Resistance, Checking

WARNING: This page is about a different car, the 2006 Audi A8, 2005 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating 3-Pin Connector At Fuel System Leak Detection Pump V144

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect multimeter for resistance measurement as follows.

Leak detection pump (LDP) V144 Terminal	Specified value
1 + 3	640 to 720 Ω
2 + 3	15 to 17 Ω

If specified values are not obtained:

Replace Leak detection pump (LDP) V144 → Leak Detection Pump, Removing and Installing .

If specified values are obtained:

Check voltage supply of Leak Detection Pump (LDP).