Nissan Frontier D40. Manual - part 90

BRC-58

< SYMPTOM DIAGNOSIS >

[TYPE 1]

APPLICATION NOTICE

SYMPTOM DIAGNOSIS

APPLICATION NOTICE

Application Notice

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Service information

Remarks

TYPE 1

ABS

TYPE 2

VDC/TCS/ABS

TYPE 3

HILL DESCENT CONTROL/HILL START ASSIST/VDC/TCS/ABS

ABS

BRC-59

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ABS

Symptom Table

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If ABS warning lamp turns ON, perform self-diagnosis.

NOTE:

• 1: The ABS does not operate when the speed is 10 km/h (6 MPH) or less.

• 2: Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly depressed. However, this is normal.

- When shifting gears

- When driving on slippery road

- During cornering at high speed

- When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]

- When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]

Symptom

Check item

Reference

Excessive ABS function operation fre-
quency

Brake force distribution

BRC-60, "Diagno-

sis Procedure"

Looseness of front and rear axle

Wheel sensor and rotor system

Unexpected pedal reaction

Brake pedal stroke

BRC-61, "Diagno-

sis Procedure"

Make sure the braking force is sufficient when the ABS is not operating.

The braking distance is long

Check stopping distance when the ABS is not operating.

BRC-62, "Diagno-

sis Procedure"

ABS function does not operate (Note 1)

ABS actuator and electric unit (control unit)

BRC-63, "Diagno-

sis Procedure"

Pedal vibration or ABS operation sound 
occurs (Note 2)

Brake pedal

BRC-64, "Diagno-

sis Procedure"

ABS actuator and electric unit (control unit)

BRC-60

< SYMPTOM DIAGNOSIS >

[TYPE 1]

EXCESSIVE ABS FUNCTION OPERATION FREQUENCY

EXCESSIVE ABS FUNCTION OPERATION FREQUENCY

Diagnosis Procedure

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1.

CHECK START

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

FAX-5, "On-Vehicle

Inspection and Service"

, Rear: 

RAX-6, "Rear Axle Bearing"

.

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. Refer to 

BRC-69, "Removal and Installation"

 or 

BRC-70,

"Removal and Installation"

.

• 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-21, "CONSULT-III Function (ABS)"

.

NO

>> Normal

UNEXPECTED PEDAL REACTION

BRC-61

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UNEXPECTED PEDAL REACTION

Diagnosis Procedure

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1.

CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Refer to 

BR-19, "Inspection and Adjustment"

.

Is the stroke too large?

YES

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

BR-21, "Bleeding Brake System"

.

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

fluid leakage, etc. Refer to 

BR-19, "Inspection and Adjustment"

 (brake pedal),  

BR-12, "On

Board Inspection"

 (master cylinder), 

BR-10, "Inspection"

 (brake booster).

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

>> Normal

NO

>> Check brake system.