Toyota Sienna II (2003-2005) j/c 20 (behind upper left side of dash) Wiring diagrams

+BM ABS 1 FUSE ABS IND. AUTOMATIC A/C BLK WIRE BLK/RED WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE FLUID LEVEL WARNING SWITCH (ON BRAKE FLUID RESERVOIR) BRAKE IND BRL BRN WIRE COLUMN) COMBINATION METER COMPT) PNK/ WIRE DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING COLUMN) EA (AT RIGHT SIDE OF ENGINE COMPT) COLUMN) ECU-IG FUSE ED (AT LEFT SIDE OF ENGINE COMPT) END OF DASH) ENGINE ROOM J/B (BEHIND DASH, LEFT OF STEERING COLUMN) ECU-B FUSE FL- FR+ FR- GAUGE 1 FUSE GAUGE 2 FUSE GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR START IE (AT LEFT KICK PANEL) IF (BEHIND LOWER CENTER OF DASH) J/C 1 (AT LEFT SIDE OF ENGINE J/C 18 (BEHIND UPPER LEFT SIDE J/C 18 (BEHIND UPPER LEFT SIDE OF DASH) J/C 19 (BEHIND UPPER LEFT SIDE OF DASH) J/C 2 (AT LEFT SIDE OF ENGINE COMPT) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 5, 6 (BEHIND LEFT END OF DASH) J/C 7, 8 (BEHIND LEFT J/C 7, 8 (BEHIND LEFT END OF DASH) LEFT FRONT ABS SPEED SENSOR (MOUNTED ON HUB ASSEMBLY OF LEFT FRONT WHEEL) LEFT REAR ABS SPEED SENSOR LT GRN WIRE MANUAL A/C OF DASH) ORG/ WIRE PARKING BRAKE SWITCH (ON PARKING BRAKE LEVER) PNK WIRE PNK/BLK WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT FRONT ABS SPEED SENSOR (MOUNTED ON HUB ASSEMBLY OF RIGHT FRONT WHEEL) RIGHT REAR ABS SPEED SENSOR (MOUNTED ON HUB ASSEMBLY OF RIGHT REAR WHEEL) RR- RR+ RL- RL+ TC SIL SKID CONTROL ECU W/ ACTUATOR (AT LEFT REAR OF ENGINE COMPT) SPEEDOMETER STOP FUSE STOPLIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) TIRE PRESSURE IND TIRE PRESSURE WARNING STANDARDIZATION SWITCH (ON LEFT SIDE OF DASH) TS D/G PKB FL+ WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WTIR INIT YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

10 9 CANH CANL 11 8 D/G TC WFSE TS CANL CANH 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BAT WFSE CANL TC TS 19 20 18 WFSE TC SIL 2 3 CANL CANH A/C CONTROL ASSEMBLY AIR BAG SENSOR ASSEMBLY BLK WIRE BLK/ORG WIRE BLU WIRE BODY ECU BRN WIRE COMBINATION METER DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DOOR ECU DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING COLUMN) DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING COLUMN) OBD FUSE ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) GRY/RED WIRE HOT AT ALL TIMES J/C 13, 14 (BEHIND LEFT END OF DASH) J/C 17 (BEHIND UPPER LEFT SIDE OF DASH) J/C 18 (BEHIND UPPER LEFT SIDE OF DASH) J/C 19 (BEHIND UPPER LEFT SIDE OF DASH) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 29 (BEHIND RIGHT SIDE OF DASH) J/C 31, 32 (BEHIND RIGHT SIDE OF DASH) J/C 35, 36 (BEHIND RIGHT SIDE OF DASH) J/C 37 (FORWARD OF LEFT REAR WHEELWELL) J/C 5, 6 (BEHIND LEFT END OF DASH) J/C 7, 8 (BEHIND LEFT END OF DASH) LEFT POWER SLIDE DOOR ECU (IN LEFT SLIDING DOOR) MPX PNK/BLK WIRE RED WIRE RED/BLU WIRE RIGHT POWER SLIDE DOOR ECU (IN RIGHT SLIDING DOOR) SIL SIL CANH SG CG SKID CONTROL ECU W/ ACTUATOR (AT LEFT REAR OF ENGINE COMPT) STEERING SENSOR (INSIDE STEERING COLUMN) TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YAW RATE SENSOR (UNDER RIGHT FRONT SEAT) YEL/GRN WIRE

BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLU/WHT WIRE BRN WIRE COMBINATION METER COMBINATION SWITCH COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE IND DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING COLUMN) EB (AT FRONT OF ENGINE) GAUGE 1 FUSE GAUGE 2 FUSE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IF (BEHIND LOWER CENTER OF DASH) IGN FUSE J/C 18 (BEHIND UPPER LEFT SIDE OF DASH) J/C 19 (BEHIND UPPER J/C 19 (BEHIND UPPER LEFT SIDE OF DASH) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 29 (BEHIND RIGHT SIDE OF DASH) J/C 5, 6 (BEHIND LEFT END OF DASH) LT GRN/RED WIRE ON OFF PARK/NEUTRAL POSITION SWITCH (ON TRANSAXLE) RED WIRE RED/BLU WIRE STOP FUSE STOP LIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE

A/C CONTROL ASSEMBLY AUTOMATIC A/C MANUAL A/C BLK WIRE BLK/WHT WIRE BM (AT LEFT REAR QUARTERPANEL) DASH) DEF FUSE DEFOG RELAY DRIVER SIDE J/B (BEHIND DASH, LEFT EA (AT RIGHT SIDE OF ENGINE COMPT) ED (AT LEFT SIDE OF ENGINE COMPT) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) FR DEF FUSE FRONT WINDOW DEICER FRONT WINDOW DEICER RELAY (BEHIND LEFT SIDE OF DASH) FUSIBLE LINK BLOCK (ON LEFT SIDE OF ENGINE COMPT, INSIDE ENGINE ROOM J/B) GRN WIRE HOT AT ALL TIMES HOT IN ON OR START HTR FUSE IE (AT LEFT KICK PANEL) IG (AT RIGHT KICK PANEL) INT LT J/C 1 (AT LEFT SIDE OF ENGINE COMPT) J/C 18 (BEHIND UPPER LEFT SIDE OF J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 3, 4 (BEHIND LEFT END OF DASH) J/C 7, 8 (BEHIND LEFT END OF DASH) MIR HTR FUSE OF STEERING COLUMN) RDSW REAR WINDOW DEFOGGER REAR WINDOW DEFOGGER SWITCH RED/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/GRN WIRE

+BM 17 18 29 24 10 19 12 6 SPD 28 18 17 3 2 29 19 1 4 7 PNK CCHG LGND WIRE 6 7 8 9 PNK WIRE 8 1 2 MREL +B ACCEL POSITION SENSOR (UNDER LEFT SIDE OF DASH) BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CANL CANH COMPUTER DATA LINES SYSTEM DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING COLUMN) EB (AT FRONT OF ENGINE) COUNTER GEAR SPEED SENSOR (ON TOP OF TRANSAXLE) EC (AT REAR OF ENGINE) ECU W/ ACTUATOR 10 9 8 23 22 12 25 11 NEO ENG+ TRC+ ENG- TRC- PNK WIRE ECU-B FUSE ED (AT LEFT SIDE OF ENGINE COMPT) EFI 1 FUSE EFI RELAY END OF DASH) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) ETCS FUSE GAUGE 1 FUSE GAUGE 2 FUSE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR START J/B 3, 4 (BEHIND LEFT J/C 18 (BEHIND UPPER LEFT SIDE OF DASH) J/C 19 (BEHIND UPPER LEFT SIDE OF DASH) J/C 2 (AT LEFT SIDE OF ENGINE COMPT) J/C 20 (BEHIND UPPER LEFT CENTER OF DASH) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 21 (BEHIND UPPER LEFT CENTER OF DASH) J/C 29 (BEHIND RIGHT SIDE OF DASH) J/C 3, 4 (BEHIND LEFT END OF DASH) J/C 5, 6 (BEHIND LEFT END OF DASH) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE M+ M- ELC LCS NCA WIRE NT+ NT- NC+ NC- PARK/ NEUTRAL POSITION SWITCH (ON TRANSAXLE) PNK WIRE PNK/BLK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE THROTTLE CONTROL MOTOR, THROTTLE POSITION SENSOR TURBINE SPEED SENSOR (AT REAR OF TRANSAXLE) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

BLK/ORG WIRE BODY TRLY ECU (BEHIND LEFT SIDE TAIL HAZ OF DASH) BRN WIRE COMBI- NATION SWITCH COMBINATION METER COMBINATION SWITCH DASH, LEFT OF STEERING COLUMN) DRIVER SIDE J/B (BEHIND ED (AT LEFT SIDE OF ENGINE COMPARTMENT) EHW END OF DASH) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) HAZ FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/YEL WIRE HAZARD SWITCH HEAD HOT AT ALL TIMES IE (AT LEFT KICK PANEL) IF (BEHIND LOWER CENTER OF DASH) IG (AT RIGHT KICK PANEL) J/C 18 (BEHIND UPPER LEFT SIDE OF DASH) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 27 (BEHIND RIGHT SIDE OF DASH) J/C 3, 4 (BEHIND LEFT LEFT PARKING/ TURN SIGNAL LIGHT PARK TURN LEFT SIDE MARKER LIGHT LEFT TURN IND PARK RED WIRE RIGHT PARKING/ TURN SIGNAL LIGHT TURN RIGHT SIDE MARKER LIGHT RIGHT TURN IND TAIL FUSE TAIL OFF TAIL RELAY TURN SIGNAL FLASHER WHT WIRE WHT/BLK WIRE

