TT Quattro Coupe V6-3.2L (CBRA) (2008)
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Start the engine and let it run at idle.
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Using a multimeter, check the Mass Air Flow (MAF) Sensor (G70) electrical harness connector terminal 2 to engine Ground (GND).
Specified value: battery voltage.
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Switch the ignition off.
If specified value was not obtained:
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Check the Mass Air Flow (MAF) Sensor (G70) electrical harness connector terminal 2 to the Fuel Pump (FP) 2 Relay (J49) terminal 2/87 for an
open circuit, a short circuit to each other, Battery (+), and Ground (GND).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
Checking electrical circuit
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 Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Engine Control Module/Testing and