Toyota Highlander Service Manual: Cooling fan system (2AZ-FE)

Inspection

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

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 WITH LOW TEMPERATURE (Below 83 C (181 F)) (a) Turn the ignition ...

More about Toyota Highlander:

General information
A large number of ECU controlled systems are used in the HIGHLANDER. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU controlled sys ...