2582398 - F20 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 presentFault persistsControl unit defectiveReplace control unit Op.   3340A12  Search for the fault starting from another symptom'