P1389

Test 1 - 3:

Test 4 - 7:

SYMPTOM
P1389-NO ASD RELAY OUTPUT VOLTAGE AT PCM

WHEN MONITORED
With ignition key on, battery voltage above 10.4 volts, and engine RPM greater than 400.

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

POSSIBLE CAUSES
- Good trip equal to zero
- ASD relay
- Internal fused B+ circuit
- (A142) ASD relay output circuit open
- (A142) ASD output circuit open
- PCM