With Clamp on DC Ammeter Test Procedure

1. Turn the ignition switch OFF and make sure there are no electrical loads. After determining that the engine compartment lamp is turning off properly, disconnect the lamp.







2. Clamp the meter clip securely around positive or negative battery cable (all cables if two or more lead to post).

The current reading (current drain) should be less than 0.05 amp. If it exceeds 0.05 amp, it indicates a constant current drain which could cause a discharged battery. Possible sources of current drain are vehicle lamps (such as engine compartment, glove compartment and luggage compartment) that do not shut off properly.

If the drain is not caused by a vehicle lamp, remove the fuses one at a time until the cause of the drain is located. If drain is still undetermined, disconnect leads at starter relay one at a time to find the problem circuit.

NOTE: Do not start vehicle with clip on cable.