2 FUSE IG 2 RELAY IGNITION COILS, NOISE FILTER INJECTORS INNER MIRROR INTERIOR LIGHTS SYSTEMS J/B NO 4 (BEHIND RIGHT KICK PANEL) LT GRN WIRE MAIN FUSE MAIN SWITCH (PIN 3) (DIAGRAM 3 OF 3) MIR HTR FUSE FUSE MIRROR HEATERS PNK WIRE PWR DEF RELAY RELAY PWR SEAT ECU MOON ROOF CONTROL ECU, RADIO FUSE RADIO/ PLAYER, STEREO COMPONENT AMPLIFIER, MULTI- DISPLAY RED WIRE RED/BLK WIRE RIGHT REAR WINDOW SWITCH RL P/W FUSE PANEL FUSE SRS HAZ ALT-S WARN NO 2 FUSE FUSE FUSE FUSE SRS WARNING LIGHT, MULTI- DISPLAY GENERATOR ST RELAY STARTER TAIL FUSE TAIL RELAY THEFT DEFERRENT ECU W/DRL WHT WIRE YEL WIRE

1 2 3 5 14 15 18 21 ACTD ACT+ PCTY LSR 1 4 6 5 UNLK 5 7 11 17 20 21 24 25 DCTY PRG 6 3 2 1 UNLK ACT- TKU BK (AT FRONT OF LEFT INNER QUARTERPANEL) BLK WIRE BLU BLU WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY ECU CPUB GND KEYE KUL KL LSWD CPUB GND KEYE KUL KL LSWP DOME FUSE DOOR 1 FUSE DOOR 2 FUSE DOOR CONTROL RECEIVER (ON RIGHT FRONT SIDE OF TRUNK) DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU-B FUSE ECU-IG 2 FUSE ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GRN WIRE GRN/BLK WIRE GRN/RED WIRE HOT AT ALL TIMES HOT IN ON OR START IF (AT LEFT KICK PANEL) IG (AT LEFT END OF DASH) II (AT RIGHT KICK PANEL) J/B 3 (BEHIND LEFT KICK PANEL) J/B 4 (BEHIND RIGHT KICK PANEL) J/C 11 J/C 18 (BEHIND RIGHT CENTER OF DASH) J/C 4 (BEHIND RIGHT SIDE OF DASH) KSW BZ RDA LEFT FRONT DOOR COURTESY SWITCH LEFT REAR DOOR LOCK MOTOR LOCK LT GRN WIRE LUGGAGE COMPARTMENT DOOR OPENER MAIN SWITCH LUGGAGE COMPARTMENT DOOR OPENER MOTOR (ON MIDDLE REAR OF TRUNK LID) LUGGAGE COMPARTMENT DOOR OPENER SWITCH ORG/ WIRE PNK WIRE PNK/BLU WIRE RDA PRG RED WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY SWITCH RIGHT REAR DOOR LOCK MOTOR SIG 1 7 UNLOCK WARNING SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE WIRELESS DOOR LOCK BUZZER (ON RIGHT FRONT OF ENGINE COMPT) YEL WIRE

1 2 3 5 14 15 18 21 ACTD ACT+ PCTY LSR 1 4 6 5 UNLK 5 11 17 24 25 DCTY 6 3 2 1 UNLK ACT- TKU BK (AT FRONT OF LEFT INNER QUARTERPANEL) BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY ECU CPUB GND KEYE KUL KL LSWD CPUB GND KEYE KUL KL LSWP DOOR 1 FUSE DOOR 2 FUSE DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU-B FUSE ECU-IG 2 FUSE ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GRN WIRE GRN/BLK WIRE HOT AT ALL TIMES HOT IN ON OR START IF (AT LEFT KICK PANEL) IG (AT LEFT END OF DASH) II (AT RIGHT KICK PANEL) J/B 3 (BEHIND LEFT KICK PANEL) J/B 4 (BEHIND RIGHT KICK PANEL) J/C 11 J/C 4 (BEHIND RIGHT SIDE OF DASH) J/C 9 LEFT FRONT DOOR COURTESY SWITCH LEFT REAR DOOR LOCK MOTOR LOCK LT GRN WIRE LUGGAGE COMPARTMENT DOOR OPENER MAIN SWITCH LUGGAGE COMPARTMENT DOOR OPENER MOTOR (ON MIDDLE REAR OF TRUNK LID) LUGGAGE COMPARTMENT DOOR OPENER SWITCH ORG/ WIRE RED WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY SWITCH RIGHT REAR DOOR LOCK MOTOR SIG 1 7 UNLOCK WARNING SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

BLU WIRE BLU/BLK WIRE BLU/RED WIRE BODY ECU DOOR 1 FUSE DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU-IG 2 FUSE ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) DOOR 2 FUSE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IF (AT LEFT KICK PANEL) J/B 4 (BEHIND RIGHT KICK PANEL) JUNCTION CONNECTOR 10 (IN RIGHT FRONT SIDE OF LUGGAGE BN COMPT) JUNCTION CONNECTOR 18 (BEHIND RIGHT CENTER OF DASH) JUNCTION CONNECTOR 9 (ON TOP OF RIGHT KICK PANEL) LUG LUGGAGE COMPARTMENT DOOR KEY UNLOCK SWITCH LUGGAGE COMPARTMENT DOOR OPENER MAIN SWITCH LUGGAGE COMPARTMENT DOOR OPENER SWITCH LUGGAGE COMPARTMENT DOOR UNLOCK MOTOR PNK/BLU WIRE SIG THEFT DETERRENT ECU (BEHIND RIGHT SIDE OF DASH) TKU VIO WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (ON RIGHT FRONT OF ENGINE COMPT)