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22 Cards in this Set
- Front
- Back
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What are the two primary functions of an ABS system? |
To help the operator, maintain control throughout the breaking application under less than ideal conditions The tone ring is to improve the chances of reducing overall stopping distance |
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The tone ring is typically part of or attached to |
Wheel hub |
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The modulator valve, send, and receive singles to and from the ECU true or false |
False modulator does not send signals to the ECU |
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The wheel speed sensor send a pulse single to the ECU True or false |
True |
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Which of the following is a four channel system? 2S/2M 4S/3M 6S/4M 6S/6M |
6S/4M |
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Attend him axle truck, tractor or bus has air ride suspension and the forecast for him system which axles would typically have wheel speed sensors |
Rear drive axle |
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The order in which the ECU instructs the modulator valve to control air pressure is Hold, reapply and exhaust Reapply exhaust and hold Exhaust hold and reapply Exhaust reapply and hold it |
Exhaust hold and reapply |
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Where are electronic control module’s Mountain on truck, tractors, buses and trailers |
Inside the truck, cab or bus baggage compartment mounted to the frame or crossmembers, or attached directly to the trailer air Reservoir |
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On initial start up the ABS warning lamp, lights up and stay on to indicate the operator that |
There is an existing fault The system could be functioning properly, but must be driven about 5 to 10 km to Confirm |
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Oh, engine exhaust and driveline retarders have sufficient break and capabilities to produce a wheel lock up condition, and the ABS system to be effective must be able to turn them off |
True |
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During a normal, breaking situation, the antilock ECU Only monitors wheel speeds Cycles of modulator valve Lights the indicator lamp Power down to a sleep mode |
Only monitors wheel speeds |
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As of March 1, 1998, the trailer antilock ECU received his power from |
The axillary pin of the trailer cord |
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During a breaking situation, the ATC valve Receives a single from the ECU Send supply air out to the delivery part to apply the relief valve Modulates, application, pressure Allows breaking application, pressure to pass out the delivery port |
Allows break, application, pressure to pass out the delivery port |
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The ATC indicator warning lamp is used to be Indicate the operator that the system is active Indicate the Dynomode is activated Indicate the driver has activated the deep snow/mud switch all of the above |
All of the above |
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In order for the ATC system to reduce talk to the drive wheels, the engine must be electronically controlled true or false |
True |
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Vehicles equipped with ATC Must not be tested on a chassis dinometer must have the ATC system disabled before testing on a chassis dynometer Typically produce 20% less torque and horsepower than rated Typically produce 20% higher torque rating without than those without |
Must have the ATC system disabled before testing |
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What are the two primary functions of roll stability control |
Help control vehicle stability Limit rollover conditions |
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What does the ECU monitor in order to respond to excessive speed on a curve? |
The ECU measures the lateral or side to side movements of the vehicle |
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What two trucks systems work with RSC to help reduce reaction time when needed |
Antilock brake system, electronic engine management |
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Explain the difference between roll stability control an electronic stability control |
Roll stability. Control does not offer direction control of the vehicle. |
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What additional component is added to the vehicle equipped with ESC Roll stability control valve ATC valve Brakedemand pressure switch Steering angle sensor |
Steering angle sensor |
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Which component allows for differential breaking of the steer axle to help prevent spin out or jackknife conditions |
Front axle control valve |
