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Volkswagen Workshop Service and Repair Manuals

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Gearbox does not downshift for kickdown > < Hard shifts immediately after repair

Golf Mk4

Gearbox downshifts at constant vehicle speed without apparent reason
   
Gearbox downshifts at constant vehicle speed without apparent reason
Possible causes of faultRectifying fault
→ ATF is insufficiently cooled and gearbox downshifts as a safety function.
–  Check why → ATF temperature rises about its specified limit. Check for additional components or changes to vehicle which may affect the cooling. The subsequent installation of a trailer hitch without the necessary change of the radiator fan can lead to cooling problems.
Engine speed signal is not detected by automatic gearbox control unit -J217-.
–  Connect a Volkswagen tester → Chapter and check if the signal is detected.
–  Check wiring and connections according to current flow diagram and repair if necessary → Current flow diagrams, Electrical fault finding and Fitting locations.
–  Perform → self-diagnosis of engine control unit.
–  To do this, connect a Volkswagen tester → Chapter.

   

Gearbox does not downshift for kickdown > < Hard shifts immediately after repair