Nissan Qashqai (2007-2010). Manual — part 715

BRC-58

< SYMPTOM DIAGNOSIS >

[ABS]

EXCESSIVE ABS FUNCTION OPERATION FREQUENCY

SYMPTOM DIAGNOSIS

EXCESSIVE ABS FUNCTION OPERATION FREQUENCY

Diagnosis Procedure

INFOID:0000000000925077

1.

CHECK START

Check front and rear brake force distribution using a brake tester. Refer to

BR-46, "General Specifications"

(LHD models),

BR-90, "General Specifications"

(RHD models).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check brake system.

2.

CHECK FRONT AND REAR AXLE

Make sure that there is no excessive play in the front and rear axles.
• Front:

FAX-7, "Inspection"

(2WD models),

FAX-47, "Inspection"

(4WD models)

• Rear:

RAX-3, "Inspection"

(2WD models),

RAX-9, "Inspection"

(4WD models)

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning components.

3.

CHECK WHEEL SENSOR AND SENSOR ROTOR

Check the following.
• Wheel sensor installation for damage.
• Sensor rotor installation for damage.
• Wheel sensor connector connection.
• Wheel sensor harness inspection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> • Replace wheel sensor or sensor rotor.

• Repair harness.

4.

CHECK ABS WARNING LAMP DISPLAY

Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.

Is the ABS warning lamp illuminated?

YES

>> Perform self-diagnosis. Refer to

BRC-17, "CONSULT-III Function (ABS)"

.

NO

>> INSPECTION END

UNEXPECTED PEDAL REACTION

BRC-59

< SYMPTOM DIAGNOSIS >

[ABS]

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UNEXPECTED PEDAL REACTION

Diagnosis Procedure

INFOID:0000000000925078

1.

CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Refer to

BR-8, "Inspection and Adjustment"

(LHD models),

BR-52, "Inspection and

Adjustment"

(RHD models).

Is the stroke too large?

YES

>> • Bleed air from brake tube and hose. Refer to

BR-12, "Bleeding Brake System"

(LHD models),

BR-56, "Bleeding Brake System"

(RHD models).

• Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system

fluid leakage, etc.

- Brake pedal:

BR-8, "Exploded View"

(LHD models),

BR-52, "Exploded View"

(RHD models).

- Brake booster:

BR-14, "Exploded View"

(LHD models),

BR-58, "Exploded View"

(RHD models).

- Brake master cylinder:

BR-13, "Exploded View"

(LHD models),

BR-57, "Exploded View"

(RHD

models).

- Brake fluid:

BR-11, "Inspection"

(LHD models),

BR-55, "Inspection"

(RHD models).

NO

>> GO TO 2.

2.

CHECK FUNCTION

Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition. Connect connector after inspection.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check brake system.

BRC-60

< SYMPTOM DIAGNOSIS >

[ABS]

THE BRAKING DISTANCE IS LONG

THE BRAKING DISTANCE IS LONG

Diagnosis Procedure

INFOID:0000000000925079

CAUTION:

The stopping distance on slippery road surfaces might be longer with the ABS operating than when
the ABS is not operating.

1.

CHECK FUNCTION

Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector to deactivate
ABS. In this condition, check stopping distance. After inspection, connect connector.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check brake system.

ABS FUNCTION DOES NOT OPERATE

BRC-61

< SYMPTOM DIAGNOSIS >

[ABS]

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ABS FUNCTION DOES NOT OPERATE

Diagnosis Procedure

INFOID:0000000000925080

CAUTION:

ABS does not operate when speed is 10 km/h (6 MPH) or lower.

1.

CHECK ABS WARNING LAMP DISPLAY

Make sure that the ABS warning lamp turns OFF after ignition switch is turned ON or when driving.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Perform self-diagnosis. Refer to

BRC-17, "CONSULT-III Function (ABS)"

.