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- Test continuity of wiring from socket 1 to fuel pump relay via fuse. Rectify open circuit if necessary.
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
- If wiring is OK, test fuel pump relay
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If the diode test lamp lights up, test activation
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Testing activation of ACF solenoid valve
- -> Connect diode test lamp V.A.G 1527 between sockets 1 (positive) and 2 of plug connector.
- Start final control diagnosis and select solenoid valve for activated charcoal filter -N80
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The diode test lamp should flash.
If the diode test lamp does not flash or lights up continuously:
- Connect test box V.A.G 1598/31 to wiring harness for engine control unit. Do not connect to the engine
control unit itself.
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If the diode test lamp lights up continuously:
Audi A8 1994 ➤
Motronic injection and ignition system (6-cylinder) - Edition 02.1999
74
24 - Mixture preparation, Injection
