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:

Electronic circuit inspection procedure
1. BASIC INSPECTION (a) RESISTANCE MEASURING CONDITION OF ELECTRONIC PARTS  Unless stated, all resistance is measured at an ambient temperature of 20 C (68 F). Resistances measured may be outside the specifications if measured at high temperatures, i.e. immediately after the vehi ...