Drift whilst braking
- Make
- Lancia
- Model
- Ypsilon Factory Service Manual
- Year
- 2003–2011
- Section
- STEERING – vehicle behaviour › Drift whilst braking
Fault diagnosisDrift whilst braking
DRIFT WHILST BRAKING
| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check that the brake pedal is not too soft | Continue to Step 1 | Brake pedal too soft | Continue according to the instructions in See table F10 EXCESSIVE BRAKE PEDAL FREE PLAY | |
| 1 | CHECK FOR OIL LEAKS | All OK | Problems met | Operation |
Check that there are no fluid leaks from:
| Continue to Step 2 | Fluid leak from a caliper | Replace the faulty caliper ( Op. 3310A30) | |
| Fluid leak from a wheel cylinder | Replace the faulty wheel cylinder ( Op. 3320B20) | |||
| 2 | CHECK ON BRAKE WEAR | All OK | Problems met | Operation |
| Check the brakes for wear | Continue to Step 3 | Brakes very worn | Overhaul the brakes | |
| 3 | CHECK ON WHEEL GEOMETRY | All OK | Problems met | Operation |
| Check the geometry and track of the wheel axle | Continue to Step 4 | Wheel geometry incorrect | Restore the correct wheel geometry ( Op. 4450A10) | |
| Wheel geometry incorrect | Restore the correct wheel geometry ( Op. 4450A40) | |||
| Wheel geometry incorrect | Restore the correct wheel geometry ( Op. 4450A90) | |||
| 4 | CHECK LOCKING OF REAR WHEELS | All OK | Problems met | Operation |
| Carry out a braking action and check that the rear wheels do not lock | Continue to Step 5 | The rear wheel lock | Adjust (Op. 3330C62) | |
| The rear wheel lock | If necessary replace the brake self-adjuster (Op. 3330C60) | |||
| 5 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket Check that there are no faults in the ABS control unit | Continue to Step 6 | Lack of dialogue with the control unit | Continue according to the instructions for the diagnostic equipment | |
| Lack of dialogue with the control unit | Restore the connection between the engine management control unit and the diagnostic connector ( See E7020 ABS) | |||
| 6 | CHECK ON DRIFT | All OK | Problems met | Operation |
Disconnect the ABS hydraulic control unit Check whether there is drifting during braking at variable speeds | Continue to Step 7 | Vehicle does not drift during braking | Replace the ABS hydraulic control unit (Op. 3340A10) Note: Carry out filling with the diagnostic instrument in active diagnosis | |
| 7 | 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 | Search for the fault starting from another symptom' | |
Parts & tools for this job Staging For 2003 Lancia Ypsilon
- TOOLTie rod end toolSearch: tie rod end puller
- TOOLBall joint separatorSearch: ball joint separator
- FLUIDPower steering fluidSearch: Lancia power steering fluid
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