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:

Inspection
1. INSPECT MASS AIR FLOW METER (a) Check the output voltage.  Apply battery voltage across terminals 1 (+B) and 2 (E2G).  Connect the positive (+) tester probe to terminal 3 (VG), and negative (-) tester probe to terminal 2 (E2G).  Blow air into the Mass Air Flow (M ...