volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 1277 > < With Manufacturer's Scan Tool|Page 1275
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See: Powertrain Management/Fuel Delivery and Air Induction/Service Precautions/Technician Safety Information

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Check the control module DTC memory again.

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Repeat Engine idle speed check.

If the specifications are not obtained again:

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Check Throttle Valve Control Module -J338- Refer under "Powertrain Management/Computers and Control Systems/Electronic Throttle Control
Module".  

See: Powertrain Management/Computers and Control Systems/Electronic Throttle Control Module/Testing and Inspection

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Check operating condition of engine.  

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Manufacturer's Scan
Tool/Read Measuring Value Blocks (Function 08)/Engine Operating Mode, Checking

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Check intake air system for leaks (unmetered air).  

See: Powertrain Management/Fuel Delivery and Air Induction/Testing and Inspection

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Check signals from / to air conditioning system.  

See: Powertrain Management/Computers and Control Systems/A/C Signal/Testing and Inspection

With Manufacturer's Scan Tool|Page 1277 > < With Manufacturer's Scan Tool|Page 1275