1 10 2 SH HCTY BZR 12 11 14 16 8 7 4 RDA PRG DCTY RCTY 24 2 21 1 IND HAZ KSW TR+ 3 25 23 4 27 5 DBSU BCTY PCTY BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE BRN/RED WIRE BUZZER COMBINATION METER DOOR 2 FUSE DOOR IND DOOR LOCK CONTROL RECEIVER (BEHIND UPPER CENTER OF DASH) DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING COLUMN) ECU-ACC FUSE ECU-B FUSE ECU-IG FUSE ENGINE HOOD COURTESY SWITCH (ON FRONT OF ENGINE COMPT) ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) GAUGE 2 FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GRY WIRE HORN HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START IE (AT LEFT KICK PANEL) IF (BEHIND LOWER CENTER OF DASH) IG (AT RIGHT KICK PANEL) J/C 1 (AT LEFT SIDE OF ENGINE COMPT) J/C 11, 12 (BEHIND LEFT END OF DASH) J/C 18 (BEHIND UPPER LEFT SIDE OF DASH) J/C 19 (BEHIND UPPER LEFT SIDE OF DASH) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 3, 4 (BEHIND LEFT END OF DASH) KEYLESS BUZZER (BEHIND LEFT FRONT CORNER LAMP) LCTY LEFT FRONT DOOR COURTESY SWITCH (AT LEFT "B" PILLAR) LEFT FRONT DOOR LOCK CONTROL SWITCH LEFT SLIDE DOOR COURTESY SWITCH LOCK LSWD ACTD LSWL LSWP LSWR LT GRN WIRE ORG/ WIRE PNK/BLU WIRE RDA PRG RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR LOCK CONTROL SWITCH THEFT DETERRENT HORN (ON RIGHT REAR OF ENGINE COMPT) TURN EHW SIGNAL FLASHER (BEHIND LEFT SIDE OF DASH) UNLOCK UNLOCK WARNING SWITCH (ON UPPER STEERING COLUMN) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE

1 2 W/ POWER SLIDE DOOR W/O POWER SLIDE DOOR 10 SPEAKER AIR BAG SENSOR ASSEMBLY AIR FUEL RATIO SENSOR (BANK 1 SENSOR 1) SHIELD BI (AT RIGHT "B" PILLAR) BJ (IN RIGHT SLIDING DOOR) BK (IN RIGHT SLIDING DOOR) BL (AT RIGHT "C" PILLAR) BLK WIRE BLOWER MOTOR (REAR) BLOWER MOTOR CONTROLLER (REAR) BRN WIRE COMBINATION METER COMBINATION SWITCH CRANKSHAFT POSITION SENSOR SHIELD DATA LINK CONNECTOR 3 DISTANCE CONTROL ECU DRIVER SIDE J/B (BEHIND DASH, LEFT OF STEERING COLUMN) EB (AT FRONT OF ENGINE) ENGINE CONTROL MODULE FRONT SEAT) HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) SHIELD HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) SHIELD IF (BEHIND LOWER CENTER OF DASH) IGNITION COIL, IGNITER 1 IGNITION COIL, IGNITER 2 IGNITION COIL, IGNITER 3 IGNITION COIL, IGNITER 4 IGNITION COIL, IGNITER 5 IGNITION COIL, IGNITER 6 J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 23 (BEHIND UPPER CENTER OF DASH) J/C 28 (BEHIND RIGHT SIDE OF DASH) J/C 29 (BEHIND RIGHT SIDE OF DASH) J/C 42 (W/ VSC) (FORWARD OF RIGHT WHEELWELL) KNOCK AIR FUEL SENSOR 1 RATIO SHIELD SENSOR (BANK 2 SENSOR 1) SHIELD KNOCK SENSOR 2 SHIELD LASER RADAR SENSOR LEFT CAMSHAFT TIMING OIL CONTROL VALVE SHIELD LT GRN WIRE NAVIGATION ECU NCA WIRE OCCUPANT DETECTION SENSOR RIGHT BUCKLE SWITCH RADIO, PLAYER REAR SEAT AUDIO CONTROLLER RIGHT CAMSHAFT TIMING OIL CONTROL VALVE SHIELD RIGHT POWER SLIDE DOOR CONTROL MOTOR, CLUTCH RIGHT POWER SLIDE DOOR ECU RIGHT POWER SLIDE DOOR LOCK ASSEMBLY RIGHT POWER YAW RATE SENSOR SLIDE DOOR CONTROL SWITCH RIGHT REAR COMBINATION LIGHT RIGHT SEAT HEATER ECU RIGHT SLIDE DOOR ATTACHMENT CONTROL STEREO COMPONENT AMPLIFIER W/ NAVIGATION SYSTEM W/ REAR SEAT ENTERTAINMENT W/O NAVIGATION SYSTEM W/O REAR SEAT AUDIO W/O VSC WHT WIRE WHT/BLK WIRE YEL WIRE

