Where To Get Alternator Tested. Furthermore can auto parts store test alternator. The test rig will load test your alternator to ensure that it gives sufficient voltage.
While your car is running disconnect the positive battery cable. Cartman 12V Car Battery Alternator Tester Test Battery Condition Alternator Charging LED Indication. Also start the engine and use your DVOM to check the charging output of the alternator.
If you have a Check Engine light on connect a code reader to the diagnostic port.
But you can perform a basic charging system output test using a digital multimeter set to DC. You can bring the vehicle to AutoZone and have the alternator tested on the vehicle to ensure the charging system is performing correctly. With the engine off battery voltage should be between 125 and 128 volts. Stress test the alternator - Place a load on the alternator by turning on the headlights the radio and the air conditioning.
