2888362 - H02 DRIFT WHILST BRAKING
During braking, the car pulls to the right or left.If necessary, carry out a test on a straight, flat road with no cambers to check how much the car veers to one side.| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Preliminarily, check the type, condition and inflation pressure of the tyresCheck that the wheels are correctly fixed | Continue to Step 1 | Tyre inflation pressure not correct | Restore the tyre inflation pressures | |
| Tyres not suitable or worn | Replace the tyres | |||
| Wheel fixing not correct | Tighten the wheels correctly Op. 4450B10 | |||
| 1 | CHECK FRICTION SURFACES | All OK | Problems met | Operation |
Check:
| Continue to Step 2 | Friction surfaces vitrified or with traces of grease, oil or water | Clean, check and eliminate the causes of the fault | |
| Front brake pads damaged or wrong type | Replace pads Op. 3310A60 | |||
| Rear shoes damaged or wrong type | Replace the shoes Op. 3320B10 | |||
| 2 | CHECK FRONT DISCS AND CALIPERS | All OK | Problems met | Operation |
| Check condition of front brake discsCheck the condition of the brake caliper pistons | Continue to Step 3 | Front discs worn or damaged | Grind the discs Op. 3310A54 , or replace if necessary | |
| Front caliper pistons worn or seized | Replace brake calipers Op. 3310A30 | |||
| 3 | CHECK REAR DRUMS | All OK | Problems met | Operation |
| Check the condtion of the rear brake drums.Check the condition of the rear brake cylinders. | Continue to Step 4 | Rear drums worn or damaged | Replace the drums Op. 3320B30 | |
| Shoe control cylinders worn or seized | Replace the cylinders Op. 3320B20 | |||
| 4 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socketCheck that there are no faults in the ABS control unit. | Continue to Step 5 | An error is detected in the control unit | Continue according to the instructions for the diagnostic equipment | |
| Lack of dialogue with the control unit | Restore the connection between the ABS control unit and the diagnostic connector See E7020 ABS | |||
| 5 | ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Using the diagnostic equipment (Examiner or other instruments) carry out the active diagnosis of:
| Continue to Step 6 | Pump and/or solenoids faulty | Replace electrohydraulic unit-electronic control unit Op. 3340A12 | |
| 6 | FRONT WHEEL GEOMETRY CHECK | All OK | Problems met | Operation |
| Check the front wheel geometry and angles, Op. 4450A10 | Continue to Step 7 | Geometry not correct | Check and, if necessary, replace the damper Op. 4410A12 | |
| Angles not correct | Restore, where possible, the correct angles | |||
| 7 | CHECK REAR WHEEL GEOMETRY | All OK | Problems met | Operation |
| Check the rear wheel geometry and angles Op. 4450A40 | Continue to Step 8 | Geometry not correct | Check and, if necessary, replace the damper Op. 4420A30 | |
| Geometry not correct | Check the spring and replace if necessary Op. 4420A48 | |||
| Angles not correct | Restore, where possible, the correct angles | |||
| 8 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer presentEnd of diagnosis | Fault persists | Search for the fault starting from another symptom' | ||
| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Preliminarily, check the type, condition and inflation pressure of the tyresCheck that the wheels are correctly fixed | Continue to Step 1 | Tyre inflation pressure not correct | Restore the tyre inflation pressures | |
| Tyres not suitable or worn | Replace the tyres | |||
| Wheel fixing not correct | Tighten the wheels correctly Op. 4450B10 | |||
| 1 | CHECK FRICTION SURFACES | All OK | Problems met | Operation |
Check:
| Continue to Step 2 | Friction surfaces vitrified or with traces of grease, oil or water | Clean, check and eliminate the causes of the fault | |
| Front brake pads damaged or wrong type | Replace pads Op. 3310A60 | |||
| Rear shoes damaged or wrong type | Replace the shoes Op. 3320B10 | |||
| 2 | CHECK FRONT DISCS AND CALIPERS | All OK | Problems met | Operation |
| Check condition of front brake discsCheck the condition of the brake caliper pistons | Continue to Step 3 | Front discs worn or damaged | Grind the discs Op. 3310A54 , or replace if necessary | |
| Front caliper pistons worn or seized | Replace brake calipers Op. 3310A30 | |||
| 3 | CHECK REAR DRUMS | All OK | Problems met | Operation |
| Check the condtion of the rear brake drums.Check the condition of the rear brake cylinders. | Continue to Step 4 | Rear drums worn or damaged | Replace the drums Op. 3320B30 | |
| Shoe control cylinders worn or seized | Replace the cylinders Op. 3320B20 | |||
| 4 | CHECK BRAKE CIRCUIT | All OK | Problems met | Operation |
| Check the condition of the brake circuit | Continue to Step 5 | Leaks or damage in the components of the circuit | Replace the components involved | |
| Brake servo faulty | Replace the brake servo assembly Op. 3330D10 | |||
| 5 | FRONT WHEEL GEOMETRY CHECK | All OK | Problems met | Operation |
| Check the front wheel geometry and angles, Op. 4450A10 | Continue to Step 6 | Geometry not correct | Check and, if necessary, replace the damper Op. 4410A12 | |
| Angles not correct | Restore, where possible, the correct angles | |||
| 6 | CHECK REAR WHEEL GEOMETRY | All OK | Problems met | Operation |
| Check the rear wheel geometry and angles Op. 4450A40 | Continue to Step 7 | Geometry not correct | Check and, if necessary, replace the damper Op. 4420A30 | |
| Geometry not correct | Check the spring and replace if necessary Op. 4420A48 | |||
| Angles not correct | Restore, where possible, the correct angles | |||
| 7 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer presentEnd of diagnosis | Fault persists | Search for the fault starting from another symptom' | ||