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 ...

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On-vehicle inspection
1. INSPECT PRESSURE SWITCH NO.1. (a) Magnetic clutch control: Inspect pressure switch operation.  Set on the manifold gauge set. Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (-) lead to terminal 1.  Check continuity between terminals when r ...