MBE 900 ENGINE 2007 OPERATOR'S GUIDE set vehicle speed. The vehicle speed must be above Min. Cruise Set Speed and below Max. Cruise Set Speed. It is recommended that Max Cruise Set Speed be set to the default to allow proper operation of other features such as Fuel Economy Incentive and PasSmart. The Vehicle Speed Limit should be used to limit vehicle throttle speed. LOSS OF VEHICLE CONTROL To avoid injury from the loss of vehicle control, do not use cruise control under these conditions: When it is not possible to keep the vehicle at a constant speed (on winding roads, in heavy traffic, in traffic that varies in speed, etc.).
When the SPD CNTL is in the ON position, Cruise Control is engaged by momentarily contacting the SET/CST Switch. As a check after each engine start, DDEC looks for a one time activation of the clutch (if equipped) and service brake before DDEC allows Cruise Control to be enabled. The MCM must also recognize that the Cruise Enable Switch has changed. If the Cruise Enable Switch is off, it needs to be turned on. If the Cruise Enable Switch is on, it must be turned off then on for cruise to operate. On slippery roads (wet pavement, ice-or snow-covered roads, loose gravel, etc.). NOTICE:
When descending a hill with Cruise Control OFF, do not allow the engine to exceed 2500 rpm under any conditions. Failure to observe this precaution can result in overspeeding and serious engine damage. Holding the switch in the SET/CST position allows the vehicle to slow to a lower speed. Toggling the switch will result in a one mile-per-hour (1.6 kph) decrease in vehicle speed. If Cruise Control has been disabled, toggling the RSM/ACC Switch restores the vehicle to the previously set cruise speed. It cannot limit vehicle speeds on down grades if available engine braking effort is exceeded, nor can it maintain speed on upgrades if power requirements exceed engine power capability.
Engine speed and power are varied under Cruise Control to maintain the All information subject to change without notice. (Rev. 04/08) 43 DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION