FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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P1389

Tests 1 - 3:




Tests 4 - 8:




Test 9:




SYMPTOM
P1389-NO ASD RELAY OUTPUT VOLTAGE AT PCM

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

SET CONDITION
No voltage sensed at the PCM when the ASD relay is energized.

POSSIBLE CAUSES
- Intermittent Condition
- ASD Relay
- Fused B+ Circuit
- ASD Relay Output Circuit Open
- ASD Relay Output Circuit Open
- PCM No Start
- PCM Start