Contents Wiring diagrams Section: Electrical Component Locations All sections

Electrical Component Locator: Other Toyota Highlander I

BUZZERS, RELAYS & TIMERS

ComponentComponent Location
ABS MTR RelayOn engine room R/B.
ABS SOL RelayOn engine room R/B.
ACC RelayOn instrument panel J/B.
A/F RelayOn engine room R/B.
Circuit Opening RelayOn R/B No. 1.
Deicer RelayOn R/B No. 1.
DRL No. 2 RelayOn engine room R/B No. 3.
DRL No. 3 RelayOn engine room R/B No. 3.
DRL No. 4 RelayOn engine room R/B No. 3.
EFI RelayOn engine room J/B.
Fan No. 1 RelayOn engine room R/B.
Fan No. 2 RelayOn engine room R/B.
Fan No. 3 RelayOn engine room R/B.
Foglight RelayOn instrument panel J/B.
Headlamp RelayOn engine room J/B.
Heater RelayRight of instrument panel J/B. (Схема №5)
Horn RelayOn engine room J/B.
MG CLT RelayOn engine room J/B.
RR DEF RelayOn engine room J/B.
Seat Heater RelayOn R/B No. 1.
Skid Control RelayOn ABS R/B.
Starter RelayOn engine room R/B.
Taillight RelayOn instrument panel J/B.
Turn Signal FlasherRight of instrument panel J/B. (Схема №5)
VSC Warning BuzzerAbove of instrument panel J/B.
Wireless Door Lock Buzzer (2.4L)On left rear of engine compartment. (Схема №1)
Wireless Door Lock Buzzer (3.0L)On left rear of engine compartment. (Схема №3)

BUZZERS, RELAYS & TIMERS LOCATION

CIRCUIT PROTECTION DEVICES

ComponentComponent Location
ABS R/BOn left rear of engine compartment. (Схема №4)
Center J/BBehind upper center of dash. (Схема №5)
Engine Room J/BOn left side of engine compartment. (Схема №4)
Engine Room R/BOn left side of engine compartment. (Схема №4)
Engine Room R/B No. 3On right front of engine compartment. (Схема №4)
Fusible Link BlockOn left side of engine compartment. (Схема №4)
Instrument Panel J/BBehind left side of dash. (Схема №5)
Passenger Side J/BBehind right side of dash. (Схема №5)
R/B No. 1Left of instrument panel J/B. (Схема №5)

CIRCUIT PROTECTION DEVICES LOCATION

CONTROL UNITS

ComponentComponent Location
A/C Control AssemblyBehind center of dash. (Схема №5)
Body ECUBehind right side of dash. (Схема №5)
Cruise Control ECUBehind left side of dash. (Схема №5)
Engine Control ModuleBehind right side of dash. (Схема №5)
Ignition Coil & IgnitorOn top of each spark plug.
Shift Lock ECUAt base of shifter lever. (Схема №5)
Skid Control ECUAbove instrument panel J/B. (Схема №5)
Sliding Roof Control ECUOn front of sliding roof.
Theft Deterrent ECUBehind right side of dash. (Схема №5)
Wireless Door Lock ECUOn right side of luggage compartment.

CONTROL UNITS LOCATION

MOTORS

ComponentComponent Location
Air Inlet Control Servo MotorBehind upper center of dash.
Air Mix Control Servo MotorBehind center of dash.
Air Vent Mode Control Servo MotorBehind left center of dash.
Blower MotorBehind right side of dash.
Brake Actuator (2.4L)On left rear of engine compartment. (Схема №1)
Brake Actuator (3.0L)On left rear of engine compartment. (Схема №2)
Condenser Fan Motor (2.4L)Behind radiator. (Схема №1)
Condenser Fan Motor (3.0L)Behind radiator. (Схема №2)
Cruise Control Actuator (2.4L)On right rear of engine compartment. (Схема №1)
Cruise Control Actuator (3.0L)On right rear of engine compartment. (Схема №2)
Front Wiper Motor (2.4L)On left rear of engine compartment. (Схема №1)
Front Wiper Motor (3.0L)On left rear of engine compartment. (Схема №2)
Radiator Fan MotorBehind radiator.
Washer Motor (2.4L)On right front of engine compartment. (Схема №1)
Washer Motor (3.0L)On right front of engine compartment. (Схема №3)

