Audi A8 1994 Service Manual page 102

Audi A8 1994 ➤
Motronic injection and ignition system (6-cylinder) - Edition 02.1999
◆ The secondary resistance must first be measured between the spark plug connectors for the relevant cyl‐
inders, without disconnecting the ignition cables from the ignition coils. This measurement also includes the
interference-suppression resistance in the ignition cables.
◆ Fitting location => Page
- Unplug 5-pin connector from ignition coils.
Testing ignition coils -N, -N128 and -N158
- Disconnect ignition cables from spark plugs.
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- -> Connect hand-held multimeter V.A.G 1526 between the two spark plug connectors for the ignition circuit
which is to be tested.
Specification: 16 ... 27 kωfor each measurement
If specifications are not obtained:
- Disconnect the ignition cables from the ignition coils and then measure the resistance in the cables and the
coils separately.
- -> Connect hand-held multimeter V.A.G 1526 between the two ignition cable connections on the ignition coil
which is to be tested.
Specification: 8.0 ... 14.0 kωfor each measurement
- Connect hand-held multimeter V.A.G 1526 between the two connections on the ignition cable which is to
be tested.
Specification: 3.0 ... 7.0 kωfor each measurement
If specifications are still not obtained:
- Renew defective components.
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28 - Ignition system
23 .