volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Exhaust Bypass Valve, Turbocharger > < Air Bypass Valve Solenoid, Turbocharger|Testing and Inspection|Page 7949
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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 Motronic Engine Control Module (ECM) J623.

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Install the engine cover with air filter..

Final procedures 
After repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. 
2. If necessary, erase the DTC memory. 
3. If the DTC memory was erased, generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive

Cycles and Readiness Codes

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End of diagnosis.

Exhaust Bypass Valve, Turbocharger > < Air Bypass Valve Solenoid, Turbocharger|Testing and Inspection|Page 7949