Charging System Check

Charging System Schematic:

The charging system test should be performed before testing any individual charging system components. The component tests will determine the type of component service required.

Test instruments used in the charging system test are a voltmeter (0-20- or 0-30-volt scale) and an ohmmeter such as Rotunda Digital Volt Ohm Meter or equivalent.

WARNING: Special care should be taken when using the ohmmeter near "HOT" circuits. Disconnect the component to be checked or the battery cables to prevent damage to the ohmmeter.

Continue through the Diagnosis Charts until service is completed. Then, test system again to see if the service has corrected the condition.

Charging System Diagnosis:

Charging System Test - IAR Alternator:

Charging System Test - IAR Alternator: