The gears do not engage in "auto" operation

Make: Fiat
Model: Stilo Factory Service Manual
Year: 2001–2007
Section: Gear shift › The gears do not engage in "auto" operation

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Fault diagnosisThe gears do not engage in "auto" operation

THE GEARS DO NOT ENGAGE IN "AUTO" OPERATION

2.4 20v

The gearbox remains stuck in one gear

Whilst stationary the vehicle changes down to first gear and then no other gear can be engaged

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	Oil level below Max reference	Top up the oil level Continue to Step 1
	Check the oil level See Test 2127B OIL LEVEL CHECK	Continue to Step 2	Level above Max reference	Reduce to Max level Continue 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 Continue 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 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 battery Continue to Step 3
		Continue to Step 4	It is not possible to carry out gear changes from the lever	Activate the 'clutch bleed' service from the Examiner Plus or Smart to activate the pump Continue to Step 3
4	CONTROL UNIT ERRORS CHECK	All OK	Problems met	Operation
	Check that there are no control unit errors. In particular: Brake switch error Clutch sensor error Control unit faulty error (microprocessor) Even gear engagement error Odd gear engagement error Clutch solenoid valve current error Electromagnetic brake error (Selection solenoid) Control unit earth error Load relay error If there is a brake switch error, the recovery considers the brake to be constantly pressed with the engine running; this means that only changes to lower gears can take place in automatic mode	Continue to Step 7	Presence of one or more of the errors included in the list	Continue to Step 5
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, Odd or even gear engagement, Clutch solenoid current, Electromagnetic brake, Control unit earth error and/or Load relay error)	Restore/replace the wiring Continue to Step 6
			The change of state does not take place (brake switch)	Check the brake pedal switch, its attachment and the state of the wiring connections. Restore correct operation Continue 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
			The test is not successful (Odd or even gear engagement)	Replace the solenoid valve Op. 2127C52 Continue to Step 6
			There are no faulty connections (Clutch solenoid current)	Replace the solenoid valve Op. 2127C56 Continue to Step 6
6	AFTER THE CHECKS ON 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 THE CLUTCH DISC SPEED SENSOR	All OK	Problems met	Operation
	Check the clutch disc speed signal See Test 2127A Check on operation of clutch plate speed sensor through road test	Continue to Step 11	There are problems with the sensor signal	Continue to Step 8
8	CHECK THE STATE OF THE CONNECTIONS	All OK	Problems met	Operation
	Check the state of the connections and wiring of the speed sensor. Remember that this sensor is on the gearbox bellhousing near the reversing lights sensor	Continue to Step 9	There are faults detected	Repair/replace the part that is not working Continue to Step 10
9	REPLACE THE CLUTCH DISC SPEED SENSOR	All OK	Problems met	Operation
	Replace the clutch disc speed sensor Op. 2127E52	Continue to Step 10
10	AFTER THE CHECK ON THE CLUTCH DISC SPEED SENSOR	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	The fault persists	Continue to Step 11
11	THE FAULT PERSISTS	All OK	Problems met	Operation
	THE FAULT PERSISTS Contact Technical Service for further information on the problem	End of diagnosis	Fault persists	Search for the fault starting from another symptom'

Sometimes, for a few seconds no gear can be engaged from the lever

Failed engagement of reverse gear and/or neutral

It is not possible to request a gear change using the lever (gear suggestion)

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 Max reference	Top up the oil level Continue to Step 1
	Check the oil level See Test 2127B OIL LEVEL CHECK	Continue to Step 2	Level above Max reference	Reduce to Max level Continue 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 level Continue 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 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 battery Continue 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 pump Continue to Step 3
4	CHECK THAT THE LEVER AND AUTO BUTTON ARE WORKING PROPERLY	All OK	Problems met	Operation
	Check that the lever and auto button are working properly See Test 2127G CHECK ON BUTTONS ON STEERING WHEEL AND GEAR LEVER	Continue to Step 6	The lever or the button is not working properly	Check the state of the connections and the wiring. Repair/replace the part that is not working. Continue to Step 5
		Continue to Step 6	There is no change of state and/or the word 'AUTO is not displayed	Check the button and the wiring. Continue to Step 5
5	AFTER THE CHECK ON THE CORRECT OPERATION OF THE LEVER AND AUTO BUTTON	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	The fault persists	Continue to Step 6
6	CONTROL UNIT ERRORS CHECK	All OK	Problems met	Operation
	Check that there are no control unit errors. In particular: Lever switches error 0/1/2/3 Lever switch error (any of the 4 switches or auto switch)	Continue to Step 9	Presence of one or more of the errors included in the list	Continue to Step 7
7	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	The state displayed is not correct (Lever switches error 0/1/2/3 and/or Lever switch error - Check lever)	Check the connections, continuity of the wiring and the gear lever Continue to Step 8
		End of diagnosis	There is no change of state and/or the word 'AUTO is not displayed (Lever switch error - Auto button check)	Check the button and wiring Continue to Step 8
8	AFTER THE CHECKS ON FAULTS DETECTED	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	The fault persists	Continue to Step 9
9	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'

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Parts & tools for this job For 2001 Fiat Stilo

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