22 · Diagnostics

Esp warning light on

Make: Fiat
Model: Croma Factory Service Manual
Year: 2005–2010
Section: Instrument panel › Esp warning light on

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Fault diagnosisEsp warning light on

ESP WARNING LIGHT ON

N.B.: The brake node sends the ABS warning light on message via the C-CAN to the Body Computer which makes it available via the gateway to the Instrument Panel Node through the B-CAN.

In the event of faults in the C-CAN network, the fault warning lights for the control units that communicate via this network will light up. The CAN NETWORK INFORMATION check is intended to test for this problem.

0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the EXAMINER diagnostic tester and check on CAN NETWORK INFORMATION: No control units inactive No faulty control units No control units with faulty CAN line;	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. Impossible to communicate with the Body Computer	2. Move on to Step 7
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the diagnostic tester connected, check on the BRAKE NODE: No system/component errors No CAN faults	Move on to Step 2	1. System/components faulty	1. Continue following the instructions for the diagnostic equipment
		Move on to Step 2	2. Fault on C-CAN network	2. Move on to Step 7
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Using the Examiner diagnostic equipment in Instrument Panel Node mode, check that there are no errors and that the parameters are present.	Move on to Step 3	Presence of errors	Continue following the instructions on the diagnostic tester
3	ELECTRICAL POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the Instrument panel node electrical supply is correct.	Move on to Step 4	Fault in electrical supply positive and/or earth.	Replace defective component (in the case of a fuse, find out what caused it to blow).
4	CHECK ELECTRICAL CONNECTIONS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the electrical connections between the Body Computer and Instrument Panel, in particular that each individual pin is correctly connected.	Move on to Step 5	Electrical connections not operational.	Renew the damaged electrical connections
5	ACTIVE DIAGNOSIS CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	With the Examiner in Instrument Panel Node mode check that the ESP activation warning light is correctly activated in Active Diagnosis.	Move on to Step 6	The ESP warning light does not flash	Replace the instrument panel Op. 5560B10 CONTROL PANEL - R+R
6	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Using the Examiner diagnostic equipment in Body Computer Node mode that there are no errors and that the parameters are present.	Move on to Step 9	1. Impossible to connect to the Body Computer control unit.	1. Move on to Step 7
			2. Presence of errors.	2. Continue following the instructions on the diagnostic tester
			3. The parameter values do not change	3. Move on to Step 8
7	ELECTRICAL POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the Body Computer Node electrical supply is correct.	Move on to Step 8	Fault in electrical supply positive and/or earth.	Replace defective component (in the case of a fuse, find out what caused it to blow).
8	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Use the Examiner to check the possibility of connection to the Body Computer Node.	Move on to Step 9	Impossible to connect to the Body Computer control unit.	Replace Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.
9	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis

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Parts & tools for this job For 2005 Fiat Croma

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