Checking internal resistance

• Connect hand multimeter V.A.G 1526 A or V.A.G 1526 B for resistance measurement as follows.

If specifications are not obtained:

• Replace Leak Detection Pump (LDP) V144 → Leak Detection Pump (LDP) V144 , removing and installing .

If specified values are achieved:

• Check voltage supply of leak detection pump Checking voltage supply .

Fig 1: Identifying 3-Pin Connector Terminals 1 & 3

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