Toyota Highlander Service Manual: Cooling fan system (3MZ-FE)

Inspection

1. INSPECT THERMOSTAT HINT: The valve opening temperature is stamped on the thermostat. (a) Immerse the thermostat in water and gradually heat the water. (b) Check the valve opening tempe ...

On-vehicle inspection

HINT: The cooling fan may rotate when the ignition switch is turned from ACC to ON. This is normal. 1. CHECK COOLING FAN OPERATION AT LOW TEMPERATURE (Below 83 C (181 F)) (a) Turn the ignition sw ...

More about Toyota Highlander:

Terminals of ECU
1. CHECK SLIDING ROOF DRIVE GEAR SUB- ASSY (SLIDING ROOF ECU) (a) Disconnect the sliding roof ECU connector, and check the voltage or continuity of each terminal of the wire harness side connector. If the result is not as specified, there may be a malfunction on the wire harness. ...