Toyota Sienna I (1997-2003) j/c 18 (underside of steering column) Wiring diagrams

1 8 9 10 11 12 17 18 19 GND MHC MHH IG+ 3 2 4 1 VMC BLWC 4 5 6 7 8 9 14 15 16 18 RRHI RRME RRLO RBAT RRAT RRON VMH BLWH HRH RG A/C CONTROL ASSEMBLY AUTO BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLOWER MOTOR (REAR COOLING) (ON REAR COOLING UNIT) BLOWER MOTOR (REAR HEATER) (ON REAR HEATER UNIT) BLOWER RESISTOR TRANSISTOR (COOLER) (RIGHT REAR CORNER OF VEHICLE) BLOWER RESISTOR TRANSISTOR (HEATER) (UNDER RIGHT MIDDLE SEAT) BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) HEATER FUSE DRIVER SIDE R/B 5 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPARTMENT) DOME FUSE FRONT BLOWER MOTOR SWITCH FUSIBLE LINK BLOCK (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE GRN/ORG WIRE GRN/YEL WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT IN ON OR START HRC BLWC VMC J/B 3 (BEHIND COMBINATION METER) J/C 17 (UPPER RIGHT SIDE OF DASH) J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 23 (FOWARD OF RIGHT REAR FENDERWELL) J/C 3 (LEFT SIDE OF CONBINATION METER) J/C 6 (BEHIND TOP CENTER OF DASH) J/C 8 (BEHIND TOP CENTER OF DASH) LT GRN WIRE PNK 3 2 1 BMC BLWR GND WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE R/B 7 (LEFT FRONT OF ENGINE COMPARTMENT) REAR CLR FUSE R/B 8 (RIGHT REAR OF ENGINE COMPT) REAR CLR RELAY RA/C REAR A/C SWITCH REAR HEATER INTAKE AIR TEMPERATURE SENSOR (UNDER RIGHT MIDDLE SEAT) REAR HEATER RELAY RED WIRE RED/BLU WIRE RED/WHT WIRE RHI RLO RMI RR A/C FUSE SERVO MOTOR (UNDER CENTER OF MIDDLE SEAT) TINH TPH TSET TSET VIO WIRE VIO/RED WIRE WHT WIRE WHT/BLK WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

A/C A/C AMBIENT TEMPERATURE SENSOR (RIGHT FRONT OF ENGINE COMPARTMENT) A/C MAGNETIC CLUTCH, LOCK SENSOR (ON LEFT FRONT OF ENGINE) A/C ROOM TEMPERATURE SENSOR (ON LEFT CENTER OF DASH) A/C SOLAR SENSOR (UPPER LEFT SIDE OF DASH) A/C THERMISTOR (BEHIND LOWER RIGHT SIDE OF DASH) ACMG AIR MIX CONTROL SERVO MOTOR (BEHIND CENTER OF DASH) BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE DOME FUSE DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPARTMENT) GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOT AT ALL TIMES J/C 17 (BEHIND UPPER RIGHT SIDE OF DASH) J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 6 (BEHIND TOP CENTER OF DASH) LT GRN/BLK WIRE MG CLT RELAY MH MC ORG/ WIRE R/B 8 (RIGHT REAR OF ENG COMPT) REAR A/C EVAPORATOR TEMPERATURE SENSOR (ON CENTER OF ROOF) RED WIRE RED/BLU WIRE RED/WHT WIRE TACH THWO VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLU WIRE

A/C A/C AMBIENT TEMPERATURE SENSOR (RIGHT FRONT OF ENGINE COMPARTMENT) A/C MAGNETIC CLUTCH, LOCK SENSOR (ON LEFT FRONT OF ENGINE) A/C ROOM TEMPERATURE SENSOR (ON LEFT CENTER OF DASH) A/C SOLAR SENSOR (UPPER LEFT SIDE OF DASH) A/C THERMISTOR (BEHIND LOWER RIGHT SIDE OF DASH) ACMG AIR MIX CONTROL SERVO MOTOR (BEHIND CENTER OF DASH) BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE DOME FUSE DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPARTMENT) GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOT AT ALL TIMES J/C 17 (BEHIND UPPER RIGHT SIDE OF DASH) J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 6 (BEHIND TOP CENTER OF DASH) LT GRN/BLK WIRE MG CLT RELAY MH MC ORG/ WIRE PNK WIRE R/B 8 (RIGHT REAR OF ENG COMPT) REAR A/C EVAPORATOR TEMPERATURE SENSOR (ON CENTER OF ROOF) RED WIRE RED/BLU WIRE RED/WHT WIRE TACH THWO VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLU WIRE

