BENDIX BW2266 User Manual download pdf (Page 2)

What is the optional ABS Off-Road Mode?

This is an optional ABS feature operated by a dash-mounted switch for use when

operating your vehicle “off-road” on soft surfaces. Below 25 mph (40.2 kmh), this

feature improves ABS performance under off-road operating conditions. If your

vehicle is equipped with this feature, depress the “ABS off-road” switch when

operating on soft surfaces. Always remember to turn the ABS off-road feature off

when driving on a rm road surface. A new ignition cycle, or a second depression

of the off-road switch, will turn this function off and restore normal ABS functionality.

WARNING! The ABS off-road mode should not be used on normal, paved road

surfaces because vehicle stability and steerability may be reduced. The ABS

indicator lamp will ash slowly to indicate to the driver that the ABS off-road mode

is engaged.

What is Automatic Traction Control (ATC)?

ATC is an optional feature for Bendix

ABS-equipped vehicles. ATC controls wheel

spin during vehicle acceleration to improve traction.

• The ATC system will intervene automatically and apply braking pressure to a

spinning wheel transferring engine power to other drive wheels that have better

traction. This feature is active only at speeds below 25 mph (40.2 kmh).

• If all of the drive wheels begin to spin, the ATC system will reduce engine throttle

to improve traction at all of the drive wheels.

What is the Optional Deep Mud/Snow Mode?

This is an optional ATC feature operated by a dash-mounted switch. This function

allows greater engine power and more wheel spin during ATC operation. On vehicles

equipped with this feature, depress the “Mud/Snow” switch when operating on soft

road surfaces. The ATC lamp will ash slowly whenever the ATC system is operating

in the Mud/Snow mode. Always remember to turn the Mud/Snow feature off

when driving on a rm road surface. A new ignition cycle, or a second depression

of the Mud/Snow switch, will turn this function off.

What is Traction Control Override?

Another optional feature operated by a switch in the dash. When enabled, the ATC

lamp remains on to indicate that the ATC system has been turned off.

How Do I Operate a Vehicle with ATC?

If drive wheels begin to lose traction during acceleration, ATC will engage

automatically to assist the driver in accelerating the vehicle. The ATC lamp will

ash rapidly to let you know whenever ATC is actively functioning.

Note: For vehicles equipped with an interaxle differential lock switch, you should

consult the vehicle Operator’s Manual for additional information about that feature.

Typically, the driver is advised to stop the wheels from spinning and engage the

interaxle differential lock switch, but you should always follow the specic instructions

given in your vehicle’s Operator’s Manual for this feature and your vehicle’s particular

conguration.

What Is ABS?

ABS is an electronic control system that improves vehicle stability and steerability

by preventing wheel lock during braking.

How Does ABS Work?

The ABS system monitors wheel rotation, and if it detects any wheel locking up,

the system automatically reduces the brake pressure at that wheel. If necessary,

the ABS system automatically modulates braking forces at one or more of the wheel

ends. The system maintains lateral stability by preventing wheel lock during braking.

Important Safety Information About Bendix

Antilock Braking Systems (ABS)

Braking with ABS

• Do not pump your brakes. Use steady, even brake applications. Apply the

brake pedal with the same pressure as you would without ABS. If you are towing

a vehicle that is not equipped with ABS, you may need to adjust your braking

applications in some instances. See below.

• Do not attempt to modulate your brake applications to prevent wheel lock.

The system controls braking pressure automatically and independently at each

wheel end.

Limitations of ABS

• ABS does not apply the brakes automatically. It’s still up to you to apply the

brakes at the right time and with the right amount of pedal force. A basic ABS

system only starts to do its job after you apply the brake pedal.

• ABS is not a substitute for safe driving. Even with ABS, you must remain alert,

react appropriately and in a timely manner, and drive defensively. Don’t take

unnecessary risks. Cautious driving practices, such as maintaining an adequate

distance away from the vehicle ahead, not speeding, anticipating obstacles

and adjusting your vehicle’s speed for trafc, weather and road conditions, are

essential for safe operation.

Towed Vehicles Without ABS

Some towed vehicles, especially older trailers built before 2001, may not be

equipped with their own ABS systems. Use extra care when towing a vehicle that

is not equipped with its own ABS system. During emergency braking or braking

on slippery surfaces, a non-ABS equipped trailer could lose its lateral stability and

swing out if its wheels lock up. Use your mirrors to watch carefully and adjust your

brake applications as necessary to keep your tractor and the non-ABS equipped

towed vehicle in line with each other. Tractor ABS helps reduce the tendency to

jackknife, but it cannot prevent a non-ABS equipped trailer from swinging out.

Understanding Your ABS System

Dash Indicator Lamps

Tractor ABS Indicator Lamp

An amber ABS Indicator Lamp is typically located on the dashboard.

• At each vehicle ignition your ABS indicator lamp should illuminate as a bulb

check for approximately three seconds and then turn off. If the lamp does

not illuminate at ignition, you should have the vehicle serviced by a qualied

mechanic as soon as possible. Note: without a functioning indicator lamp,

you may not be able to determine the ABS status without using an external

diagnostic tool.

• If the indicator lamp remains on for more than three seconds after ignition,

or if it illuminates while you are driving, the ABS system may not be fully

functional or may be completely disabled. If the ABS is completely disabled

or not functioning properly, your vehicle will still have normal service braking

and it still can be driven, although without the benets of ABS. Have the

vehicle serviced by a qualied mechanic as soon as possible to restore full

ABS functionality.

• The ABS lamp is also used to indicate the optional off-road ABS mode. The

lamp will ash continually when the vehicle is operating in the off-road mode.

If the lamp stays on or illuminates during driving, ABS is not functional and

should be serviced. The vehicle will retain normal service braking, but without

the benets of ABS.

Trailer ABS Indicator Lamp

The Trailer ABS Indicator Lamp is also dash-mounted.

All trailers built since March, 2001 are able to communicate with the towing

vehicle and to operate the trailer ABS indicator lamp on the towing vehicle’s

dash. The dash-mounted Trailer ABS Indicator Lamp is in addition to a Trailer

ABS Indicator Lamp that is mounted on the side of the trailer itself.

All new trailers built since March 1, 2001 are equipped with an amber ABS

warning lamp located on the driver’s side near the rear of the trailer. The

operation of the lamp varies depending on how the ABS system is powered:

• Full-time powered ABS (usually obtaining power over the blue line of the

J560 connector): The trailer ABS warning lamp will function just like the

tractor ABS warning lamp, listed above.

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BENDIX BW2266 User Manual Page 2

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