4F9A
4F9A - P17F9Information saved in
GS
Fault code
4F9A - P17F9
Fault text
Ratio monitoring, gearshift 4-2
Fault description
Ratio Monitoring Shift 4-2
Condition for fault identification
Test condition:
Positive torque transfer in D or R
Torque converter turbine speed >0 rpm
Engine speed >400 rpm
Terminal condition: Ignition ON
Voltage condition:
7 ... 16V
Condition for fault memory entry
Symptom counter
Action in service
If fault is passive: Check fluid level according to
specifications and add fluid as indicated. Clear fault memory
and conduct road test under monitored conditions (upshift
and downshift through all gears). If fault code is not
registered, transmission OK
If fault code is entered repeatedly Replace transmission.
Fault effect and breakdown warning
Driver information
Warning light:
E-gearshift: CC-ID420
M-gearshift: CC-ID420
Electr. default mode 4th gear
Service instruction
none