The gears do not engage in "auto" operation

Make: Fiat
Model: Panda Factory Service Manual
Year: 2003–2012
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

1.2 8v

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	CONTROL UNIT ERRORS CHECK	All OK	Problems met	Operation
		Results of the tests
	Check that there are no control unit errors. In particular: Brake switch error Clutch sensor error Microprocessor 2 error Even gear engagement error Odd gear engagement error Clutch solenoid 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 3	Presence of one or more of the errors included in the list	Continue to Step 1
1	CHECKS ON FAULTS DETECTED	All OK	Problems met	Operation
	Check the faults according to the See Test 2127I What to do for error in Selespeed control unit	Continue to Step 3	Faults detected (brake switch)	Restore correct operation Continue to Step 3
			Faulty connections (Clutch sensor, Odd or even gear engagement, Clutch solenoid valve current, Electromagnetic brake error, Control unit earth error and/or Load relay error)	Repair/replace the wiring Continue to Step 3
			Replace the Robotized Gearbox control unit (Microprocessor 2 error)	Continue to Step 3
			The active diagnosis for the solenoid valve is not successful and no faults are detected at the wiring (Odd or even gear engagement and/or Clutch solenoid valve)	Continue to Step 2
2	AFTER THE SOLENOID VALVE ACTIVE DIAGNOSIS	All OK	Problems met	Operation
	If this step has been reached for the active diagnosis of the clutch solenoid valve, replace it Op. 2127C56and check the operation by carrying out a C.M. If this step has been reached for the active diagnosis of the engagement solenoid valve, replace it Op. 2127C52and check the operation	Continue to Step 3
3	SOLENOID VALVE REPLACEMENT	All OK	Problems met	Operation
	If there is an electromagnetic brake error and no faults are detected at the connections/wiring, replace it Op. 2127C54and check that it is operating correctly	Continue to Step 4
4	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 5
5	OIL LEVEL CHECK	All OK	Problems met	Operation
	Check the oil level as described in See Test 2127B OIL LEVEL CHECK	Continue to Step 7	Level below the Max reference	Top up the oil level Continue to Step 6
		Continue to Step 7	Level above the Max reference	Reduce to the Max level Continue to Step 7
6	CHECK FOR OIL LEAKS	All OK	Problems met	Operation
	Check that there are no oil leaks as described in See Test 2127C CHECK FOR OIL LEAKS	Continue to Step 7	Oil leaks detected	Replace/repair the parts concerned, and top up the oil level Continue to Step 6
7	OIL PRESSURE CHECK	All OK	Problems met	Operation
	Check the oil pressure as described in See Test 2127D OIL PRESSURE CHECK	Continue to Step 9	Pressure < 40 bar	Continue to Step 8
8	ELECTRIC PUMP OPERATION CHECK	All OK	Problems met	Operation
	Check the correct operation of the pump as described in See Test 2127E ELECTRIC PUMP OPERATION CHECK	Continue to Step 9	Voltage below 11 V	Check the battery Continue to Step 8
		Continue to Step 9	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 8
9	CHECK THE CLUTCH DISC SPEED SENSOR	All OK	Problems met	Operation
	Check the clutch disc speed signal following See Test 2127A Check on operation of clutch plate speed sensor through road test	Continue to Step 12	There are problems with the sensor signal	Continue to Step 10
10	CHECK THE STATE OF THE CONNECTIONS	All OK	Problems met	Operation
	Check the state of connections and wiring of the speed sensor. Remember that this sensor is on the gearbox bellhousing near the reversing lights sensor	Continue to Step 11	There are faults detected	Repair/replace the part that is not working Continue to Step 12
11	REPLACE THE CLUTCH DISC SPEED SENSOR	All OK	Problems met	Operation
	Replace the clutch disc speed sensor Op. 2127E52	Continue to Step 12
12	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	Contact Technical Service for further information on the problem

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, obviously for the request to be accepted all the engine conditions in order to make the gear change must be satisfied)

0	CONTROL UNIT ERRORS CHECK	All OK	Problems met	Operation
		Results of the tests
	Check that there are no control unit errors. In particular: Lever switch error (any one of the 4 switches or the ECO/Normal switch)	Continue to Step 3	Presence of error indicated	Continue to Step 1
1	CHECKS ON FAULTS DETECTED	All OK	Problems met	Operation
	Check the faults according to the See Test 2127I What to do for error in Selespeed control unit	End of diagnosis	The state displayed is not correct (Lever switch error - Lever check)	Check the connections, continuity of the wiring and the gear lever Continue to Step 2
		End of diagnosis	There is no change of state and/or the word 'ECO is not displayed (Lever switch error - ECO button check)	Check the button and wiring Continue to Step 2
2	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 3
3	GEAR LEVER CHECK	All OK	Problems met	Operation
	Check that the gear lever is working properly following See Test 2127L GEAR LEVER CHECK	Continue to Step 4	The lever states displayed are not correct	Check the wiring and the switches/gear lever Repair/replace the part that is not working
		Continue to Step 4	There is no change of state and/or the 'AUTO button is not displayed	Check the switch and the wiring. Repair/replace the part that is not working
4	OIL LEVEL CHECK	All OK	Problems met	Operation
	Check the oil level as described in See Test 2127B OIL LEVEL CHECK	Continue to Step 6	Level below the Max reference	Top up the oil level Continue to Step 5
		Continue to Step 6	Level above the Max reference	Reduce to the Max level Continue to Step 6
5	CHECK FOR OIL LEAKS	All OK	Problems met	Operation
	Check that there are no oil leaks as described in See Test 2127C CHECK FOR OIL LEAKS	Continue to Step 6	Oil leaks detected	Replace/repair the parts concerned, and top up the oil level Continue to Step 5
6	OIL PRESSURE CHECK	All OK	Problems met	Operation
	Check the oil pressure as described in See Test 2127D OIL PRESSURE CHECK	Continue to Step 8	Pressure < 40 bar	Continue to Step 7
7	ELECTRIC PUMP OPERATION CHECK	All OK	Problems met	Operation
	Check the correct operation of the pump as described in See Test 2127E ELECTRIC PUMP OPERATION CHECK	Continue to Step 8	Voltage below 11 V	Check the battery Continue to Step 7
		Continue to Step 8	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 8
8	THE FAULT PERSISTS	All OK	Problems met	Operation
	Contact Technical Service for further information on the problem	End of diagnosis

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