22 · Diagnostics

Handbrake failure warning light on

Make: Lancia
Model: Thesis Factory Service Manual
Year: 2002–2009
Section: On-board instruments › Handbrake failure warning light on

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Fault diagnosisHandbrake failure warning light on

HANDBRAKE FAILURE WARNING LIGHT ON

The parking brake failure signal is sent from the electric Parking Brake Node (NPB) directly to the Instrument Panel Node. The Instrument Panel Node turns on a dedicated warning light and displays a parking brake fault message. The relevant message is displayed if the warning light is faulty.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check: no parking brake fault message no Parking Brake WARNING LIGHT fault message	Move on to Step	1. Parking brake fault message present on matrix	Move on to Step
		Move on to Step	2. Parking EPB warning light fault message present on matrix	Move on to Step
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner diagnostic equipment to the diagnostic connector check the following at the Parking Brake node: in error environment no system/component faults	Move on to Step	Presence of system/component faults	Continue following the instructions in the diagnostic table
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner diagnostic equipment to the diagnostic connector check the following at the Parking Brake node:in error environment no EPB input signal fault	Move on to Step	Presence of fault	Move on to Step
3	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Remove the instrument panel and check continity/insulation of the wiring between the Parking Brake Node and the Instrument Panel Node (Wiring Diagram ) E4010 INSTRUMENT PANEL	Move on to Step	wiring not insulated or interrupted	Restore the electrical connection (Wiring Diagram ) E4010 INSTRUMENT PANEL
4	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the Examiner diagnostic equipment connected to the diagnostic connector, check the following at the Parking Brake node: In active diagnosis environment operation of the parking brake fault warning light	Move on to Step	The warning light is not activated	Replace instrument panel See in Op. 5560B11 ANALOGUE CONTROL PANEL - R.R. or Replace
5	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Change Parking brake node [PR. 3380A64] See in Op. 3380A64 Electrically operated parking brake electronic control unit - R.R.

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Parts & tools for this job For 2002 Lancia Thesis

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