audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Leak Detection Pump, Checking, Vehicles With MPI Engine|Page 4791 > < Leak Detection Pump, Checking, Vehicles With MPI Engine|Page 4789
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If any of the specifications are not obtained:

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Replace the Leak Detection Pump (LDP) (-V144- ).

If the specified values are obtained:

Checking voltage supply

‹› The voltage for the Leak Detection Pump (LDP) (-V144- ) is supplied by the Engine Component Power Supply Relay (J757).

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Using a Multimeter, check the Leak Detection Pump (LDP) (-V144-)electrical harness connector terminal 3 to Ground (GND) for voltage.

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Operate the starter briefly.

Specified value: battery voltage.

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Switch the ignition off.

If the specified value was not obtained:

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Using a Multimeter, check the Leak Detection Pump (LDP) (-V144-)electrical harness connector terminal 3 to the Engine Component Power
Supply Relay ( J757) terminal 2/87 for resistance.

Leak Detection Pump, Checking, Vehicles With MPI Engine|Page 4791 > < Leak Detection Pump, Checking, Vehicles With MPI Engine|Page 4789