2582394 - F01 POOR BRAKING ACTION

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Results of the tests
0All OKProblems metOperation
Check softness of brake pedalCheck stiffness of brake pedalContinue to Step 1Brake pedal too soft See table   F10  EXCESSIVE BRAKE PEDAL FREE PLAY
Hardening of brake pedal See table   F12  BRAKE PEDAL HARD
1CHECK ON CONTACT SURFACESAll OKProblems metOperation
Check type and surfaces of contactContinue to Step 2Pads vitrifiedReplace the pads concerned Op.   3310A50 
Dirty surfacesClean the surfaces in question
Small disc contact surfaceGrind the discs, or replace, if necessary Op.   3310A50 
2CHECK ON WHEEL CYLINDERSAll OKProblems metOperation
Check that the front caliper pistons have not seizedContinue to Step 3Wheel cylinders seizedReplace the pistons Op.   3310A38 
3CHECK ON PUSHRODAll OKProblems metOperation
Check the play on the brake servo pushrod controlling the master cylinderContinue to Step 4Excessive pushrod playAdjust the play
4CHECK ON BRAKING ACTIONAll OKProblems metOperation
Check that the braking effect does not decrease even after several braking actionsContinue to Step 6The braking effect decreases significantlyReplace the brake fluid with a type of higher viscosity and boiling point Op.   0010T62 
1.9 DIESELCheck that the braking effect does not decrease even after several braking actionsContinue to Step 5The braking effect decreases significantlyReplace the brake fluid with a type of higher viscosity and boiling point Op.   0010T63 
5CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
1.9 DIESELConnect diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Check that there are no faults in the ABS control unitContinue to Step 6An error is detected in the control unitContinue following the instructions for the diagnostic equipment
Lack of dialogue with the control unitRestore the connection between the engine management control unit and the diagnostic connector See   E7020  ABS
6CHECKING CORRECT OPERATIONAll OKProblems metOperation
Test the vehicle before delivery to the customer, to check that the fault is no longer present.
The test is essential, as the braking system involves a safety feature of the car
Fault persistsSearch for the fault starting from another symptom'