Porsche 928 Workshop Manual page 107

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l
928
Automatic Transmission - Gears, Regulation
38
Fault:
No kickdown from 3rd to 2nd
shifting points in partial load range too low
Cause/remedy
check gas and control pressure cable settings
Fault:
No kickdown downshifts
Cause/remedy:
l.Check fuse for power supply to solenoid
valve.
Z.Remove solenoid valve.
With valve removed, connect to power
supply and check operation.
Fit replacement if necessary.
3.Check that control pressure cable is not disconnected, broken or
maladjusted.
4.Check that kickdown control slide moves freely in housing,
in-
stall replacement housing if necessary.
Fault:
No brake shifts (4-3 and 3-2)
l.Adjust control pressure cable.
Z.Check vacuum lines and connections for leaks.
3.Release brake shift plunger,
housing.
if necessary separate shift slider
a
Printed in Germany - XII, 1986
Faults and Remedies
38 - 117