MOTORS LOCATION

SENDING UNITS & SENSORS

ComponentComponent Location
ABS Speed Sensor (4)At respective wheel.
A/C Ambient Temperature Sensor (3.0L)On front center of grille. (Схема №2)
A/C Magnetic Clutch & Lock Sensor (2.4L)On A/C compressor. (Схема №1)
A/C Magnetic Clutch & Lock Sensor (3.0L)On A/C compressor. (Схема №2)
A/C Solar SensorOn upper left side of dash.
Air Bag Sensor AssemblyBelow shifter console. (Схема №5)
Air Bag Sensor (Left) (2.4L)On left front of vehicle. (Схема №1)
Air Bag Sensor (Left) (3.0L)On left front of vehicle. (Схема №2)
Air Bag Sensor (Right) (2.4L)On right front of vehicle. (Схема №1)
Air Bag Sensor (Right) (3.0L)On right front of vehicle. (Схема №2)
Air Fuel Ratio Sensor (Bank 1 Sensor 1) (2.4L)On exhaust manifold.
Air Fuel Ratio Sensor (Bank 1 Sensor 1) (3.0L)On right exhaust manifold.
Air Fuel Ratio Sensor (Bank 2 Sensor 1) (2.4L)On exhaust manifold.
Air Fuel Ratio Sensor (Bank 2 Sensor 1) (3.0L)On left exhaust manifold.
Automatic Light Control SensorOn upper left side of dash.
Camshaft Position Sensor (2.4L)On rear center of engine. (Схема №1)
Counter Gear Speed Sensor (2.4L)Left side of engine compartment. (Схема №1)
Counter Gear Speed Sensor (3.0L)Left side of engine compartment. (Схема №2)
Crankshaft Position Sensor (2.4L)On left front of engine. (Схема №1)
Crankshaft Position Sensor (3.0L)On left front of engine. (Схема №2)
Deceleration SensorAt base of shifter lever.
Engine Coolant Temperature Sensor (2.4L)On left rear of engine. (Схема №1)
Engine Coolant Temperature Sensor (3.0L)On front center of engine. (Схема №2)
Evaporator Temperature SensorBehind right side of dash.
Fuel Pump & SenderIn fuel tank.
Fuel Pump Sender (Sub)At rear of vehicle.
Heated Oxygen Sensor (Bank 1 Sensor 2) (3.0L)On exhaust, after catalytic converter.
Heated Oxygen Sensor (Bank 1 Sensor 2) (2.4L)On exhaust, after catalytic converter.
Heated Oxygen Sensor (Bank 2 Sensor 2) (2.4L)On exhaust, after catalytic converter.
Knock Sensor (2.4L)On right side of engine. (Схема №1)
Knock Sensor No. 1 (3.0L)On right center of engine. (Схема №3)
Knock Sensor No. 2 (3.0L)On left center of engine. (Схема №3)
Mass Airflow Meter (2.4L)On left rear of engine compartment. (Схема №1)
Mass Airflow Meter (3.0L)On left rear of engine compartment. (Схема №3)
Room Temperature SensorBehind center of dash.
Seat Belt Warning Occupant Detection SensorUnder passenger's seat.
Side Air Bag Sensor (Left) (2.4L)At base of left "B" pillar.
Side Air Bag Sensor (Left) (3.0L)At base of left "B" pillar.
Side Air Bag Sensor (Right) (2.4L)At base of right "B" pillar.
Side Air Bag Sensor (Right) (3.0L)At base of right "B" pillar.
Steering SensorIn steering column.
Throttle Position SensorOn side of throttle body.
Turbine Speed Sensor (2.4L)On side of transmission. (Схема №1)
Turbine Speed Sensor (3.0L)On side of transmission. (Схема №3)
Vapor Pressure SensorAt rear of vehicle.
VVT Sensor (Left) (3.0L)On left rear of engine. (Схема №3)
VVT Sensor (Right) (3.0L)On right rear of engine. (Схема №3)
Yaw Rate SensorOn rear of vehicle.

