volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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One particular shift is "hard or jolting” > < Shifts occur sporadically or not at all

Golf Mk4

All shifts are “hard or jolting”
   
All shifts are “hard or jolting”
Possible causes of faultRectifying fault
l  Only for gearboxes “01M, 01P” from January 1995;
Connectors for vehicle speed sender -G68- and gearbox speed sender -G38- interchanged.
In this case, when fault memory is read, “Sender for gearbox speed -G38-/implausible signal” will be displayed.
–  Perform basic setting with engine switched off → Chapter.
–  Interchange connectors.
–  Carry out test drive.
l  Only gearbox “001”
No signal from gearbox oil temperature sender -G93- or Sender defective
–  Check wiring and connections according to current flow diagram and repair if necessary → Current flow diagrams, Electrical fault finding and Fitting locations.
–  Check gearbox oil temperature sender -G93- and renew if necessary.
Throttle valve potentiometer signal not detected by automatic gearbox control unit -J217-.
–  Check signal from throttle valve potentiometer.
–  To do this, connect a Volkswagen tester → Chapter.
–  Perform → self-diagnosis of engine control unit.
–  Check wiring and connections according to current flow diagram and repair if necessary → Current flow diagrams, Electrical fault finding and Fitting locations.
Connection to gearbox damaged or loose (connection: conductor strip input wire connector in vehicle wiring harness)
t  Contacts dirty or corroded
t  Connector contact in connector housing damaged (not engaged)
–  Check wiring and connections according to current flow diagram and repair if necessary → Current flow diagrams, Electrical fault finding and Fitting locations.
Short circuit between valve cables and conductor strip or on cable guide rail
–  Renew valve wiring and conductor strip → Chapter.
Wrong control unit installed or control unit defective
–  Read out control unit identification.
–  To do this, connect a Volkswagen tester → Chapter.
–  Select control unit according to → Electronic parts catalogue “ETKA” and renew.
Manual selector valve or spool valves in valve body defective
–  Renew valve body → Chapter.

   

One particular shift is "hard or jolting” > < Shifts occur sporadically or not at all