volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Generic Scan Tool|Page 5252 > < Diagram Information and Instructions|Page 5249
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Leak Detection Pump: Testing and Inspection
With Generic Scan Tool

Leak detection pump (LDP), checking

Recommended special tools and equipment

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V.A.G 1526 multimeter or V.A.G 1715 multimeter

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V.A.G 1594 Connector test set

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Wiring diagram

Test requirements

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The respective fuses of Leak detection pump (LDP) -V144- must be OK:

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Ignition switched off.

Test sequence

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Remove wheelhousing liner, rear left.

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Disconnect 3-pin connector of Leak detection pump (LDP) -V144- (arrow).

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Measure resistance between terminals 1 + 3 of diagnostic pump.
Specified value: 640 to 720 Ohms

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Measure resistance between terminals 2 + 3 of diagnostic pump.

With Generic Scan Tool|Page 5252 > < Diagram Information and Instructions|Page 5249