Audi A8 1994 Service Manual page 77

Motronic injection and ignition system (6-cylinder) - Edition 02.1999
Electrical test of solenoid valve 1 for activated charcoal filter -N80
- Unplug connector from ACF valve -N80.
- -> Measure resistance between contacts on valve using hand-held multimeter V.A.G 1526.
Specification: 22...30 ω
If the specification is not attained:
- Renew solenoid valve for activated charcoal filter system -N80.
If the specification is attained:
- Test voltage supply => Page
Testing power supply to solenoid valve
Note:
The ACF valve receives its power supply via the fuel pump relay.
- Test fuse for ACF valve
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
If the fuse is OK:
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- Unplug connector on ACF valve -N80.
- -> Connect diode test lamp V.A.G 1527 between engine earth and socket 1 on the connector.
- Operate starter.
The diode test lamp should light up.
If diode test lamp does not light up:
73 .
5.2 - Testing solenoid valve 1 for activated charcoal filter -N80
Audi A8 1994 ➤
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