pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Engine Controls - Aftermarket Accessory Usage|Page 1782 > < Engine Controls - Aftermarket Accessory Usage|Page 1780
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ECM - DIAGNOSIS CHART

1.

Chart C-1 ECM replacement check, or

2.

Any diagnostic chart where "Replace ECM" is the conclusion, especially if a footnote indicates checking certain circuits for less than 20 OHM's
resistance.

It is strongly suggested that this chart be used whenever an ECM replacement is indicated for 1982-87 vehicles.

Engine Controls - Aftermarket Accessory Usage|Page 1782 > < Engine Controls - Aftermarket Accessory Usage|Page 1780