1 2 3 4 5 6 7 SCTY WRNP PKBL 7 8 9 10 11 12 IG BLK WIRE CIG FUSE DCTY DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) DOME FUSE GAUGE FUSE GRN/ORG WIRE GRN/RED WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN RUN OR ACC HOT IN RUN OR START HOT W/ LIGHT SW IN HEAD OR PARK INTEGRATION RELAY INTERIOR LIGHTS SYSTEM WARNING SYSTEM WARNING SYSTEM J/C 18 (UNDERSIDE OF STEERING COLUMN) LEFT FRONT DOOR COURTESY SWITCH NOT USED NOT USED ORG/ WIRE PCTY PNK/BLK WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE TAIL FUSE TRLY HRLY WARNING SYSTEM WARNING SYSTEM WHT/BLK WIRE WRN YEL/GRN WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ACT+ ACTD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 PANI BCTY 7 8 9 10 11 12 IG ANTI-THEFT SYSTEM DOOR LOCKS SYSTEM ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM INTERIOR LIGHTS SYSTEM AUTO TRLY BLK WIRE BLK/RED WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/RED WIRE BZR CIG FUSE CSE CSO CSB P/W DCTY DOOR FUSE DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM WARNING SYSTEM DOOR LOCKS SYSTEM INTERIOR LIGHTS SYSTEM DOUT ACT- DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) DOME FUSE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN RUN OR ACC HOT IN RUN OR START HOT W/ LIGHT SW IN HEAD OR PARK INTEGRATION RELAY INTERIOR LIGHTS SYSTEM DOOR LOCKS SYSTEM INTERIOR LIGHTS SYSTEM WARNING SYSTEM DOOR LOCKS SYSTEM J/B 3 (BEHIND CLUSTER) J/C 18 (UNDERSIDE OF STEERING COLUMN) LEFT FRONT DOOR COURTESY SWITCH LSDS LSWD WRN LT GRN WIRE LT GRN/RED WIRE ORG/ WIRE PCTY PNK WIRE POWER WINDOWS SYSTEM RDA PRG WRNP RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE SCTY PKBL LSWP SLD TAIL FUSE TRUNK, TAILGATE, FUEL DOOR SYSTEM (POWER SLIDING DOOR CIRCUIT) VIO WIRE VIO/WHT WIRE WARNING SYSTEM WARNING SYSTEM WHT/BLK WIRE WRN YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

CIG FUSE CLOCK DRIVER SIDE J/B (LEFT OF STEERING COLUMN) GRN WIRE HOT AT ALL TIMES ENGINE ROOM J/B 2 (LEFT SIDE OF ENG COMPT) DOME FUSE HOT IN ACC OR ON HOT W/ TAIL RELAY ENERGIZED J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 2 (BEHIND LEFT SIDE OF INSTRUMENT CLUSTER) J/C 6 (BEHIND TOP CENTER OF DASH) PANEL FUSE PNK WIRE RED WIRE RED/WHT WIRE WHT/BLK WIRE

2 1 DOOR OFF ON 3 2 DOOR OFF ON BLK WIRE DIODE (DOME 4) (BEHIND UPPER LEFT CENTER OF DASH) DOOR DOOR OFF ON DOUT DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) DOME FUSE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START INTEGRATION RELAY INTERIOR LIGHT 1 (W/ VANITY LIGHTS) INTERIOR LIGHT 1 (W/O VANITY LIGHTS) INTERIOR LIGHT 2 J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 9 (BEHIND TOP CENTER OF DASH) LEFT FRONT DOOR COURTESY LIGHT LEFT VANITY LIGHT PCTY PERSONAL LIGHT (W/ VANITY LIGHTS) PERSONAL LIGHT (W/O VANITY LIGHTS) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY LIGHT RIGHT VANITY LIGHT WHT WIRE WHT/BLK WIRE YEL WIRE

