P1479

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 8:

SYMPTOM
P1479-TRANSMISSION FAN CONTROL RELAY

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

SET CONDITION
An open or shorted circuit is detected in the Transmission fan relay control circuit.

POSSIBLE CAUSES
- Transmission fan relay intermittent operation
- Intermittent condition
- Fused ignition switch output circuit
- Transmission fan relay resistance
- Transmission fan relay control circuit open
- Transmission fan relay control circuit short to ground
- PCM