C21 THE GEARBOX IS STUCK' - Fiat - STILO - eLearn

3360195 - C21 THE GEARBOX IS STUCK'

It remains stuck in one gear and, when the vehicle stops, the engine cuts out and cannot be started up again or it starts again after a few minutes.Preliminary check: If during engine starting you notice that the starter motor works normally, the problem is caused by other systems (engine management, ABS, fuel pump, etc.). Refer to specific charts.If the starter motor does not turn (after checking its operation and the relevant electrical supply circuit), continue with the next diagnosis chart.

0	OIL LEVEL CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the oil level See Test 2127B OIL LEVEL CHECK	Continue to Step 2	Level below the Max reference	Top up the oil levelContinue to Step 1
	Check the oil level See Test 2127B OIL LEVEL CHECK	Continue to Step 2	Level above the Max reference	Reduce to Max levelContinue to Step 2
1	CHECK FOR OIL LEAKS	All OK	Problems met	Operation
	Check that there are no oil leaks See Test 2127C CHECK FOR FLUID LEAKS	Continue to Step 2	Oil leaks detected	Replace/repair the relevant parts, top up the oil levelContinue to Step 1
2	OIL PRESSURE CHECK	All OK	Problems met	Operation
	Check the oil pressure See Test 2127D OIL PRESSURE CHECK	Continue to Step 4	Pressure < 40 bar	Continue to Step 3
3	CHECK THE PUMP OPERATION	All OK	Problems met	Operation
	Check that the pump is working properly See Test 2127E ELECTRIC PUMP OPERATION CHECK	Continue to Step 4	Voltage below 11 V	Check the batteryContinue to Step 3
		Continue to Step 4	It is not possible to make gear changes from the lever	Activate the 'clutch bleed' service from the Examiner Plus or Smart to activate the pumpContinue to Step 3
4	CONTROL UNIT ERRORS CHECK	All OK	Problems met	Operation
	Check that there are no control unit errors. In particular: Clutch sensor error Clutch solenoid valve current error Pump relay error Load relay error Selespeed pump error	Continue to Step 3	Presence of one or more of the errors included in the list	Continue to Step 1
5	CHECKS ON FAULTS DETECTED	All OK	Problems met	Operation
	Check the faults See Test 2127I What to do depending on the error' present in the Selespeed control unit No accelerator pedal information.	End of diagnosis	Faulty connections (Clutch sensor, Clutch solenoid current, Pump relay error, Load relay error, Selespeed pump, and/or Engagement sensor)	Repair/replace the wiringContinue to Step 6
			There are no faulty connections (Clutch sensor)	Replace the clutch actuator (CSC) and check its operation by carrying out a gear change.Continue to Step 6
			There are no faulty connections (Clutch solenoid current)	Replace the solenoid Op. 2127C56 valve and check its operation by carrying out a gear change.Continue to Step 6
			Faulty pump relay and/or fuse (Selespeed pump)	Replace the componentContinue to Step 6
			Pump winding faults (Selespeed pump)	Replace the component Op. 2127C30 Continue to Step 6
6	AFTER THE CHECKS ON THE FAULTS DETECTED	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	The fault persists	Continue to Step 7
7	CHECK CLUTCH SENSOR WIRING LAYOUT	All OK	Problems met	Operation
	Check the state of the connections, continuity of the wiring (it is important to pay particular attention to the layout of the clutch position sensor wiring in the engine compartment: the wire must not be too taut, and it must have sufficient slack)	Continue to Step 8	A fault is detected	Repair/replace the part that is not workingContinue to Step 9
8	CARRY OUT CLUTCH PARAMETER CALIBRATION USING THE EXAMINER	All OK	Problems met	Operation
	In active diagnosis carry out the calibration of the clutch parameters through the 'clutch self-calibration enablement' with a positive result	Continue to Step 9	The calibration is not successful	Continue to Step 10
9	CHECK THAT THE FAULT IS NO LONGER PRESENT	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	The fault persists	Continue to Step 10
10	THE FAULT PERSISTS	All OK	Problems met	Operation
	Contact Technical Service for further information on the problem	End of diagnosis	Fault persists	Search for the fault starting from another symptom'