BACK DOOR COURTESY SWITCH BCTY SCTY BLK WIRE BLU WIRE BLU/WHT WIRE COMBINATION METER DCTY DIODE (COURTESY 2) (NEAR LEFT REAR WHEELHOUSE) DIODE (COURTESY 3) (BEHIND CENTER OF DASH) DIODE (DOME 5) (BEHIND UPPER LEFT CENTER OF DASH) DOOR FUSE DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HOT AT ALL TIMES IGNITION KEY CYLINDER LIGHT INTEGRATION RELAY J/B 3 (BEHIND INSTRUMENT CLUSTER) J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 22 (RIGHT REAR CORNER OF VEHICLE) J/C 5 (BEHIND RIGHT SIDE OF DASH) J/C 6 (BEHIND RIGHT SIDE OF DASH) LEFT FRONT DOOR COURTESY SWITCH LEFT QUARTER PANEL) LEFT SLIDE DOOR COURTESY LIGHT LUGGAGE COMPARTMENT LIGHT SWITCH OPEN DOOR WARNING RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY SWITCH LEFT SLIDE DOOR COURTESY SWITCH RIGHT SLIDE DOOR COURTESY LIGHT RIGHT SLIDE DOOR COURTESY SWITCH WHT WIRE WHT/BLK WIRE WRN YEL WIRE

2 1 DOOR OFF ON 3 2 DOOR OFF ON BLK WIRE BLU/WHT WIRE DCTY DOOR DOOR OFF ON DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) DOME FUSE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION KEY CYLINDER LIGHT INTEGRATION RELAY INTERIOR LIGHT 1 (W/ VANITY LIGHTS) INTERIOR LIGHT 1 (W/O VANITY LIGHTS) INTERIOR LIGHT 2 J/B 3 (BEHIND INSTRUMENT CLUSTER) J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 9 (BEHIND TOP CENTER OF DASH) LEFT FRONT DOOR COURTESY LIGHT LEFT VANITY LIGHT PCTY PERSONAL LIGHT (W/ VANITY LIGHTS) PERSONAL LIGHT (W/O VANITY LIGHTS) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY LIGHT RIGHT VANITY LIGHT SCTY WHT WIRE WHT/BLK WIRE

ANTI-LOCK BRAKE SYSTEM BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED (OR BRN/BLK) WIRE BRN/RED WIRE CIG FUSE COMBINATION METER DIODE (P/N) (W/ DOOR LOCK CONTROL) (BEHIND CENTER OF DASH, TAPED TO HARNESS) DRIVER SIDE J/B 1 (BEHIND DASH, LEFT OF STEERING COLUMN) ENGINE COOLANT TEMPERATURE SENSOR (ON RIGHT FRONT SIDE OF ENGINE) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRY WIRE HOT IN ON OR ACC HOT IN ON OR START J/B #3 (BEHIND INST CLUSTER) J/C 17 (BEHIND UPPER RIGHT SIDE OF DASH) J/C 18 (UNDERSIDE OF STEERING COLUMN) J/C 2 (BEHIND LEFT SIDE, TOP OF DASH) J/C 2 J/C 2, 3 (BEHIND LEFT SIDE, TOP OF DASH) J/C 3 (LEFT FRONT SHOCK TOWER) J/C 7 (BEHIND TOP CENTER OF DASH) J/C 7 (TOP CENTER OF DASH) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MALF IND LAMP O/D OFF IND O/D MAIN SWITCH ORG/ WIRE PNK WIRE PNK/BLU WIRE PTNK RED WIRE RED/BLK WIRE RED/YEL WIRE SPEEDO- METER TACHO- METER THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) VAPOR PRESSURE SENSOR (LEFT SIDE OF FIREWALL) VCC VIO WIRE VIO/YEL WIRE VSV (EVAP) (TOP OF ENGINE) VSV (VAPOR PRESSURE SENSOR) (LEFT REAR OF ENG COMPT) WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE