199001813 - C012 REVERSE GEAR CAN SOMETIMES NOT BE ENGAGED (Robotized gearbox)

Test results
1ERRORS IN AUTOMATED GEARBOX CONTROL UNIT CHECKAll OKProblems encounteredOperation
Check that there are no errors in the automated gearbox control unit. More specifically:- Lever switch error (any of the 4 or ECO/Normal switch)- Gear selection Solenoid brake errorMove on to Step 4One or more errors on the list are presentMove on to Step 2
2CHECKS ON FAULTS ENCOUNTEREDAll OKProblems encounteredOperation
Check the faults, carrying out    See Test 2127OI WHAT TO DO DEPENDING ON THE ERROR PRESENT IN THE ROBOTIZED GEARBOX CONTROL UNITMove on to Step 3Fault at the connections (Gear selection solenoid error)Restore/replace the wiring    See E7051 ROBOTIZED GEARBOX
The displayed state is not correct (Lever switch error - Check lever)Check connections, wiring continuity and gear lever.
The change of state does not take place and/or the word ECO is not displayed (Lever switch error - Check ECO button)Check the button and the wiring
3REPLACEMENT OF GEAR SELECTION SOLENOIDAll OKProblems encounteredOperation
If no connection / wiring faults are detected and the gear selection solenoid is in error, replace it    Op. 2127C54 GEAR SELECTION SOLENOIDS - R.R. and check it is working correctlyMove on to Step 4
4GEAR LEVER CHECKAll OKProblems encounteredOperation
1. Check that the gear lever is working properly, carrying out    See Test 2127OL GEAR LEVER CHECKMove on to Step 5The displayed lever states are not correctCheck the wiring and the gear switches/levers. Restore/replace the part that is not working
The state does not change and/or the word AUTO is not displayedCheck the switch and the wiring. Restore/replace the part that is not working
5FLUID LEVEL CHECKAll OKProblems encounteredOperation
Check the fluid level, carrying out    See Test 2127OB FLUID LEVEL CHECKMove on to Step 7Level lower than Max markTop up and move on to Step 6
Level above Max markBring to Max level and move on to step 7
6FLUID LEAKS CHECKAll OKProblems encounteredOperation
Check there are no fluid leaks, carrying out    See Test 2127OC FLUID LEAKS CHECKMove on to Step 7Fluid leaks detected in the clutch assemblyCarry out the procedure for bleeding the clutch with Examiner in active diagnosis
Fluid leaks detected in other parts of the hydraulic assemblyRepair/replace the parts involved, top up the oil and check the seal
7FLUID PRESSURE CHECKAll OKProblems encounteredOperation
Check the fluid pressure, carrying out    See Test 2127OD FLUID PRESSURE CHECKMove on to Step 10Pressure < 40 barMove on to Step 8
8PRESSURE SENSOR CHECKAll OKProblems encounteredOperation
Check that the sensor is working properly, carrying out    See T OIL PRESSURE SENSOR OPERATION CHECKMove on to Step 9Pressure sensor not workingReplace the sensor    Op. 2127E50 HYDRAULIC SELECTION GEARBOX CIRCUIT PRESSURE SENSOR - R.R.
9ELECTRIC PUMP OPERATION CHECKAll OKProblems encounteredOperation
Check that the electric pump is working properly by carrying out    See Test 2127OE ELECTRIC PUMP OPERATION CHECKMove on to Step 10Voltage less than 11 VRestore correct battery voltage.
It is not possible to shift gears using the leverActivate the "bleed clutch" function from Examiner Plus or Smart to activate the electric pump.
10CHECK THAT THE CLUTCH IS NOT DRIVENAll OKProblems encounteredOperation
Check that the clutch is not driven, carrying out    See Test 2127OK CLUTCH DRIVE CHECKMove on to Step 11The clutch is drivenReplace the clutch mechanism    Op. 1810A28 CLUTCH - R R FOR MANUAL GEARBOX WITH HYDRAULIC SELECTION VERSIONS
11CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsContact technical service for further information on the problem