22 · Diagnostics

Handbrake applied warning light

Make: Fiat
Model: Grande Punto Factory Service Manual
Year: 2005–2012
Section: Instrument panel › Handbrake applied warning light

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Fault diagnosisHandbrake applied warning light

HANDBRAKE APPLIED WARNING LIGHT

The warning light is on constantly even with the handbrake released.

The command to switch on the handbrake warning light is sent by the switch on the lever to the Body Computer Node which makes it available on the B-CAN to the Instrument Panel Node.

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Results of the tests
	Check that the ABS warning light comes on and goes out during the initial test	Move on to Step 1	The ABS warning light also remains on	Continue as indicated See table K062 ABS AND HANDBRAKE WARNING LIGHTS BOTH ON
1	ELECTRICAL SYSTEM CHECK	All OK	Problems encountered	Operation
	Check the insulation to earth of the wiring between the Handbrake lever switch and the Body Computer	Move on to Step 2	Wiring not insulated	Restore the correct wiring See E4010 INSTRUMENT PANEL
2	SWITCH CHECK	All OK	Problems encountered	Operation
	Check the condition of the switch on the handbrake lever	Move on to Step 3	Switch defective	Replace the switch Op. 5550D18 HANDBRAKE ON WARNING LIGHT SWITCH - R+R
3	ACTIVE DIAGNOSIS CHECK	All OK	Problems encountered	Operation
	With the Examiner in the Instrument Panel Node ambient check that the handbrake warning light is correctly activated in Active Diagnosis.	Move on to Step 5	1. The handbrake warning light does not flash 2. Impossible to connect with the Instrument Panel Node 3. Presence of errors	1. Replace the Instrument Panel 2. Move on to Step 4 3. Continue by following the instructions on the diagnostic instrument
4	ELECTRICAL POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check the electricity supply to the Instrument Panel Node is correct.	Move on to Step 5	Fault in positive electrical supply and/or earth	Replace defective component (in the case of a fuse, find out what caused it to blow)
5	CHECK ELECTRICAL CONNECTIONS	All OK	Problems encountered	Operation
	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 6	Electrical connections not operational	Renew the damaged electrical connections
6	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Using the Examiner check, in the Body Computer ambient, that there are no errors and that the parameter specified varies	End of diagnosis	1. Impossible to connect to the Body Computer control unit. 2. Presence of errors 3. The parameters do not change	1. Move on to Step 7 2. Continue by following the instructions on the diagnostic instrument 3. Move on to Step 8
7	ELECTRICAL POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check the electricity supply to the Body Computer Node is correct.	Move on to Step 8	Fault in positive electrical supply 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	Operation
	Use an Examiner to check the possibility of connection to the Body Computer Node	End of diagnosis	Impossible to connect to the Body Computer control unit.	Replace Body Computer Op. 5505A32 BODY COMPUTER - R.R

‹ Prev Electric steering warning light off / (does not carry out initial test)Next › Seat belt unfastened warning light on

Parts & tools for this job For 2005 Fiat Grande Punto

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