Diagnostic pump, checking electrically

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 Volkswagen GTI, 2005 Volkswagen Jetta, 2005 Volkswagen GTI, 2004 Volkswagen Jetta, and 2004 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

Remove right rear wheel housing liner, refer to REAR WHEEL-HOUSING LINER .

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

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove 3-pin connector from fuel system Leak Detection Pump (LDP) V144.
Connect Multimeter V.A.G 1526C for resistance measurement between terminals 1 and 3 on Leak Detection Pump (LDP) V144. Specified value: 640 to 720 Ω.
Connect Multimeter V.A.G 1526C for resistance measurement between terminals 2 and 3 on Leak Detection Pump (LDP) V144. Specified value: 12.5 to 19.5Ω.

If specifications are not obtained:

Replace Leak Detection Pump (LDP) V144.
Check DTC memory.
Read readiness code.
If DTC memory was cleared or engine control module disconnected from voltage supply, readiness code must be regenerated.