S4 V8-4.2L (BHF) (2004)
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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