Late Production (NGC)

Test 1 - 2:

Test 3 - 7:

SYMPTOM
P0622-GENERATOR FIELD CONTROL CIRCUIT

WHEN MONITORED
With the ignition on. Engine running.

SET CONDITION
When the PCM tries to regulate the generator field with no result during monitoring. One Trip Fault.

POSSIBLE CAUSES
- Good trip equal to zero
- Generator operation
- (Z1) GEN field ground circuit open
- (K20) GEN field control circuit shorted to battery voltage
- (K20) GEN field control circuit shorted to ground
- (K20) GEN field control circuit open
- PCM