SENDING UNITS & SENSORS LOCATION

SOLENOIDS & SOLENOID VALVES

ComponentComponent Location
Camshaft Timing Control Valve (2.4L)On right front of engine. (Схема №1)
Camshaft Timing Control Valve (Left) (3.0L)On left rear of engine. (Схема №2)
Camshaft Timing Control Valve (Right) (3.0L)On right rear of engine. (Схема №2)
Electronically Controlled Transmission SolenoidIn transmission.
Idle Air Control Valve (2.4L)On throttle body. (Схема №1)
Idle Air Control Valve (3.0L)On throttle body. (Схема №3)
Key Interlock SolenoidIn steering column.
VSV (ACIS No. 1) (3.0L)On top center of engine. (Схема №3)
VSV (ACIS No. 2) (3.0L)On rear center of engine. (Схема №3)
VSV (ACM) (3.0L)On left front of engine compartment. (Схема №3)
VSV (Canister Closed Valve) (2.4L)On left rear of engine compartment. (Схема №1)
VSV (Canister Closed Valve) (3.0L)On left rear of engine compartment. (Схема №3)
VSV (EVAP) (2.4L)On left rear of engine compartment. (Схема №1)
VSV (EVAP) (3.0L)On top center of engine. (Схема №3)
VSV (Pressure Switching Valve)On left rear of vehicle.

SOLENOIDS & SOLENOID VALVES LOCATION

SWITCHES

ComponentComponent Location
A/C Triple Pressure Switch (2.4L)On right front of engine compartment. (Схема №1)
A/C Triple Pressure Switch (3.0L)On right front of engine compartment. (Схема №2)
A/T Indicator SwitchOn left side of transmission.
Back-Up Light SwitchOn left side of transmission.
Brake Pedal Load Sensing SwitchAbove brake pedal.
Brake Warning Switch (2.4L)On master cylinder assembly. (Схема №1)
Brake Warning Switch (3.0L)On master cylinder assembly. (Схема №2)
Engine Hood Courtesy SwitchOn front center of engine compartment.
Oil Pressure Switch (2.4L)On left rear of engine.
Oil Pressure Switch (3.0L)On left front of engine. (Схема №3)
Parking Brake SwitchAt base of parking brake pedal.
Park/Neutral Position SwitchOn left side of transmission.
Power Steering Oil Pressure Switch (2.4L)On front of engine. (Схема №1)
Power Steering Oil Pressure Switch (3.0L)On front of engine. (Схема №3)
Stoplight SwitchAbove brake pedal.
Unlock Warning SwitchIn steering column.
Washer Level Switch (2.4L)On right front of engine compartment. (Схема №1)
Washer Level Switch (3.0L)On right front of engine compartment. (Схема №3)
Water Temperature Switch No. 1 (3.0L)At right front of engine compartment, behind grille. (Схема №3)
Water Temperature Switch No. 2 (3.0L)On rear center of engine. (Схема №3)

SWITCHES LOCATION

MISCELLANEOUS

ComponentComponent Location
Antenna Amplifier (Front)Behind center of dash.
Antenna Amplifier (Rear)In left rear of vehicle.
Blower ResistorBehind right side of dash.
Data Link Connector (DLC) No. 3Under left side of dash.
Diode (Cooling Fan)Behind left side of dash.
Diode (Rear Interior Light)In roof, near rear hatch.
Front Wiper Deicer (2.4L)On left rear of engine compartment. (Схема №1)
Front Wiper Deicer (3.0L)On left rear of engine compartment. (Схема №2)
Ignition Coil & IgnitorOn top of each spark plug.
Junction Connectors No. 1 & 2Behind left headlight.
Junction Connectors No. 3 & 4On right side of engine compartment.
Junction Connectors No. 5 & 6Left side of dash, behind instrument cluster.
Junction Connectors No. 7 & 8Behind right side of dash.
Junction Connector No. 9Behind left kick panel.
Junction Connectors No. 10, 12, 13 & 14On left rear of vehicle.
Junction Connector No. 11On right rear of vehicle.
Junction Connector No. 15Under driver's seat.
Noise Filter (Ignition System) (2.4L)On rear of engine.
Noise Filter (Ignition System) (3.0L)On front center of engine. (Схема №3)
Noise Filter (Rear Window Defogger)On left rear of vehicle.
Option Connector No. 1Behind left kick panel.
Option Connector No. 2Behind upper right side of dash.
Pretensioner (Left)At base of left "B" pillar.
Pretensioner (Right)At base of right "C" pillar.
Stereo Power AmplifierIn luggage compartment.
Theft Deterrent HornOn right side of engine compartment.
Transponder Key AmplifierIn steering column. (Схема №5)

