Eos (1F7) V6-3.2L (BUB) (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 Motronic Engine Control Module (ECM) Power
Supply Relay (J271) terminal 2/87 for an open circuit.
Specified value: 1.5 ohms max.
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 105 Pin (VAG1598/31).
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 J623, Replacing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair/Engine Control Module J623, Replacing.
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Using a multimeter, check the Mass Air Flow (MAF) Sensor (G70) electrical harness connector terminals to the Engine Control Module (ECM)