A4 Quattro Wagon L4-2.0L Turbo (CAEB) (2009)
Test sequence
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Disconnect the Charge Air Pressure Sensor (G31 ) electrical harness connector - arrow -.
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Start engine and let it run at idle.
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Using a multimeter, check the Charge Air Pressure Sensor (G31) electrical harness connector terminals 1 to 3 for voltage.
Specified value: min. 4.5 V