Test Sequence:

-- Follow all safety precautions. Refer to SAFETY PRECAUTIONS .

-- Follow the guidelines for clean working conditions. Refer to FUEL SYSTEM GUIDELINES FOR CLEAN WORKING CONDITIONS .

-- Connect the Vehicle Diagnostic Tester -1- as follows:

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-- Connect the diagnostic cable connector -2- to the diagnostic connection inside the driver footwell.

-- Switch the ignition on.

-- Select the fuel pump output diagnostic test mode in OBD.

The fuel pump must run.

-- Switch off the ignition.

If the Fuel Pump Does Not Start: 

-- Remove the bench seat. Refer to REAR SEATS .

-- Unclip the cover -1- at the tabs in direction of -arrows- using the :3409  .

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-- Pull on the connector -1- without pressing the release to make sure the locking mechanism is secure. Repeat the fuel pump function test if the connector was not connected correctly.

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-- Remove the connector -1-.

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

-- Attach the :VAS5565  to the connector and to the fuel delivery unit.

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-- Connect the analog/digital multimeter to the wires -1 and 5- in the :VAS5565  .

-- Re-initiate the output diagnostic test mode and measure the voltage on the fuel pump.

• Specified value: approximately 2 Volts less than battery voltage.

If the Specified Value Is Not Obtained: 

-- Locate and repair the open circuit according to the wiring diagram. Refer to apprpriate Wiring Diagram.

If the Specified Value Is Obtained:

-- Remove the fuel delivery unit. Refer to FUEL DELIVERY UNIT/FUEL LEVEL SENSOR, REMOVING AND INSTALLING .

-- Check if the wiring between the flange and fuel pump is connected.

-- Inspect the contacts for damage.

If No Open Circuits Are Found:

-- If the fuel pump is faulty, replace the fuel delivery unit. Refer to FUEL DELIVERY UNIT/FUEL LEVEL SENSOR, REMOVING AND INSTALLING .