volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Air Bypass Valve Solenoid, Turbocharger|Testing and Inspection|Page 6598 > < Throttle Position (TP) Sensor G79|Page 6592
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Air Bypass Valve Solenoid: Testing and Inspection

Turbocharger Recirculating Valve N249, Checking 

Special tools, testers and auxiliary items required 

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Multimeter.

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Wiring diagram.

Test requirements 

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The Motronic Engine Control Module (ECM) J623 fuses OK.

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Battery voltage at least 12.5 volts.

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All electrical consumers such as, lights and rear window defroster, switched off.

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On vehicles with automatic transmission, selector lever in position "P" or "N".

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A/C switched off.

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Ground (GND) connections between engine/transmission/chassis OK.

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Ignition switched off.

Procedure 

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Remove the engine cover with air filter.

Checking internal resistance 

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Disconnect the Turbocharger Recirculating Valve N249 electrical harness connector -2-.

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Using a multimeter, check the Turbocharger Recirculating Valve N249 terminals 1 to 2 for resistance.

Air Bypass Valve Solenoid, Turbocharger|Testing and Inspection|Page 6598 > < Throttle Position (TP) Sensor G79|Page 6592