P0622

Tests 1 - 3:

Tests 4 - 9:

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
- Wiring harness intermittent
- Inspect wiring harness
- ASD relay output circuit open
- Generator field driver circuit shorted to ground
- Generator field driver circuit open
- Generator field coil open
- Generator field coil shorted
- Powertrain control module