Abs working irregularly
- Make
- Lancia
- Model
- Ypsilon Factory Service Manual
- Year
- 2003–2011
- Section
- Braking system › Abs working irregularly
Fault diagnosisAbs working irregularly
ABS WORKING IRREGULARLY
The system is not working properly.
| Results of the tests | ||||
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|---|---|---|---|
Connect the Examiner to the diagnostic connector and check the following at the brake node In errors ambient:
In parameter mode
In active diagnosis mode:
| Continue to Step 2 | Presence of errors at the vehicle speed sensors | Check the wiring for the wheel speed sensor concerned, making sure that there are no loose connections and that the sensor is correctly positioned | |
| Presence of other faults | Continue according to the instructions for the diagnostic equipment | |||
| The warning light does not come on | Change the brake system control unit | |||
| 2 | CHECKING BRAKE HYDRAULIC SYSTEM | All OK | Problems met | Operation |
| Disconnect the ABS electrical connection and test the efficiency of the braking system with the aid of a service rig. | Continue to Step 3 | Braking action not balanced | Overhaul the braking system | |
| 3 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
Check that the fault is no longer present the test is essential, as the braking system is a safety feature of the car | End of diagnosis | Fault persists | Replace the brake system hydraulic unit | |
Parts & tools for this job Staging For 2003 Lancia Ypsilon
- TOOLOBD2 scanner with ABSSearch: OBD2 scanner ABS SRS
- TOOLDigital multimeterSearch: automotive digital multimeter
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