2. Radiator Fan Control Circuit Open

Turn the ignition off.

Disconnect the Radiator Fan Control Module harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the Radiator Fan Control circuit from the PCM C4 harness connector to the Radiator Fan Control Module harness connector.

Fig 1: Measuring Resistance Of Radiator Fan Control Circuit

Courtesy of DAIMLERCHRYSLER CORP.

Is the resistance below 5.0 ohms?

Yes >> Go To 3
No >> Repair the Radiator Fan Control circuit for an open.
See POWERTRAIN VERIFICATION TEST - VER 2 .