Car arrived stuck in Reverse gear with the 3 bars showing on the change display & non start.
Code read with Launch:
P202B Gear shift operation had be repeated
P202F The transmission is jammed.
Faults cleared, display now shows R. Any attempt to change out of R causes the 3 bars to return (and the fault codes)
Removed the gear change motor and manually revolved the selector drum to neutral, cleared faults and display now shows N and engine can be started. Any attempt at selecting forward gears causes the 3 bars again and no gear selected.
R can be selected and works correctly, selecting neutral brings up the 3 bars (and fault codes).
So far I have checked:
The gear change motor, works fine in both directions with plenty of power, speed sensors in the motor are connected but haven’t checked their output running.
Gear angle sensor (mounted on the end of the selector drum) replaced.
Clutch actuator, cleaned out crud and lubricated, adjusted position. Clutch disengages ok with no drag.
Wiring to gearbox, no broken wires or damaged insulation.
Gearbox, forward gears are working if the selector drum is turned.
I have found someone with a Star machine to diagnose again in case anything not reported by the Launch but not till the weekend.
I understand the Star can teach the gear positions again maybe this is the answer ?
Any help most great fully received as now pulling my hair out.
Yours,
John F