Toyota Avalon XX20 facelift (2002-2005) engine controls system Wiring diagrams

1 2 8 9 15 16 BATT IGSW MREL ODLP STP +B 2 SL 5 20 22 24 25 27 TC NSW SPD 7 19 20 21 23 24 30 31 PNK WIRE BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLU/ORG WIRE BLU/RED WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL ECU (BEHIND LEFT CENTER OF DASH) DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) EB (LEFT FRONT OF ENGINE, ON SURGE TANK) EC (LEFT FRONT OF ENGINE, ON SURGE TANK) ED (FRONT OF LEFT FRONT FENDER) EFI 1 FUSE EFI 2 FUSE EFI RELAY ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (ON LEFT SIDE OF TRANSAXLE) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES IDLO TACH IGNITION SWITCH INSTRUMENT CLUSTER SYSTEM J/B 3 (BEHIND LEFT KICK PANEL) J/C 17 (BEHIND CENTER OF DASH) J/C 7 (BEHIND RIGHT SIDE OF DASH) J/C 8 (BEHIND RIGHT SIDE OF DASH) LOCK LT GRN WIRE LT GRN/RED WIRE ODMS PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE SLN- SLN+ THROTTLE POSITION SENSOR (ON THROTTLE BODY) VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

A/C DIODE (BEHIND LEFT KICK PANEL, TAPED TO HARNESS) A/C SINGLE PRESSURE SWITCH (ON LOWER RIGHT FRONT OF ENGINE COMPT) ACMG BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE CDS FUSE DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU- IG 1 FUSE ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) ENGINE ROOM R/B 3 (ON LEFT FRONT OF ENGINE COMPT) FAN 1 RELAY FAN 2 RELAY FAN 3 RELAY GRN WIRE HOT AT ALL TIMES HOT IN ON OR START J/B 3 (BEHIND LEFT KICK PANEL) RADIATOR FAN MOTOR (ON LEFT FRONT OF ENGINE COMPT) RDI FUSE WATER TEMPERATURE SWITCH 1 (ON LEFT BOTTOM OF RADIATOR) WATER TEMPERATURE SWITCH 2 (ON TOP REAR OF INTAKE MANIFOLD) WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE

1 2 3 4 5 DRIVE SIG GND VY VMID VX ABS IND. AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM EB (AT LEFT FRONT OF ENGINE, ON SURGE TANK) ANTI-LOCK BRAKES SYSTEM AUTOMATIC A/C BACK LIGHT CIRCUIT BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE IND BRL BRN WIRE CHARGE IND CRUISE IND DISPLAY DOME FUSE DOOR IND DRIVER SEAT BELT IND DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU-ACC FUSE ECU-IG 2 FUSE ENGINE CONTROLS SYSTEM FIELD MAGNETIC SENSOR (W/ AUTOMATIC A/C) (IN FRONT CENTER OF ROOF) FUEL PUMP, SENDER (IN FUEL TANK) GAUGE 1 FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START HOT W/ TAIL RELAY ENERGIZED J/B 3 (BEHIND LEFT KICK PANEL) J/B 4 (BEHIND RIGHT KICK PANEL) J/C 2 (BEHIND CENTER OF DASH) JUNCTION CONNECTOR 9 (ON TOP OF RIGHT KICK PANEL) IJ (AT RIGHT END OF DASH) LIGHT LT GRN/BLK WIRE MALFUNCTION IND LAMP MANUAL A/C MULTI-DISPLAY NAVIGATION DISPLAY NCA WIRE OIL IND OIL PRESSURE SWITCH (ON LOWER LEFT FRONT OF ENGINE) W/O TRACTION CONTROL ORG/ WIRE PANEL FUSE PASSENGER SEAT BELT IND PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER SUPPLY RADIO FUSE REAR LIGHTS IND RED WIRE RED/BLK WIRE RED/BLU WIRE RELAY SLIP IND SRS IND TRAC OFF IND VIO WIRE VIO/WHT WIRE VSC IND W/ AUTOMATIC A/C W/ TRACTION CONTROL W/O TRACTION CONTROL WASHER IND WATER TEMPERATURE SENDER (ON TOP FRONT OF ENGINE) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE WIPER/WASHER SYSTEM WARNING SYSTEM YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

