RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN C (2002)
The speed control can be disengaged also by any of the following conditions:
-
The vehicle speed signal increases at a rate of 10 mph per second (indicates that the co-efficient of friction between the road surface and tires
is extremely low).
-
Depressing the clutch pedal.
-
Excessive engine rpm (indicates that the transmission may be in a low gear).
-
The vehicle speed signal decreases at a rate of 10 mph per second (indicates that the vehicle may have decelerated at an extremely high rate).
-
If the actual speed is not within 20 mph of the set speed.
-
The previous disengagement conditions are programmed for added safety.
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Once the speed control has been disengaged, depressing the ACCEL switch restores the vehicle to the target speed that was stored in the
ECM's RAM.
NOTE: Depressing the OFF switch will erase the set speed stored in the ECM's RAM.
If, while the speed control is engaged, the driver wishes to increase vehicle speed, the ECM is programmed for an acceleration feature. With the
ACCEL switch held closed, the vehicle accelerates slowly to the desired speed. The new target speed is stored in the ECM's RAM when the
ACCEL switch is released. The ECM also has a tap-up feature in which vehicle speed increases at a rate of approximately 2 mph for each
momentary switch activation of the ACCEL switch.
The ECM also provides a means to decelerate without disengaging speed control. To decelerate from an existing recorded target speed, depress
and hold the COAST switch until the desired speed is reached. Then release the switch. The ON, OFF switch operates two components: the ECM's
ON, OFF input, and the battery voltage to the brake switch, which powers the speed control servo.
