Test Procedure

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK

Start diagnosis

-- Remove rear seat bench. Refer to the Repair Information.

-- Remove the Fuel Pump Control Module from the retaining clips on the floor sealing cover.

Fig 1: Identifying Fuel Pump Control Module, Retaining Clips & Floor Sealing Cover

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the electrical harness connector -arrow- from the Fuel Pump Control Module.

Fig 2: Identifying Fuel Pump (FP) Control Module J538 Connector

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the multimeter ground lead to terminal -6- of the Fuel Pump Control Module harness connector.

-- Connect the multimeter positive lead to terminal -1- of the Fuel Pump Control Module harness connector.

-- Turn the Ignition key to the ON position.

-- The meter should read within 1 volt of Battery voltage.

-- If voltage is below specification, locate wiring fault in ground or power circuit. Refer to wiring diagram for location.

-- If voltage is OK, connect multimeter positive lead to terminal -3- of the Fuel Pump Control Module harness connector. The ground lead remains on terminal -6-

-- Crank the engine and note voltage displayed on multimeter during crank. Voltage should be within 2.5 volts of battery voltage.

-- If voltage is below specification, locate wiring fault in the power circuit. Refer to wiring diagram for location.

-- If voltage is OK, connect multimeter positive lead to terminal -2- of the Fuel Pump Control Module harness connector. The ground lead remains on terminal -6-

-- Crank the engine and note voltage displayed on multimeter during crank. Voltage should be 3.2 volts (+/-.4)

-- If voltage is below specification, check circuit from Fuel Pump Control Module to ECM for open, short or high resistance and repair as necessary. If no circuit fault is found, replace ECM.

-- If voltage is OK, reconnect the wiring harness to the Fuel Pump control Module.