A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
Specified value: 1.5 ohms Max.
If the specified value was not obtained:
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Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connection for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and the resistance was not OK:
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Replace the faulty Knock Sensor (KS) 1 (G61)/Knock Sensor (KS) 2 (G66). Refer to Fuel Injection and Ignition Repair Information.
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Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: 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 => [ Readiness Code ] See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes.
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End of diagnosis.
If the DTC does return and no malfunction is detected in the wiring and voltage supply was not OK:
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Replace the Engine Control Module (ECM) (J623 ). Refer to => [ Engine Control Module, Replacing ] See: Engine Control Module/Service and
Repair.
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Assembly is performed in the reverse of the removal.
Final procedures