A3 Mk1
Repairing the Motronic fuel injection system
Checking fuel pump relay and actuation
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The fuel pump relay should pick up (can be felt and heard) and the diode test lamp should light up. If the diode test lamp does not light, although the fuel pump relay picks up:
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=> Current Flow Diagrams, Electrical Fault Finding and Fitting Locations binder |
Checking actuation
Note: Diode test lamps with a low current consumption do not go out completely but continue to glow faintly until the starter is operated. |
If the diode test lamp does not light up, check the wiring as follows:
=> Current Flow Diagrams, Electrical Fault Finding and Fitting Locations binder
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