Voltage test
Using a voltmeter, measure the voltage in sequence at the following four points:
- ignition on voltage «U» at the battery terminals must be at least 11 V;
- voltage value «U» on terminal «+» ignition coil must be equal to the voltage value «U». If «U 1» equal to 0, it means that the supply voltage is not applied to the coil;
- voltage «U 2» between terminals «+» And «-» coil should be 0. Otherwise, the switch or wire No. 3 coming from the ignition coil to the first terminal of the switch connector block is shorted to «mass».
Checking the ignition coil
Check the resistance of the secondary winding with an ohmmeter, which should be in the range of 10-30 kOhm, and make sure that there is no short circuit to «mass» car.