P2502

Test 1 - 2:

Test 3 - 6:

SYMPTOM
P2502-CHARGING SYSTEM ERROR

WHEN MONITORED
While the engine is running.

SET CONDITION
The ECM cycles the voltage regulator in the generator while monitoring for a change in output voltage. If the voltage does not drop when the regulator is off. the fault is set.

POSSIBLE CAUSES
- Dirty or loose connections
- High resistance in the B+ circuit
- High resistance in the B+ cross over cable
- High resistance in the ground circuit
- Generator
- ECM
- Intermittent condition