User's Manual

CHARGING SYSTEM TEST (Alternator / Generator / Voltage Regulator)

Before running the charging system test, inspect vehicles charging system for low voltage or

over-voltage condition, otherwise you could damage the battery.

Alternator/Generator should be at normal operating temperature before running test.

1. Follow steps 1-3 for battery load test.

2. Turn off all electrical accessories and run vehicle at 1500 R.P.M.

3. DO NOT PUSH LOAD SWITCH

4. Note meter reading with all electrical accessories off. One of three conditions will apply:

a) Voltage less than 13.5 volts indicates faulty alternator.

b) Voltage between 13.5 volts and 15 volts indicates charging system is good.

c) Voltage over 15 volts indicates faulty voltage regulator

5. With headlights and blower motor on high, repeat step 4.