Ignition coil — removal, inspection and installation (Opel Astra F)

All engines except 1.6L engine with multi-point fuel injection.

Removal

The coil is mounted on the left side of the engine compartment, in front of the suspension strut.

Disconnect the negative battery terminal.

Disconnect the high voltage wire from the coil (Fig. 5.15).



Disconnect the LV wires from the coil and/or the coil plug (Fig. 5.17).



If necessary, disconnect the plug from the ignition amplifier module located under the coil (Fig. 5.18).



Remove the two coil bolts and remove the coil together with the power steering module and mounting plate where required (Fig. 5.19). On some models equipped with power steering, one of the coil bolts also secures the power steering fluid reservoir bracket. Also, note the location of the coil interference suppressor, which may be secured with one of the screws.





If necessary, disconnect the coil from the amplifier module mounting plate.

On models with a cylindrical coil, you can remove the clamp from the coil by unscrewing its nut (Fig. 5.16).

Examination

Connect an ohmmeter between the two LV terminals and check the primary winding for continuity. Connect an ohmmeter between the HV terminal and the LV terminal and check the secondary winding for continuity. If there is a defect, the coil should be replaced.

Using an ohmmeter or tester, determine that there is no connection between the HV terminal and the coil body. If there is, the coil should be replaced.

Installation

Installation is carried out in the reverse order of removal, but make sure that (if required) the coil interference suppressor is in place before installing its bolts. Check that all wires are connected correctly and securely.

1.6L engine with multi-point fuel injection

Removal

The ignition coil is mounted on the left side of the camshaft housing, in the place where the ignition distributor is usually located.

Disconnect the negative battery terminal.

Disconnect the high voltage wires from the coil, marking their location. Remember that the cylinder numbers are marked on the ignition coil housing near each contact (Fig. 5.20).

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Disconnect the coil plug (Fig. 5.21).



Remove the three Torx head screws and remove the coil from its mounting plate (Fig. 5.22).

Examination

The design of the coil requires testing with the appropriate equipment of the company.

Installation

Installation is carried out in the reverse order of removal.