MISCELLANEOUS LOCATION

CONNECTORS

ComponentComponent Location
BA1 (White, 10 Pin)At front side of personal light.
BB1 (White, 13 Pin)At left center pillar.
BC1 (White, 13 Pin)At right center pillar.
BD1 (White, 4 Pin)Under driver's seat.
BE1 (White, 4 Pin)Under front passenger's seat.
BF1 (White, 13 Pin)Under left rear seat.
BG1 (Black, 2 Pin)At left rear of roof.
BG2 (Blue, 6 Pin)At left rear of roof.
BG3 (White, 10 Pin)At left rear of roof.
EA1 (3.0L) (Dark Gray, 4 Pin)At right side of cylinder head. (Схема №7)
EB1 (2.4L) (Gray, 6 Pin)At front side of engine room J/B. (Схема №6)
EB1 (3.0L) (Gray, 6 Pin)At front side of engine room J/B. (Схема №7)
EB2 (2.4L) (Gray, 8 Pin)At front side of engine room J/B. (Схема №6)
EB2 (3.0L) (Gray, 8 Pin)At front side of engine room J/B. (Схема №7)
IA1 (White, 20 Pin)At left kick panel.
IA2 (White, 12 Pin)At left kick panel.
IB1 (Gray, 7 Pin)At left kick panel.
IB2 (White, 14 Pin)At left kick panel.
IC1 (White, 3 Pin)At left kick panel.
IC2 (White, 13 Pin)At left kick panel.
IC3 (White, 22 Pin)At left kick panel.
ID1 (White, 10 Pin)At left kick panel.
IE1 (White, 8 Pin)Near bottom left front pillar.
IF1 (White, 4 Pin)At right side of instrument panel J/B.
IF2 (White, 10 Pin)At right side of instrument panel J/B.
IF3 (White, 20 Pin)At right side of instrument panel J/B.
IG1 (White, 2 Pin)At upper portion of right dash brace.
IH1 (White, 3 Pin)At upper portion of right dash brace.
II1 (White, 6 Pin)At upper portion of right dash brace.
IJ1 (White, 6 Pin)At upper portion of right dash brace.
IK1 (Yellow, 4 Pin)At right kick panel.
IK2 (White, 22 Pin)At right kick panel.
IK3 (White, 13 Pin)At right kick panel.
IL1 (White, 22 Pin)At upper side of passenger side J/B.
IL2 (White, 7 Pin)At upper side of passenger side J/B.
IM1 (White, 20 Pin)At right kick panel.
IN1 (Gray, 7 Pin)At right kick panel.
IN2 (White, 14 Pin)At right kick panel.
IO1 (White, 13 Pin)At right kick panel.
IO2 (White, 18 Pin)At right kick panel.
IP1 (Blue, 13 Pin)At left side of passenger side J/B.
IP2 (White, 14 Pin)At left side of passenger side J/B.

CONNECTORS LOCATION

GROUNDS

ComponentComponent Location
BAAt left center pillar.
BBAt right center pillar.
BCAt left side of rear crossmember.
BDAt right side of rear crossmember.
BEAt left side of back door.
EA (2.4L)At right front fender apron. (Схема №6)
EA (3.0L)At right front fender apron. (Схема №7)
EB (2.4L)At right front fender apron. (Схема №6)
EB (3.0L)At right front fender apron. (Схема №7)
EC (3.0L)At right side of surge tank. (Схема №7)
ED (3.0L)At rear side of surge tank. (Схема №7)
EE (2.4L)At intake side of cylinder block. (Схема №6)
EF (2.4L)At left side of cylinder block. (Схема №6)
EG (2.4L)Under left headlight. (Схема №6)
EG (3.0L)Under left headlight. (Схема №7)
EH (2.4L)Under left headlight. (Схема №6)
EH (3.0L)Under left headlight. (Схема №7)
IAAt left kick panel. (Схема №5)
IBAt right dash brace. (Схема №5)
ICAt right kick panel. (Схема №5)

GROUNDS LOCATION