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Lancia Thesis Factory Service Manual (2002-2009)22 · Fault diagnosis
22 · Diagnostics

The asr function is not deactivated

Make
Lancia
Model
Thesis Factory Service Manual
Year
2002–2009
Section
Brakes › The asr function is not deactivated
Fault diagnosisThe asr function is not deactivated

THE ASR FUNCTION IS NOT DEACTIVATED

When the button for deactivating the ASR function is pressed "ASR switched off" is not displayed for 5 seconds and the LED in the button does not light up; the function is not deactivated.

STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION

Connect the Examiner diagnostic equipment to the diagnostic connector check the following at the brake node:in error environment

  • that there are no faults
Move on to StepPresence of errors in the control unitContinue following the instructions in the diagnostic table
2SWITCH CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Check the operation of the ASR switch checking that there is a short circuit with the button pressed and an open circuit with the button released

(Wiring Diagram ) E7021 ASR / TCS

Move on to StepSwitch defectiveReplace the ASR switch
3SWITCH CONNECTIONS CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Check the continuity/insulation of the ASR switch circuit

(Wiring Diagram ) E7021 ASR / TCS

Move on to StepNo continuity/insulation

Restore the connections

(Wiring Diagram ) E7021 ASR / TCS

4CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION

Check that the fault is no longer present

The test is essential because the braking system is one of the vehicle's safety systems.

Fault persists ABS control unit defective

Replace the brake node

See in Op. 3340A12 A.B.S. hydraulic and electronic CONTROL UNIT - R.R. - Includes bleeding air

Parts & tools for this job For 2002 Lancia Thesis

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