312000575 - H002 DRIFT WHILST BRAKING

The vehicle tends to drift to the left or the right whilst braking. If necessary, carry out a road test on a straight, flat road without transverse gradients to check the effective drift
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
First of all, check the type, condition and pressure of the tyres.Check that the wheel bolts are correctly fastened.Move on to Step 11. Tyre inflation pressure not correct2. Tyres unsuitable or worn3. Wheel bolts not correctly tightened.1. Make sure tyres are inflated to the correct pressure.2. Replace the tyres.3. Tighten the wheel bolts to the correct torque.
1BRAKING SURFACES CHECKAll OKProblems encounteredOperation
Check:

  • the condition of the front pads braking surfaces;
Move on to Step 21. Brake surfaces vitrified or with traces of grease, oil or water2. Front pads damaged or not the recommended type.1. Clean again, check and remove the causes of the fault2. Replace the front pads    Op. 3310A60 FRONT BRAKE PADS - REPLACE
2FRONT DISCS AND CALLIPERS CHECKAll OKProblems encounteredOperation
Check the condition of the front brake discs.Check the condition of the front brake caliper pistons.Move on to Step 31. Front discs worn or damaged.2. Front calliper pistons worn or seized.1. Replace the front discsOp. 3310A52 FRONT BRAKE DISCS - R+R WITH BRAKE CALIPERS REMOVED2. Replace the front brake callipers    Op. 3310A32 FRONT BRAKE CALIPERS - R.R.
3REAR DRUM CHECKAll OKProblems encounteredOperation
Check the condition of the rear drums.Check the condition of the rear shoe control cylinder.Move on to Step 41.Rear drums worn or damaged.2.Shoe control cylinder worn or seized.1.Replace the rear drums    Op. 3320B30 REAR BRAKE DRUM (ONE), LEFT OR RIGHT - R.R. 2.Replace the shoe control cylinder    Op. 3320B20 REAR BRAKE SHOE CYLINDER (ONE) LEFT OR RIGHT - REPLACE.
4CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the Examiner diagnostic equipment to the diagnostic socket.Check that there are no faults in the ABS control unit.Move on to Step 51. Error detected in the control unit.2. No communication with the control unit.1. Continue following the instructions on the diagnostic equipment2. Restore connection between the ABS control unit and the diagnostic connector    See E7020 ABS
5ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Keeping the Examiner diagnostic equipment connected carry out the active diagnosis of:

  • pump motor;
  • solenoid valves.
Move on to Step 6Pump and/or solenoid valves faulty.Replace the ABS electronic control unit electrohydraulic unit    Op. 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT - R.R.
6FRONT GEOMETRY CHECKAll OKProblems encounteredOperation
Check the vehicle geometry and front wheel angles    Op. 4450A10 FRONT WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT - INCLUDES ADJUSTMENT IF NECESSARY Move on to Step 71. Geometry not correct.2. Geometry not correct3. Angles not correct.1. Check and, if necessary, replace the shock absorber    Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/REASSEMBLY OF ASSEMBLY AT BENCH - R.R 2. Check and, if necessary, replace the spring    Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/REASSEMBLY OF ASSEMBLY AT BENCH - R.R 3. Restore correct angles    Op. 4450A10 FRONT WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT - INCLUDES ADJUSTMENT IF NECESSARY
7REAR GEOMETRY CHECKAll OKProblems encounteredOperation
Check the vehicle geometry and rear wheel angles    Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY End of diagnosis1. Geometry not correct.2. Geometry not correct.3. Angles not correct.1. Check and, if necessary, replace the shock absorber    Op. 4420A30 REAR SUSPENSION SHOCK ABSORBER (ONE), LEFT OR RIGHT - R.R. - CHECK WHEEL GEOMETRY SEPARATELY 2. Check and, if necessary, replace the spring    Op. 4420A40 L/H OR R/H REAR SUSPENSION COIL SPRING (ONE) - R+R 3. Restore correct angles    Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY