audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Leak Detection Pump, Evaporative System|Testing and Inspection|Page 3373 > < Leak Detection Pump, Evaporative System|Testing and Inspection
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If any of the specifications were not obtained:

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

If the specified values were obtained:

Checking voltage supply

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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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Check the wiring connection from the Leak Detection Pump (LDP) (-V144-) electrical harness connector terminal 3 to the Engine Component
Power Supply Relay (J757) terminal 2/87 for an open circuit or short to ground (GND).

Leak Detection Pump, Evaporative System|Testing and Inspection|Page 3373 > < Leak Detection Pump, Evaporative System|Testing and Inspection