A/C AUTOMATIC A/C CONTROL ASSEMBLY (AUTOMATIC A/C) SPD ANTI-THEFT SYSTEM BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRAKE FLUID LEVEL WARNING SWITCH (ON BRAKE FLUID RESEROIR) BRN WIRE COMBINATION METER CRUISE CONTROL ECU (BEHIND LEFT CENTER OF DASH) SPD CRUISE CONTROL SYSTEM ANTI-LOCK BRAKES SYSTEM DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU-B FUSE ED (AT FRONT OF LEFT FRONT FENDER) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) TACH ENGINE CONTROLS SYSTEM ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) EXTERIOR LIGHTS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM FUEL GAUGE FUEL IND GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HIGH BEAM IND HOT AT ALL TIMES IG (AT LEFT END OF DASH) IG 2 FUSE IG 2 RELAY IH TRANSMISSIONS SYSTEM (AT RIGHT CENTER OF DASH) ILLUMINATION J/B 3 (BEHIND LEFT KICK PANEL) JUNCTION CONNECTOR JUNCTION CONNECTOR 15, 16 (ON TOP OF LEFT KICK PANEL) LEFT TURN IND LT GRN/BLK WIRE MANUAL A/C MULTI-DISPLAY NAVIGATION ECU (ON LEFT SIDE OF LUGGAGE COMPT) SPD NAVIGATION SYSTEM NCA WIRE O/D OFF IND ODO TRIP ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE REVERSE BUZZER RIGHT TURN IND SECURITY SOUNDS SYSTEM SPEEDOMETER STARTING/CHARGING SYSTEM TACHOMETER TEMPERATURE GAUGE VIO/WHT WIRE W/D WARNING SYSTEM WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

1 2 3 4 5 DRIVE SIG GND VY VMID VX ABS IND. AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM EB (AT LEFT FRONT OF ENGINE, ON SURGE TANK) ANTI-LOCK BRAKES SYSTEM AUTOMATIC A/C BACK LIGHT CIRCUIT BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE IND BRL BRN WIRE CHARGE IND CRUISE IND DISPLAY DOME FUSE DOOR IND DRIVER SEAT BELT IND DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU-ACC FUSE ECU-IG 2 FUSE ENGINE CONTROLS SYSTEM FIELD MAGNETIC SENSOR (W/ AUTOMATIC A/C) (IN FRONT CENTER OF ROOF) FUEL PUMP, SENDER (IN FUEL TANK) GAUGE 1 FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START HOT W/ TAIL RELAY ENERGIZED J/B 3 (BEHIND LEFT KICK PANEL) J/B 4 (BEHIND RIGHT KICK PANEL) J/C 2 (BEHIND CENTER OF DASH) JUNCTION CONNECTOR 9 (ON TOP OF RIGHT KICK PANEL) IJ (AT RIGHT END OF DASH) LIGHT LT GRN/BLK WIRE MALFUNCTION IND LAMP MANUAL A/C MODE MULTI-DISPLAY NCA WIRE ODO/TRIP OIL IND OIL PRESSURE SWITCH (ON LOWER LEFT FRONT OF ENGINE) W/O TRACTION CONTROL ORG/ WIRE PANEL FUSE PASSENGER SEAT BELT IND PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER SUPPLY RADIO FUSE REAR LIGHTS IND RED WIRE RED/BLK WIRE RED/BLU WIRE RELAY RESET/ADJ SLIP IND SRS IND TRAC OFF IND VIO WIRE VIO/WHT WIRE VSC IND W/ AUTOMATIC A/C W/ TRACTION CONTROL W/O TRACTION CONTROL WASHER IND WATER TEMPERATURE SENDER (ON TOP FRONT OF ENGINE) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE WIPER/WASHER SYSTEM WARNING SYSTEM YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

A/C CONTROL ASSEMBLY (AUTOMATIC A/C) SPD ANTI-THEFT SYSTEM AUTOMATIC A/C BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRAKE FLUID LEVEL WARNING SWITCH (ON BRAKE FLUID RESEROIR) BRN WIRE COMBINATION METER CRUISE CONTROL ECU (BEHIND LEFT CENTER OF DASH) SPD CRUISE CONTROL SYSTEM ANTI-LOCK BRAKES SYSTEM WARNING SYSTEM DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND LEFT SIDE OF DASH) ECU-B FUSE ED (AT FRONT OF LEFT FRONT FENDER) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) TACH ENGINE CONTROLS SYSTEM ENGINE ROOM J/B (ON LEFT FRONT INNER FENDER PANEL) EXTERIOR LIGHTS SYSTEM STARTING/CHARGING SYSTEM FUEL GAUGE FUEL IND GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HIGH BEAM IND HOT AT ALL TIMES IG (AT LEFT END OF DASH) IG 2 FUSE IG 2 RELAY ILLUMINATION J/B 3 (BEHIND LEFT KICK PANEL) JUNCTION CONNECTOR JUNCTION CONNECTOR 1 (ON TOP OF LEFT KICK PANEL) JUNCTION CONNECTOR 15, 16 (ON TOP OF LEFT KICK PANEL) LCD LEFT TURN IND LT GRN/BLK WIRE MANUAL A/C MULTI-DISPLAY NCA WIRE O/D OFF IND ODO TRIP PNK/BLK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT TURN IND SECURITY SPEEDOMETER STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TACHOMETER TEMPERATURE GAUGE TRANSMISSIONS SYSTEM VIO/WHT WIRE W/D WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE