Operation CHARM: Car repair manuals for everyone.
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Notes

Fig. 1 Alternator Charging System:






Fig. 2 Alternator Charging System:






The charging systems in Fig. 1 and 2 are equipped with self-diagnostic capabilities which monitor system operation and alert vehicle operator to malfunctions. Any problems sensed in system operation will be indicated by illumination of the alternator warning lamp.
When the alternator system is functioning normally, the alternator system voltages will be as specified, Fig. 5.

Fig. 5 Normal Alternator Operation Voltage Specifications: