Charging System Diagnostics

Tests 1 - 3:

Tests 4 - 8:

Test 9:

SYMPTOM
CHARGING SYSTEM NO CODE

POSSIBLE CAUSES
- Trouble codes present 2000 rpm
- Trouble codes present
- Voltage difference < 1 volt
- Generator field terminal intermittent defect
- Generator ground circuit high resistance
- Generator belt condition
- B(+) circuit high resistance (> 0.4 volt)
- B(-) circuit high resistance (> 0.1 volt)
- PCM (charging system no code)