Nissan Juke Service and Repair Manual : 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: Refer to FAX-41, "Inspection".

• Rear axle: Refer to RAX-4, "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
- LHD: Refer to BR-16, "DISC ROTOR : Inspection and Adjustment".

- RHD: Refer to BR-84, "DISC ROTOR : Inspection and Adjustment".

• Rear
- LHD: Refer to BR-18, "DISC ROTOR : Inspection and Adjustment".

- RHD: Refer to BR-86, "DISC ROTOR : Inspection and Adjustment".

Is the inspection result normal? YES >> GO TO 3.

NO >> Refinish disc rotor.

• Front
- LHD: Refer to BR-16, "DISC ROTOR : Inspection and Adjustment".

- RHD: Refer to BR-84, "DISC ROTOR : Inspection and Adjustment".

• Rear
- LHD: Refer to BR-18, "DISC ROTOR : Inspection and Adjustment".

- RHD: Refer to BR-86, "DISC ROTOR : Inspection and Adjustment".

3.CHECK BRAKE FLUID LEACKAGE

Check fluid leakage.

• Front
- LHD: Refer to BR-30, "FRONT : Inspection".

- RHD: Refer to BR-97, "FRONT : Inspection".

• Rear
- LHD: Refer to BR-39, "REAR : Inspection".

- RHD: Refer to BR-105, "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.

• LHD: Refer to BR-9, "Inspection and Adjustment".

• RHD: Refer to BR-77, "Inspection and Adjustment".

Is the inspection result normal? YES >> GO TO 5.

NO >> Adjust each item of brake pedal.

• LHD: Refer to BR-9, "Inspection and Adjustment".

• RHD: Refer to BR-77, "Inspection and Adjustment".

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.

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