P1491

Test 1 - 4:

Test 5 - 6:

SYMPTOM
P1491-COOLING FAN RELAY CONTROL CIRCUIT

POSSIBLE CAUSES
- Good trip equal to zero
- Internal fused B+ circuits
- (Y145) condenser fan relay control circuit open
- (Y145) condenser fan relay control circuit shorted to ground
- Condenser fan relay
- PCM