Nissan Sentra B18 (2020-2025) Service Manual: Brake Pedal Vibration or Operation Sound Occurs

Nissan Sentra B18 (2020-2025) Service Manual / Brakes / Brake Control System :: Vdc/tcs/abs / Symptom Diagnosis / Brake Pedal Vibration or Operation Sound Occurs

Diagnosis Procedure

Diagnosis Procedure

Brake pedal vibrates and motor sound from ABS actuator and electric unit (control unit) occurs when the engine starts.
Brake pedal vibrates during braking.

CAUTION:

Vibration may be felt when brake pedal is lightly depressed (just placing a foot on it) in the following conditions: This is normal.

When shifting gears

When driving on slippery road

During cornering at high speeds

When passing over bumps or grooves [Approx. 1.97 in (50 mm) or more]

When pulling away just after starting engine [at approx. 6.2 MPH (10 km/h) or higher]

SYMPTOM CHECK (1)
1. Check that there are pedal vibrations when the engine is started.
Do vibrations occur?
YES>>
GO TO 2.
NO>>
Check brake pedal. Refer to Inspection.
SYMPTOM CHECK (2)
1. Check that motor sound from ABS actuator and electric unit (control unit) occurs when the engine starts.
Does the operation sound occur?
YES >>
GO TO 3.
NO >>
Select “Self Diagnostic Result” mode of “ABS”.
SYMPTOM CHECK (3)
1. Check symptoms when electrical component (headlamps, etc.) switches are operated.
Does the symptom occur?
YES >>
Check that radio (including wiring), antenna and antenna lead-in wires are not located near ABS actuator and electric unit (control unit). Move them if they are located near ABS actuator and electric unit (control unit).
NO >>
GO TO 4.
PERFORM SELF DIAGNOSTIC RESULT
1. CONSULT
2. 1. Ignition switch OFF → ON.
    
    CAUTION:
  2. Repeat step 1 two or more times.
  3. Select “Self Diagnostic Result” mode of “ABS”.
Is any DTC detected?
YES >>
Check the DTC. Refer to DTC Index.
NO >>
Inspection End.

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