Test 6A - Low Or High Battery
WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
Using an external voltmeter, check battery voltage. If battery voltage is 11.7-13.0 volts, replace scan tool. Perform TEST VER-1. If battery voltage is not 11.7-13.0 volts, repair charging system as necessary.