audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Leak Detection Pump (LDP) -V144-, Checking|Page 5270 > < Leak Detection Pump (LDP) -V144-, Checking
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Release and disconnect harness connector.

Checking internal resistance

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Connect multimeter for resistance measurement as follows.

Leak Detection Pump

Specified value

(LDP) -V144- Terminal

1 + 3 

640 to 720 ohm

2 + 3 

15 to 17 Ohms

If specified values are not obtained:

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Replace Leak Detection Pump (LDP) -V144- item 9,

If specified values are obtained:

Checking voltage supply

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Connect multimeter for voltage measurement as follows:

Harness connector

Measure to

Terminal

3

Engine Ground (GND)

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Operate starter briefly.
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Specified value: approx. battery voltage

Leak Detection Pump (LDP) -V144-, Checking|Page 5270 > < Leak Detection Pump (LDP) -V144-, Checking