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Home >> Volkswagen >> 1996 >> Passat GLS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Engine Controls - Basic Testing) >> Fuel System >> Transfer Pump Check >> Transfer Pump Fuel Volume Check
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Transfer Pump Fuel Volume Check

WARNING: This page is about a different car, the 1995 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. To check transfer pump (in tank), remove rear seat. Remove fuel sending unit access cover. Disconnect ignition coil secondary wire and connect to ground.
  2. With transmission in Neutral, crank engine for 3-4 seconds. While starter is turning and for a few seconds afterward, an audible sound should be heard at the pump. If sound is not heard, go to next step. If sound is heard, go to step 5).
  3. Remove fuel pump relay from relay panel. Activate fuel pumps using Remote Control (VAG 1348/3A). If pump does not operate, remove transfer pump wire harness connector. See Fig 1.
  4. Using test light, check voltage between Brown wire and Red/Yellow wire. If voltage is present, replace transfer pump. If voltage is not present, repair open or short circuit in wiring.
  5. Remove fuel pump relay jumper wire. Disconnect and plug transfer pump output hose. Attach a hose to pump outlet connector, and place other end of hose in a graduated container. Activate fuel pump for 10 seconds.
  6. Minimum fuel flow should be 10 ounces (.3 liter). If fuel flow is low, check fuel tank filter for restriction. If fuel tank filter is okay, replace transfer pump.
Fig 1: Checking Transfer Pump Fuel Volume (Typical)
G95H30988Courtesy of VOLKSWAGEN UNITED STATES, INC.
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