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Ignition coils of engines DOHC
Ignition coils of engines DOHC are equipped with a built-in switch. Measuring the resistance of the primary winding. Connect the negative terminal ("-"), the source voltage of 3 V and a contact "2" terminal switch; check whether there is electrical conductivity between contacts "3" and "2" when the contact "1" and the positive terminal ("+") are connected and disconnected. When you connect the contact "3" with the positive ("+") should be approximately 0.86 ohms resistance between the contacts "1" and "2", and when you disconnect the contact "3" of the positive ("+"), the conductivity between the contacts "1" and "2" must be absent. Otherwise, replace the switch.
| Fig. 2.127. Measuring the resistance of the secondary winding of the ignition coil of engines DOHC
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Measuring the resistance of the secondary winding. Measure the resistance between the contacts of high voltage ignition coil (Fig. 2.127). Nominal impedance - about 12.1 ohms.
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