The ignition coil is checked with an ohmmeter.
Switch off the ignition.
1.25/1.4L engine: Remove six bolts and engine cover.
Note: On the 1.3l engine, the ignition coil is located on the rear side of the cylinder block.
Examination
Disconnect all four high-voltage wires from the ignition coil by compressing the two fastening tabs of each plug.
Check the resistance of the primary winding: to do this, remove the plug by pressing the metal clip.
The figure shows the plug (1) ignition coils. Connect an ohmmeter to the appropriate terminals of the ignition coil and measure the resistance in turn between the following terminals:
- between pins 1 and 2;
- between pins 3 and 2.
Resistance value for both measurements (resistance of the primary windings of the ignition coils) equal to 0.4 - 0.6 ohms.
If the value is seriously different from the specified values, replace the ignition coil.
Attention: secondary winding resistance (between the contact for the spark plug and «weight») not measured.
Replacing the ignition coil
Loosen the mounting bolts and remove the ignition coil. О Install a new ignition coil, tighten the bolts to 6 Nm, plug in the side plug.
Put the high voltage wires on the ignition coil, making sure that the fastening tabs click into place.
Attention: The bushings of the high voltage wires on the ignition coil are marked with numbers from 1 to 4. The wires must be installed in the correct order: 1-3-4-2 (1.3L engine: 1-2-4-3). The first cylinder is next to the V-ribbed belt.
1.25/1.4L engine: Install the engine cover and secure it with six bolts.