FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Checking the PCM Power and Ground Circuits

Tests 662 - 664:





SYMPTOM
CHECKING THE PCM POWER AND GROUNDS

POSSIBLE CAUSES
- Fused ignition switch output circuit open
- PCM ground circuit(s) open
- Fused B(+) circuit less than 10.0 volts