3360219 - F20 ABS WORKING IRREGULARLY

The ABS warning light does not come on and system is observed to work irregularly.
Results of the tests
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Check an Examiner to the tester input and check the Brake Node in error mode to ensure:

  • that there are no faults

In parameter mode:

  • the plausibility of all the parameters.

In active diagnosis mode:

  • operation of ABS warning light
Continue to Step 2Presence of faults Continue according to the instructions for the diagnostic equipment
The warning light does not come onChange brake system control unit Op. 3340A20
2CHECKING BRAKE HYDRAULIC SYSTEMAll OKProblems metOperation
Disconnect the ABS electrical connection and test the efficiency of the braking system with the aid of a service rig.Continue to Step 3Braking action not balancedOverhaul the braking system
3CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present
The test is essential, as the braking system involves a safety feature of the car
Fault persistsReplace the brake system hydraulic unit Op.   3340A12  Search for the fault starting from another symptom'