Test Sequence

WARNING: This page is about a different car, the 2016 Volkswagen Beetle, 2015 Volkswagen Beetle, 2014 Volkswagen Beetle, and 2013 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Follow all safety precautions. Refer to SAFETY PRECAUTIONS .

Follow the guidelines for clean working conditions. Refer to PARKING/AUXILIARY HEATER AND FUEL SYSTEM CLEAN WORKING CONDITIONS .

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

Fig 1: Connecting Evaporative Emissions Tester To Vehicle

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-- Connect the diagnostic cable connector -2- to the Data Link Connector (DLC) inside the driver footwell.

-- Switch the ignition on.

-- Select Output Diagnostic Test Mode for the fuel pump in the Vehicle Diagnostic Tester.

Fuel pump must now accelerate slowly up to maximum RPM.

NOTE:

The output diagnostic test mode checks the fuel pump.

The fuel pump is now activated.

The fuel pump runs very quietly.

If the output diagnostic test mode is performed several times after another it is necessary to briefly start the motor before repeating the output diagnostic test mode.

-- Turn off the ignition.

If Fuel Pump Does Not Start

Fig 2: Identifying Right Cover

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-- Remove the bench seat. Refer to REMOVAL AND INSTALLATION .

-- Unclip the cover -1- at the tabs -arrows- using the Trim Removal Wedge 3409.

-- Pull on the connector -arrow- without pressing the release to make sure the connection is secure.

Fig 3: Fuel Pump Control Module Connector

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-- Repeat the fuel pump functionality test if the connector was not connected correctly. Refer to FUEL PUMPS, CHECKING FUNCTION AND POWER SUPPLY .

Fuel Pump Runs without Function

-- Disconnect the connector -arrow-.

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

-- Connect the Vehicle Diagnostic Tester - Test Adapter - 5 Pin VAS 5565 to the connector and to the fuel delivery unit.

Fig 4: Connecting Multi-Meter To Terminals 1 And 5 Of Test Instrument Adapter/DSO (5-Pin) VAS 5565

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-- Connect an Analog/Digital Multimeter to the wires -1 and 5- on the Vehicle Diagnostic Tester - Test Adapter - 5 Pin VAS 5565.

-- Repeat the fuel pump function test. Refer to FUEL PUMPS, CHECKING FUNCTION AND POWER SUPPLY .

Target value: approximately battery voltage.

Voltage Supply Not OK

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

Voltage Supply OK

-- Remove the fuel lines -1 and 2- from the flange. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, SEPARATING .

Fig 5: Fuel Lines At Flange

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Vehicles with Parking Heater

-- If the vehicle has an auxiliary heater, then disconnect the connector and the fuel line from the Metering Pump -V54-.

Continuation for All Vehicles

Fig 6: Identifying Locking Ring And Wrench T10202

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-- Fuel Tank, Draining. Refer to FUEL TANK, DRAINING .

-- Remove the locking ring using the Wrench - Fuel Sending Unit T10202.

-- Lift up the cover -3- for the fuel delivery unit.

Fig 7: Identifying Fuel Delivery Unit Flange

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

-- Inspect the terminal for damages

If An Open Circuit Is Not Detected

-- The fuel pump is faulty. Replace the fuel delivery unit FUEL DELIVERY UNIT .

Tightening Specifications

Refer to OVERVIEW - FUEL DELIVERY UNIT/FUEL LEVEL SENSOR