Nissan Sentra Service Manual: Pedal vibration or abs operation sound occurs

Diagnosis Procedure

CAUTION:

• Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly depressed (just place a foot on it). However, this is normal.

• When shifting gears

• When driving on slippery road

• During cornering at high speed

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

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

1.SYMPTOM CHECK 1

Check that there are pedal vibrations when the engine is started.

Do symptoms occur? YES >> GO TO 2

NO >> Inspect the brake pedal.

2.SYMPTOM CHECK 2

Check that there are ABS operation noises when the engine is started.

Do symptoms occur? YES >> GO TO 3

NO >> Perform self diagnostic result. Refer to BRC-31, "CONSULT Function (ABS)".

3.SYMPTOM CHECK 3

Check symptoms when electrical component (headlamps, etc.) switches are operated.

Do symptoms occur? YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is, move it farther away.

NO >> Inspection End.