Nissan Sentra Service Manual: Unexpected pedal reaction

Nissan Sentra Service Manual / Brakes / Brake control system / Symptom diagnosis / Unexpected pedal reaction

Diagnosis Procedure

1.CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Refer to BR-15, "Adjustment".

Is the stroke too big? YES >>

Bleed air from brake line and hose. Refer to BR-17, "Bleeding Brake System".
Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system fluid leakage, etc. Refer to brake pedal: BR-15, "Adjustment" or brake booster assembly BR-11, "Inspection".

NO >> GO TO 2

2.CHECK ABS FUNCTION

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

Is the inspection result normal? YES >> Inspection End.

NO >> Check brake system.

Excessive abs function operation frequency

Diagnosis Procedure 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. ...

The braking distance is long

Diagnosis Procedure CAUTION: The stopping distance on slippery road surfaces might be longer with the ABS operating than when the ABS is not operating. 1.CHECK ABS FUNCTION Turn ignition ...

Other materials:

Changing wheels and tires
Tire rotation NISSAN recommends rotating the tires every 7,500 miles (12,000 km). See “Flat tire” in the “In case of emergency” section of this manual for tire replacing procedures. As soon as possible, tighten the wheel nuts to the specified torque with a torque wrench. Wheel ...

Precautions For Engine Service
DISCONNECTING FUEL PIPING Before starting work, check no fire or spark producing items are in the work area. Release fuel pressure before disconnecting and disassembly. After disconnecting pipes, plug openings to stop fuel leakage. DRAINING ENGINE COOLANT Drain engine coolant and engi ...

Precaution
Precaution for supplemental restraint system (srs) "air bag" and "seat belt pre-tensioner" The supplemental restraint system such as вЂњair bagвЂќ and вЂњseat belt pre-tensionerвЂќ, used along with a front seat belt, helps to reduce the risk or severity of injur ...