A6 Quattro Sedan V6-3.2L (BKH) (2005)
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Using a Multimeter , check the Leak Detection Pump (LDP) (V144) for resistance as follows:
If 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 through the the Engine Control Module (ECM) (J623).
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Using a Multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical harness connector terminal 3 for voltage.
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Operate the starter briefly.
Specified value: battery voltage.
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Switch the ignition off.
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Using a Multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical harness connector terminal 3 to the Engine Control Module (ECM)