22 · Diagnostics

Instrument panel not working

Make: Fiat
Model: Croma Factory Service Manual
Year: 2005–2010
Section: Instrument panel › Instrument panel not working

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Fault diagnosisInstrument panel not working

INSTRUMENT PANEL NOT WORKING

With the ignition ON, some of the warning lights are not timed and the instruments are not working with the engine running.

0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect an EXAMINER and check the following on CAN NETWORK INFORMATION: No control units inactive No faulty control units no control units with faulty CAN	Move on to Step 1	1. Fault on CAN network	1. Continue following the instructions for the diagnostic equipment
		Move on to Step 1	2. Communication impossible with the Body Computer	2. Move on to Step 2
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Using an Examiner check, in Instrument Panel mode, that there are no errors and that the parameters are present	Move on to Step 4	1. Presence of errors	1. Continue following the instructions on the diagnostic instrument
		Move on to Step 4	2. Communication impossible with the instrument panel	2. Move on to Step 3
2	ELECTRICAL POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the electricity supply to the Instrument Panel Node is correct by carrying out the test See Test 5560BV INSTRUMENT PANEL POWER SUPPLY CHECK	Move on to Step 3	Fault in positive electrical supply and/or earth	Replace defective component (in the case of a fuse, find out what caused it to blow).
3	CHECK ELECTRICAL CONNECTIONS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the wiring between the Body Computer and the Instrument Panel. In particular, check that each individual pin is properly connected.	Move on to Step 4	Electrical connections not operational	Renew the damaged electrical connections
4	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Using an Examiner check, in Body Computer Node mode, that there are no errors.	Move on to Step 7	1. Impossible to connect to the Body Computer control unit.	1. Move on to Step 5
		Move on to Step 7	2. Presence of errors	2. Continue by following the instructions on the diagnostic instrument
5	ELECTRICAL POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the electricity supply to the Body Computer Node is correct.	Move on to Step 6	Fault in positive electrical supply and/or earth	Replace defective component (in the case of a fuse, find out what caused it to blow)
6	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Use an Examiner to check the possibility of connection to the Body Computer Node.	Move on to Step 7	Impossible to connect to the Body Computer control unit.	Replace Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.
7	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis	The fault persists	Replace the Instrument Panel Op. 5560B10 CONTROL PANEL - R+R

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Parts & tools for this job For 2005 Fiat Croma

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