Checking the Generator Capacitor (VAZ-21213)

The capacitor serves to protect the vehicle's electronic equipment from voltage pulses in the ignition system, as well as to reduce interference with radio reception.

Damage to the capacitor or weakening of its fastening on the generator (deterioration of contact with the "ground") is detected by an increase in interference to radio reception when the engine is running.

The condition of the capacitor can be approximately checked with a megohmmeter or tester (on the scale 1-10 MOhm). If there is no break in the capacitor, then at the moment of connecting the device probes to the terminals of the capacitor, the arrow should move towards decreasing resistance, and then gradually return back.

The capacitor capacity, measured with a special device, should be 2.2 μF±20%.

[The text is taken from the online resource: www.VAZbook.ru]