22 · Diagnostics

Parking brake failure warning light on

Make: Fiat
Model: Bravo Factory Service Manual
Year: 2007–2014
Section: Instrument panel › Parking brake failure warning light on

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Fault diagnosisParking brake failure warning light on

PARKING BRAKE FAILURE WARNING LIGHT ON

The brake fluid warning light remains on with the handbrake released.

The (negative) brake fluid level signal is sent by the sensor to the Body Computer Node which makes it available via the B-CAN to the Instrument Panel Node.

The Instrument Panel Node lights up the dedicated warning light if the brake fluid level is too low.

0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
		TEST RESULTS
	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 line	Move on to Step 5	1. Fault in CAN 2. Communication with the Body Computer impossible	1. Continue following the instructions given by the diagnostic equipment 2. Move on to Step 2
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the Examiner connected, check the plausibility of the brake fluid level parameter at the Body Computer Node	Move on to Step 4	1.The parameter is not plausible 2.Impossible to connect to the Body Computer control unit	1.Replace Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R. 2. Move on to Step 2
2	ELECTRICAL POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the electricity supply to the Body Computer Node is correct.	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	BRAKE FLUID LEVEL CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the brake fluid level is not low	Move on to Step 9	Insufficient brake fluid level	Move on to Step 4
4	BRAKE FLUID LEVEL TOP UP	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Top up the brake fluid level and check that the warning light goes out	End of diagnosis	The warning light does not go out	Move on to Step 6
5	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the diagnostic equipment connected, check that there are no CAN faults at the BRAKE NODE	Move on to Step 6	Fault at C-CAN	Move on to Step 11
6	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Disconnect the connector from the oil level sensor and check that it is working properly See E4010 INSTRUMENT PANEL	Move on to Step 7	Brake fluid level sensor defective	Replace the brake fluid level sensor Op. 3330C30 BRAKE FLUID RESERVOIR - R + R AND WASH INSIDE
7	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity of the cable from the connector to the Body Computer See E4010 INSTRUMENT PANEL	Move on to Step 8	Lead broken	Restore the correct connection See E4010 INSTRUMENT PANEL
8	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner or keep it connected and check the operation of the brake fluid level warning light in active diagnosis at the Instrument Panel Node	Move on to Step 11	The warning light does not flash	Replace the instrument panel Op. 5560B10 CONTROL PANEL - R+R
9	ELECTRICAL POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the electricity supply to the Instrument Panel Node is correct.	Move on to Step 10	Fault in positive electrical supply and/or earth.	Replace defective component (in the case of a fuse, find out what caused it to blow).
10	ELECTRICAL CONNECTIONS CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the electrical connections between the Body Computer and the Instrument Panel. In particular, check that each individual pin is properly connected.	Move on to Step 11	Electrical connections not operational.	Refit the electrical connections correctly.
11	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the Examiner connected, check the plausibility of the brake fluid level parameter at the Body Computer Node	End of diagnosis	The parameter is not plausible	Replace Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.

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Parts & tools for this job For 2007 Fiat Bravo

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