A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
Specified value: 1.5 ohms max.
If the specification was not obtained:
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Check the wiring for a open circuit, short circuit to each other, Battery (+), or 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:
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Replace the Charge Air Pressure Sensor (G31).
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Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Diagnostic Modes/Diagnostic Mode 04 - Erase DTC Memory.
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Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes/Diagnostic Mode 04 - Erase DTC Memory.
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End diagnosis.
If the DTC does return and no malfunction is detected in the wiring and the voltage supply was not OK:
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Replace the Engine Control Module (ECM) (J623 ). Refer to => [ Engine Control Module, Replacing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair.
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Assembly is performed in the reverse of the removal.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. => [ Diagnostic Mode 03 - Read DTC Memory ] See: Computers and Control Systems/Testing and Inspection/Scan Tool
Testing and Procedures/Diagnostic Modes/Diagnostic Mode 03 - Read DTC Memory.