199001815 - C015 THE GEARBOX REMAINS STUCK IN ONE GEAR DURING AUTO OPERATION (Robotized gearbox)

Whilst stopping, the vehicle has changed down to first gear and then has not allowed any gear to be engaged

		Test results
1	ERRORS IN AUTOMATED GEARBOX CONTROL UNIT CHECK	All OK	Problems encountered	Operation
	Check that there are no errors in the automated gearbox control unit.More specifically:- Brake switch error- Clutch sensor error- Microprocessor 2 error- Even gears engagement error- Odd gears engagement error- Clutch solenoid current error- Gear selection solenoid error- Control unit earths error- Load relay error NOTE: When the brake switch is in error the recovery considers the brake pedal as being constantly pressed when the the engine is running; this means that only down gear changes can take place in automatic mode	Move on to Step 5	One or more errors on the list are present.	Move on to Step 2
2	CHECKS ON FAULTS ENCOUNTERED	All OK	Problems encountered	Operation
	Check the faults, carrying out the    See Test 2127OI WHAT TO DO DEPENDING ON THE ERROR PRESENT IN THE ROBOTIZED GEARBOX CONTROL UNIT	Move on to Step 3	Faults encountered (Brake switch)	Restore correct operation.
			Fault at the connections (Clutch sensor, Even or uneven gears engagement, Clutch solenoid current, Gear selection solenoid error, Control unit earths error and/or Load relay error)	Restore/replace the wiring    See E7051 ROBOTIZED GEARBOX
			The Automated Gearbox has been replaced (Microprocessor 2 error)	Move on to Step 4
			The active diagnosis of a solenoid is inconclusive and no wiring errors are detected (Even gears or odd gears engagement and/or Clutch solenoid)	Move on to Step 3
3	AFTER THE ACTIVE DIAGNOSIS ON THE SOLENOID	All OK	Problems encountered	Operation
	- If this step has been reached during the active diagnosis of the clutch solenoid, replace it    Op. 2127C56 CLUTCH CONTROL SOLENOID - R.R. and check it is working correctly by carrying out a gear change.- If this step has been reached during the active diagnosis of the engagement solenoid, replace it    Op. 2127C52 ODD AND EVEN GEAR ENGAGEMENT SOLENOIDS - R.R. and check it is working correctly.	Move on to Step 4
4	REPLACEMENT OF SOLENOID	All OK	Problems encountered	Operation
	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 correctly.	Move on to Step 5
5	FLUID LEVEL CHECK	All OK	Problems encountered	Operation
	Check the fluid level, carrying out the    See Test 2127OB FLUID LEVEL CHECK	Move on to Step 7	Level lower than Max mark	Top up and move on to Step 6
			Level above Max mark	Bring to Max level and move on to step 7
6	FLUID LEAKS CHECK	All OK	Problems encountered	Operation
	Check there are no fluid leaks, carrying out the    See Test 2127OC FLUID LEAKS CHECK	Move on to Step 7	Fluid leaks detected	Repair/replace the parts involved, top up the fluid with the correct amount.
7	FLUID PRESSURE CHECK	All OK	Problems encountered	Operation
	Check the fluid pressure, carrying out    See Test 2127OD FLUID PRESSURE CHECK	Move on to Step 10	Pressure < 40 bar	Move on to Step 8
8	PRESSURE SENSOR CHECK	All OK	Problems encountered	Operation
	Check that the sensor is working properly by carrying out the    See T OIL PRESSURE SENSOR OPERATION CHECK	Move on to Step 9	Pressure sensor not working	Replace the sensor    Op. 2127E50 HYDRAULIC SELECTION GEARBOX CIRCUIT PRESSURE SENSOR - R.R.
9	ELECTRIC PUMP OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the electric pump is working properly by carrying out    See Test 2127OE ELECTRIC PUMP OPERATION CHECK	Move on to Step 10	Voltage less than 11 V.1.	Restore correct battery voltage.
			It is not possible to shift gears using the lever.	Activate the "clutch bleeding" service using the Examiner Plus or Smart to activate the electric pump.
10	CHECK THE CLUTCH PLATE SPEED SENSOR	All OK	Problems encountered	Operation
	Check the clutch plate speed signal, carrying out the    See Test 2127OA CHECK ON OPERATION OF CLUTCH DISC SPEED SENSOR THROUGH ROAD TEST	Move on to Step 12	Problems are encountered at the sensor signal.	Move on to Step 11
11	CHECK THE CONDITION OF CONNECTIONS	All OK	Problems encountered	Operation
	Check the condition of the connections and wiring for the clutch plate speed sensor. Remember that this sensor is located on the gearbox bell-housing near the reversing lights sensor	Move on to Step 12	Faults found	Restore/replace the part that is not working.
12	REPLACEMENT OF THE CLUTCH PLATE SPEED SENSOR	All OK	Problems encountered	Operation
	Replace the clutch plate speed sensor    Op. 2127E52 HYDRAULIC SELECTION GEARBOX INPUT SHAFT SPEED SENSOR - R.R.	Move on to Step 13
13	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present.	End of diagnosis	The fault persists	Contact technical service for further information on the problem.