A6 Quattro Sedan V8-4.2L (BVJ) (2007)
Checking internal resistance
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Using a Multimeter, check the Leak Detection Pump (LDP) (V144) for resistance as follows:
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.