A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
Turbo Boost Sensor: Testing and Inspection
Charge Air Pressure Sensor, Checking
‹› Use only gold-plated terminals when servicing terminals in harness connector of Charge Air Pressure Sensor (G31).
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› The Engine Control Module (ECM) ( J623) fuses OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› On vehicles with automatic transmission, selector lever in 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 => [ General Diagnosis ] See: Computers and Control Systems/Testing
and Inspection/Initial Inspection and Diagnostic Overview/General Diagnosis.
Start diagnosis
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Remove engine cover - arrows -.
Test sequence
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Disconnect the electrical harness connector - 2 - from the Charge Air Pressure Sensor (G31).