Current Draw, Checking

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-- Remove the rear bench seat. Refer to Removal and Installation .

-- Remove the cover -1- from the fuel delivery unit. The arrow -2- points in the direction of travel.

Fig 1: Removing Cover From Fuel Delivery Unit

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- First, pull on the connector -arrow- without pressing the retainer to make sure it connected securely. If the connector was not connected correctly, it could cause a fault.

Fig 2: Fuel Pump Control Module Connector

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector.

-- Check the contacts on the connector and the fuel delivery unit for damage.

-- Install the test instrument adapter/DSO (5-pin) VAS 5565 between the connectors on the fuel delivery unit and cover.

Fig 3: Connecting Current Clamp To Red Wire On Test Instrument Adapter/DSO (5-Pin) VAS 5565

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the current clamp -A- to the red wire of the test instrument adapter/DSO (5-pin)VAS 5565 with the word "current clamp" on it.

-- Start the engine and run at idle speed.

-- Measure the current draw of the fuel pump.

Specified value: Max. 9 amps.

NOTE:

If the malfunction in the fuel system is sporadic, the test can also be performed during a road test, but a second person is required.

If the current draw is exceeded:

-- The fuel pump is faulty, replace the fuel delivery unit. Refer to FUEL DELIVERY UNIT .