GLI L4-2.0L Turbo (CCTA) (2008)
Air Bypass Valve Solenoid: Testing and Inspection
Turbocharger Recirculating Valve, 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.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check
Start diagnosis
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Lift the vehicle on a hoist to access the turbocharger recirculating valve connector.
Checking internal resistance
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Disconnect the Turbocharger Recirculating Valve N249 electrical harness connector - 2 -.