A4 Mk1
Fuel supply system - four-wheel drive
Testing fuel pump relay -J17 and activation - Vehicles with 6-cylinder engine
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A - If the relay does not pick up:
B - If the relay picks up but the fuel pump does not run: Testing voltage supply of fuel pump relay |
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If the LED does not light up:
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Warning!
To prevent damage to the electronic components, switch to the respective measuring range before connecting the measuring cable and observe the test prerequisites.
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=> Current flow diagrams, Electrical fault finding and Fitting locations binder Testing activation of fuel pump Requirements for test:
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If the specification is not obtained:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder If the wiring is OK and no faults are found in the tests up to this point:
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