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Fiat Grande Punto Factory Service Manual (2005-2012)22 · Fault diagnosis
22 · Diagnostics

Excessive brake pedal free play

Make
Fiat
Model
Grande Punto Factory Service Manual
Year
2005–2012
Section
Brakes › Excessive brake pedal free play
Fault diagnosisExcessive brake pedal free play

EXCESSIVE BRAKE PEDAL FREE PLAY

When the brake pedal is pressed, the travel is greater than normal

Results of the tests
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
First of all check whether the problem is accompanied by poor braking actionMove on to Step 1There is also poor braking action

Proceed as instructed in the diagnosis

See table F001 POOR BRAKING ACTION

1OIL LEAKS CHECKAll OKProblems encounteredOperation

For the 1.9 JTD;

Visually inspect for fluid leaks in the braking system circuit

Move on to Step 2

1. Fluid leak detected

2. Component defective

1. Retighten connectors

Op. 3330A HYDRAULIC BRAKING SYSTEM TESTS AND CHECKS

2. Replace the defective component

1OIL LEAKS CHECKAll OKProblems encounteredOperation

For the 1.2 8v, 1.4 8v, 1.3 JTD;

Visually inspect for fluid leaks in the braking system circuit

Move on to Step 5

1. Fluid leak detected

2. Component defective

1. Retighten connectors

Op. 3330A

2. Replace the defective component

2CHECK FOR FLUID LEAKS FROM BRAKE PUMPAll OKProblems encounteredOperation

For the 1.9 JTD;

Disconnect the non-return valve connector from the brake servo and introduce a pipe cleaner in order to reach the lowest part of the brake servo chamber. Check that there is no fluid in the chamber

Move on to Step 3Fluid in the brake servo chamber

Replace brake servo

Op. 3330D02 BRAKE SERVO/BRAKE PUMP ASSEMBLY - R.R.

3CHECK FOR AIR IN THE CIRCUITAll OKProblems encounteredOperation

For the 1.9 JTD;

Check for any air in the braking circuit

Move on to Step 4Air in the circuitBleed the air from the system
4REAR BRAKE CLEARANCE RECOVERY DEVICE CHECKAll OKProblems encounteredOperation

For the 1.9 JTD;

Check that the rear brakes clearance recovery device is working efficiently

End of diagnosisRear brake caliper faulty

Replace the rear brake caliper involved

Op. 3310B36 REAR BRAKE CALIPER (ONE), LEFT OR RIGHT - R.R

5CHECK THE CLEARANCE BETWEEN THE DRUM AND THE SHOESAll OKProblems encounteredOperation

For the 1.2 8v, 1.4 8v, 1.3 JTD;

Check the clearance between the shoes and the drum, measuring the difference between the diameter of the drum and the diameter of the brake measured on the centre line axis of the shoes

Move on to Step 7Drum / shoe clearance not correctMove on to Step 6
6CHECK THAT THE SELF-ADJUSTMENT DEVICE IS WORKING PROPERLYAll OKProblems encounteredOperation

For the 1.2 8v, 1.4 8v, 1.3 JTD;

Check the operation of the self-adjustment device, activating it several times

Move on to Step 7Incorrect operation of self-adjustment deviceReplace the self-adjustment device
7CHECK ON CORRECT OPERATIONAll OKProblems encounteredOperation

For the 1.2 8v, 1.4 8v, 1.3 JTD;

Check that the fault is no longer present

End of diagnosisThe fault is still presentCheck the operation of the other parts of the braking system (caliper, pipes, brake pump).

Parts & tools for this job For 2005 Fiat Grande Punto

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