Late car models
Examination
Checking the ignition coil is carried out using an ohmmeter.
Disconnect the ground wire from the battery.
Remove the protective casing of the ignition coil and disconnect the wires from the coil.
If stub (S) squeezed out of the ignition coil, replace the coil.
Check the coil for cracks, if any, replace the coil.
Measure the resistance of the secondary winding of the coil. To do this, connect an ohmmeter to terminals 15 and 4. Replace the ignition coil only if the measured values are very different from the values given below or if there is a problem with the ignition.
Connect the electrical wires to the ignition coil.
Put on the protective cover.
Connect ground wire to battery.
Attention: When replacing, never install a coil designed for a contact ignition system. This can lead to failure of the control unit.
Attention: The twelve-cylinder engine model has one coil for each bank of cylinders, two in total. Ignition coils are not repairable and should be replaced if damaged.