2006 Nissan Sentra Owner's Manual - Page 147

varies the brake fluid pressure to prevent each wheel from locking and sliding. By preventing wheel lockup, the system helps the driver maintain steering control and helps to minimize swerving and spinning on slippery surfaces. problem, but indicates that the system is functioning properly. However, the pulsation may indicate that road conditions are hazardous and extra care is required while driving. WARNING ● The anti-lock braking system is a sophisticated device, but it cannot prevent accidents resulting from careless or dangerous driving techniques. It can help maintain vehicle control during braking on slippery surfaces, but remember that the stopping distance on slippery surfaces will be longer than on normal surfaces even with the anti-lock braking system. Stopping distances may also be longer on rough, gravel or snow covered roads, or if you are using tire chains. Tire type and condition may also affect braking effectiveness. Always maintain a safe distance from the vehicle in front of you. Ultimately, the responsibility for safety of self and others rests in the hands of the driver. ● Tire type and condition of tires may also affect braking effectiveness. ● When replacing tires, install the specified size of tires on all four wheels. Using the system Depress the brake pedal and hold it down. Self-test feature The anti-lock braking system consists of electronic sensors and hydraulic solenoids controlled by a computer. The computer has a built-in diagnostic feature that tests the system each time you start the engine and move the vehicle at a low speed in forward or reverse. When the self-test occurs, you may hear a "clunk" noise and/or feel a pulsation in the brake pedal. This is normal and is not an indication of any malfunction. If the computer senses any malfunction, it switches the anti-lock braking system off and turns on the ABS brake warning light on the instrument panel. The braking system then operates normally, but without anti-lock assistance. If the light comes on during the self-test or while driving, take the vehicle to a NISSAN dealer for repair. WARNING Do not pump the brake pedal. Doing so may result in increased stopping distances. Normal operation The anti-lock braking system does not operate at speeds below 3 - 6 MPH (5 - 10 km/h). (The speeds vary according to road conditions.) When driving, the anti-lock braking system controls the wheels so they will not lock when braking abruptly or when braking on a slippery road. Thus, steering control is increased and swerving of the vehicle is decreased during emergency braking. The system detects the wheel rotation rate and electronically controls the pressure applied to each brake. Slight vibration on the brake pedal accompanied by noise usually occurs while the ABS system is operating. Such vibration and noise encountered during abrupt braking is not a Starting and driving 5-19