Charging System Diagnostics

Tests 1 - 3:

Tests 4 - 8:

Test 9:

SYMPTOM
CHECKING CHARGING SYSTEM OPERATION WITH NO DTC'S

POSSIBLE CAUSES
- Trouble codes present
- Voltage difference >= 1 Volt
- Generator field terminal intermittent defective
- Generator ground circuit high resistance
- B+ circuit high resistance (0.4 Volt)
- B+ circuit high resistance (1 Volt)
- PCM defective (charging system no code)
- Generator belt visibly defective
- Trouble codes present 1600 RPM