Checking the operation of the cooling system fan at low temperatures (below 83°C)
Turn on the ignition (START (IG)).
Make sure the cooling fan is not spinning.
Turn off the ignition (START (IG)).
Disconnect the temperature sensor connector.
Short the contacts on the temperature sensor connector.
Turn on the ignition (START (IG)).
Make sure the cooling fan is spinning.
Otherwise, check the fuses, cooling fan relay and cooling fan, then check for an open in the circuit between the fan relay and the temperature sensor.
Turn off the ignition (START (IG)).
Connect the temperature sensor connector.
Checking the fan operation
cooling systems at high temperatures (above 90°C).
Start the engine, warm up the coolant to a temperature above 90°C.
Note: The coolant temperature is measured by a standard sensor installed on the lower radiator tank.
Make sure the cooling fan is spinning.
Otherwise, the temperature sensor should be replaced.
Checking the fan motor
Fig. 2.408. Cooling system fan connector
Disconnect the cooling fan connector (fig. 2.408).
Connect the battery and ammeter to the fan connector.
Make sure the fan rotates smoothly, then use the ammeter to determine the current strength.
Nominal current: 13.2A at 20°C.
Connect the cooling fan connector.