Unexpected Brake Pedal Reaction

UNEXPECTED BRAKE PEDAL REACTION

Description

A malfunction of brake pedal feel (height or others) is detected when brake pedal is depressed.


Diagnosis Procedure


1. CHECK FRONT AND REAR AXLE

Check that there is no excessive looseness in front and rear axle.
- Front axle
- 2WD: Inspection.
- AWD: Inspection.
- Rear axle: Testing and Inspection.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace error-detected parts.

2. CHECK DISC ROTOR

Check disc rotor runout.
- Front: Front Disc Brake.
- Rear: Rear Disc Brake.
Is the inspection result normal?
YES- GO TO 3.
NO- Refinish the disc rotor.

3. CHECK BRAKE FLUID LEAKAGE

Check fluid leakage.
- Front: Inspection.
- Rear: Inspection.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts.

4. CHECK BRAKE PEDAL

Check each item of brake pedal. Adjustments.
Is the inspection result normal?
YES- GO TO 5.
NO- Adjust each item of brake pedal. Adjustments.

5. CHECK BRAKING FORCE

Check brake force using a brake tester.
Is the inspection result normal?
YES- GO TO 6.
NO- Check each components of brake system.

6. CHECK BRAKE PERFORMANCE

Disconnect ABS actuator and electric unit (control unit) connector so that ABS does not operate. Check that brake force is normal in this condition. Connect harness connectors after checking.
Is the inspection result normal?
YES- Normal
NO- Check each components of brake system.