Diagnosis and Testing

The charging system requires periodic inspection and service. Specific problem symptoms, their possible cause, and the service required are listed in the chart below. The service actions require a thorough visual inspection. Problems identified must be corrected before proceeding with electrical tests. These electrical tests include: an alternator output test, charging circuit voltage-drop tests, a voltage regulator (non-IC) test, charging circuit relay (lamp, ignition, engine) tests, and alternator bench tests.

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Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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