Workshop Manuals Factory service & repair Fiat
Fiat Doblò Factory Service Manual (2000-2010)22 · Fault diagnosis
22 · Diagnostics

Abs working irregularly

Make
Fiat
Model
Doblò Factory Service Manual
Year
2000–2010
Section
Braking system › Abs working irregularly
Fault diagnosisAbs working irregularly

ABS WORKING IRREGULARLY

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Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the diagnostic equipment and check:

  • that there are no faults in the control unit
  • the plausibiilty of the parameters
Continue to Step 2Error detected in the control unitContinue following the instructions for the diagnostic equipment
Incoherent parameterContinue following the instructions for the diagnostic equipment
2ROAD TEST WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Road test the vehicle, reproducing the conditions in which the fault arises, keeping the diagnostic equipment connected.

  • that there are no faults in the control unit
  • the plausibiilty of the parameters
Continue to Step 3Error detected in the control unitContinue following the instructions for the diagnostic equipment
Incoherent parameterContinue following the instructions for the diagnostic equipment
3ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Carry out active diagnosis of:

  • solenoid valves
  • pump motor
Continue to Step 4Solenoid valves not workingReplace the ABS unit Op. 3340A12
Pump motor not workingReplace the ABS unit Op. 3340A12
5CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present

Fault persists

Control unit defective

Replace control unit Op. 3340A12

Search for the fault starting from another symptom'

Parts & tools for this job Staging For 2000 Fiat Doblò

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