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Home >> Audi >> 2001 >> S8 >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (On Board Diagnostic (OBD) - 4.2L V8 5V - Art, Awn) >> On Board Diagnostic (OBD) >> Output Diagnostic Test Mode (DTM) >> Output DTM for engine code: AWN >> Actuating Leak Detection Pump (LDP) -V144-

Actuating Leak Detection Pump (LDP) -V144-

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Indicated on display

Fig 1: VAS 1551 Scan Tool - Actuating Leak Detection Pump (AWN)
G03614032Courtesy of AUDI OF AMERICA, INC.

The change over valve in the LDP is activated for approximately 1 minute (clicks), unless the -> button pressed to switch to the next actuator.

NOTE: The clicking can be heard by listening in the area of the left rear wheel housing.

If valve is not actuated (does not click). See LEAK DETECTION PUMP (LDP) -V144-, CHECKING .