audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 6660 > < LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 6658
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Disconnect connector from LDP.

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Connect voltage tester VAG1527 B as follows:

Connector terminal

Measure

3

Engine Ground (GND)

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Briefly operate starter motor. 

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LED must light up.

If LED does not light up:

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Check electrical wiring from terminal 3 via fuse for fuel pump relay for open circuit.

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Repair wiring as necessary.

If wiring is OK:

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Check fuel pump relay:

Checking output wiring (vehicles with mechanical throttle activator)

LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 6660 > < LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 6658