Test Procedure Using Multimeter

This test requires a Rotunda 73 Digital Multimeter 105-R0051 or equivalent.

1. Turn the ignition off and make sure there are no electrical loads on. After determining the compartment lamp is turning off properly, disconnect the engine compartment lamp miniature bulb.
2. Check the battery voltage. If the voltage is under 11.5 volts, charge the battery to above 11.5 volts.







3. Disconnect the battery ground cable. Connect the ammeter leads to the battery.
4. The current reading (current drain) should be less than 0.05 amps. If it exceeds 0.05 amps, it indicates a constant current drain which could cause a discharged battery. Possible sources of current drain may be a vehicle lamp (glove compartment, underhood, etc.) that does not turn off. If the problem is not a lamp, remove the fuses from the interior fuse junction panel one at a time until the cause of the drain is located. If drain is still undetermined, remove fuses one at a time at the engine compartment fuse junction panels to find the problem circuit.