Touareg V8-4.2L (BAR) (2007)
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Switch the ignition off.
If the specified values are obtained:
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Replace the Low Fuel Pressure Sensor (G410), note the following:
If the specified values are not obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) (J623). Refer to --> [ Engine Control Module, Replacing ] See: Powertrain
Management/Computers and Control Systems/Engine Control Module/Service and Repair/Engine Control Module, Replacing.
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Using a Multimeter, check the Low Fuel Pressure Sensor (G410) electrical harness connector terminals to the Engine Control Module (ECM)
(J623) electrical harness connector T94 terminals for an open circuit according to the wiring diagram.