CHARGING & STARTING SYSTEM
90-884294 OCTOBER 2001 Page 2B-13
Diagnosis of Alternator System on Engine
1. If problem is an undercharged battery, verify condition has not been caused by exces-
sive accessory current draw or by accessories which have accidentally been left on.
2. Check physical condition and state of charge of battery. Battery must be at least 75%
(1.230 specific gravity) of fully charged to obtain valid results in the following tests. If
not, charge battery before testing system.
3. Inspect entire alternator system wiring for defects. Check all connections for tightness
and cleanliness, particularly battery cable clamps and battery terminals.
IMPORTANT: RED output lead from alternator must be tight. A darkened RED
sleeve indicates lead was loose and becoming hot.
4. Check alternator drive belt for cracks and fraying. Replace if necessary. Check belt
tension.
To Next Page
Loading...
