FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

P0481

Test 1 - Test 2:




Test 3 - Test 6:






SYMPTOM
P0481-HIGH SPEED FAN CONTROL RELAY CIRCUIT

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 circuit. One trip Fault.

POSSIBLE CAUSES
- High speed radiator fan relay operation
- (A16) Fused ignition switch output circuit
- High speed radiator fan relay resistance
- (C27) High speed rad fan relay control circuit open
- (C27) High speed rad fan relay control circuit short to ground
- PCM