audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Turbocharger Recirculating Valve, Checking|Page 3935 > < Turbocharger Recirculating Valve, Checking|Page 3933
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Air Bypass Valve: Testing and Inspection
Wastegate Bypass Regulator Valve, Checking

Wastegate Bypass Regulator Valve, Checking

Special tools, testers and auxiliary items required

‹› Multimeter.

‹› Wiring diagram.

Test requirements

‹› Fuse (S345) OK.

‹› The Engine Component Power Supply Relay (J757) OK.

‹› The ignition switched off.

‹› Voltage for the Wastegate Bypass Regulator Valve ( N75) is supplied by the Engine Component Power Supply Relay (J757).

Test procedure

-

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

-

Remove engine cover - arrows -.

Checking internal resistance

-

Disconnect electrical harness connector - 2 - at Wastegate Bypass Regulator Valve (N75).

Turbocharger Recirculating Valve, Checking|Page 3935 > < Turbocharger Recirculating Valve, Checking|Page 3933