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Radiator fan operation defective

Read the instructions below then start the fault diagnostic procedure.

Symptom: Radiator fan operation defective.

Radiator fan operation defective



Fault symptoms

Radiator fan operation defective.

Diagnostic help

The relay outputs can be activated using the diagnostics instrument, as also can the low-speed and high-speed functions.

If no information on coolant temperature is available, the low-speed function will start.

Check the wiring

Jiggle the wiring harness at several points and in different directions to reveal intermittent breaks and short-circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic instrument while doing this.