3 4 W/ POWER SLIDE DOOR W/O POWER SLIDE DOOR ASSEMBLY BACK DOOR LOCK ASSEMBLY BACK DOOR OPENER SWITCH BH (AT LEFT "B" PILLAR) BLK WIRE BLOWER MOTOR CONTROLLER (FRONT) BLOWER RESISTOR BLOWER SWITCH BM (AT LEFT REAR QUARTERPANEL) CIGARETTE LIGHTER COMBINATION METER CONTROL MIRROR DATA LINK CONNECTOR 3 DOME CUT RELAY DOOR LOCK CONTROL RECEIVER DRIVER'S SEAT HEATER SWITCH FRONT DOOR) FRONT PASSENGER'S SEAT HEATER SWITCH FUEL PUMP, FUEL SENDER POWER OUTLET (REAR) HAZARD SWITCH REAR WINDOW DEFOGGER SWITCH HEADLIGHT BEAM LEVEL CONTROL SWITCH IG (AT RIGHT KICK PANEL) INTERIOR LIGHT) INVERTER RELAY J/C 16 (BEHIND LEFT END OF DASH) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) J/C 38 (BEHIND LEFT J/C 41 (IN BACK DOOR) J/C 44 (W/ POWER SEAT) (UNDER LEFT FRONT SEAT) LEFT BUCKLE SWITCH LEFT BUCKLE SWITCH, SEAT POSITION SENSOR LEFT LICENSE PLATE LIGHT LEFT POWER SLIDE DOOR CONTROL SWITCH LEFT POWER SLIDE DOOR ECU LEFT REAR COMBINATION LIGHT LEFT SEAT HEATER ECU LEFT SLIDE DOOR ATTACHMENT CONTROL MOTOR, DOOR UNLOCK DETECTION SWITCH POWER BACK DOOR ECU FUEL LID COURTESY POWER OUTLET (FRONT) POWER SEAT CONTROL SWITCH REAR QUARTERPANEL) REAR WINDOW DEFOGGER REMOTE CONTROL MIRROR SWITCH RIGHT FRONT DOOR LOCK RIGHT FRONT DOOR LOCK CONTROL SWITCH RIGHT LICENSE PLATE LIGHT HIGH MOUNTED STOP LIGHT RIGHT MIRROR HEATER, REMOTE RIGHT REAR COMBINATION LIGHT SECURITY INDICATOR LIGHT, MAIN SWITCH STEERING SENSOR SWITCH VOLTAGE INVERTER W/ AUTOMATIC A/C W/ MANUAL A/C W/ POWER SLIDE DOOR W/O POWER SLIDE DOOR WHT WIRE WHT/BLK WIRE

26 27 IMO IMI AGND BLK WIRE BLK/ORG WIRE BLU WIRE BLU/WHT WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN/RED WIRE BRN/WHT WIRE CODE CTY DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DRIVER SIDE J/B EFII EFIO ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) HOT AT ALL TIMES ENGINE ROOM ECU-B FUSE J/B (ON LEFT SIDE OF ENGINE COMPT) HOT IN ON OR START IE (AT LEFT KICK PANEL) IG (AT RIGHT KICK PANEL) IGN FUSE IND J/C 11, 12 (BEHIND LEFT END OF DASH) J/C 18 (BEHIND UPPER LEFT SIDE OF DASH) J/C 19 (BEHIND UPPER LEFT SIDE OF DASH) J/C 20 (BEHIND UPPER LEFT SIDE OF DASH) LEFT FRONT DOOR COURTESY SWITCH RED/YEL WIRE SECURITY INDICATOR LIGHT (W/ THEFT DETERRENT SYSTEM) TRANSPONDER KEY AMPLIFIER (INSIDE TOP OF STEERING COLUMN) TRANSPONDER KEY COMPUTER (BEHIND UPPER CENTER OF DASH) TXCT UNLOCK WARNING SWITCH (ON UPPER STEERING COLUMN) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE