P0481

Test 1 - 2:

Test 3 - 4:

Test 5:

SYMPTOM
P0481-COOLING FAN 2 CONTROL CIRCUIT (TURBO)

WHEN MONITORED
With the ignition on. Battery voltage greater than 10 volts.

SET CONDITION
An open or shorted circuit is detected in the radiator fan relay control circuits. One Trip Fault.

POSSIBLE CAUSES
- Radiator fan relays 2 and 3 operation
- Fused ignition switch output circuit
- Radiator fan relay #2 control circuit open before the splice
- Radiator fan relay #3 control circuit open before splice
- Radiator fan relay control circuits short to ground
- Radiator fan relay control circuit open after the splice
- Radiator fan relay #2 or #3
- PCM