audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Fuel Tank, Vehicles With Front Wheel Drive as of 11.04|Page 944 > < Fuel Tank, Vehicles With Front Wheel Drive as of 11.04|Page 942
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Switch off ignition.

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Connect test box V.A.G 1598/42 to wiring harness with adapter cable V.A.G 1598/39-1 or adapter cable V.A.G 1598/39-2; engine control module
(ECM) remains connected. Clamp test box Ground (GND) clip to battery negative terminal.

CAUTION:  To avoid damaging electronic components, set measuring range before connecting test leads and observe all test requirements.

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Check the following wire connection for open circuit and short circuit to Ground (GND) and B+:

Vehicles with 4-cyl. TFSI-engine:

Harness connector Terminal

Test box V.A.G 1598/42Socket

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B 27

Vehicles with 6-cyl. TFSI-engine:

Harness connector Terminal

Test box V.A.G 1598/42Socket

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B 35

Repair wiring open circuit or short circuit according to wiring diagram.

If no malfunctions are detected:

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Replace Fuel Pump (FP) Control Module J538.

Fuel Tank, Vehicles With Front Wheel Drive as of 11.04|Page 944 > < Fuel Tank, Vehicles With Front Wheel Drive as of 11.04|Page 942