New Beetle L4-1.9L DSL Turbo (BEW) (2006)
Fuel Inlet Metering Valve Sensor: Testing and Inspection
Modulating Piston Displacement Sensor and Quantity Adjuster, Checking
The modulating piston displacement sensor provides the ECM with information on quantity adjuster position, and the ECM then calculates the
required amount of fuel for injection.
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› The Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) (J248) fuses OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check.
Start diagnosis
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Disconnect the Diesel Fuel Injection Pump electrical harness connector.
Checking internal resistance
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Using a multimeter, check the Diesel Fuel Injection Pump terminals 1 to 2 and 2 to 3 for resistance.
Specified value: 5 to 7 ohms
If the specified value was not obtained:
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Replace the Diesel Fuel Injection Pump.