Abs working irregularly
- Make
- Fiat
- Model
- Panda Factory Service Manual
- Year
- 2003–2012
- Section
- Braking system › Abs working irregularly
Fault diagnosisAbs working irregularly
ABS WORKING IRREGULARLY
Irregular system operation detected.
| Results of the tests | ||||
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|---|---|---|---|
Connect an Examiner to the tester input and check the brake node for the following in error modes: In the errors ambient, that there are no faults In the parameters ambient, the plausibility of all the parameters In the active diagnosis ambient, the operation of the ABS warning light | Continue to Step 2 | Presence of error C1040 | Check right front wheel speed sensor wiring | |
| Presence of error C1040 | Check left front wheel speed sensor wiring | |||
| Presence of error C1040 | Check right rear wheel speed sensor wiring | |||
| Presence of error C1040 | Check left rear wheel speed sensor wiring | |||
| Presence of error C1040 | Check right front wheel speed sensor. Ensure the connections are not loose and the sensor is correctly positioned and adjusted. | |||
| Presence of error C1040 | Check left front wheel speed sensor. Ensure the connections are not loose and the sensor is correctly positioned and adjusted. | |||
| Presence of error C1040 | Check right rear wheel speed sensor. Ensure the connections are not loose and the sensor is correctly positioned and adjusted. | |||
| Presence of error C1040 | Check left rear wheel speed sensor. Ensure the connections are not loose and the sensor is correctly positioned and adjusted. | |||
| Presence of error C1040 | Continue according to the instructions for the diagnostic equipment | |||
| Presence of error C1040 | 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 | Continue as instructed by the tester | 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 Fiat Panda
- TOOLOBD2 scanner with ABSSearch: OBD2 scanner ABS SRS
- TOOLDigital multimeterSearch: automotive digital multimeter
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