FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Early Production (SBEC)

Test 1 - 2:




Test 3 - 7:






SYMPTOM
P0622-GENERATOR FIELD NOT SWITCHING PROPERLY

WHEN MONITORED
With the ignition on. Engine running.

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

POSSIBLE CAUSES
- Generator field performance
- (F142) GEN field source circuit open
- (K20) generator field driver circuit short to ground
- (K20) generator field driver circuit open
- Generator field coil open
- Generator field coil shorted
- PCM