Idle Adjust - Detroit Diesel DDEC VI Application And Installation

5.14

IDLE ADJUST

This function increases and/or decreases the engine idle speed up to a programmable limit (Max
Adjusted Idle Speed).
5.14.1 OPERATION
Engine idle speed can be varied by the operator using the Cruise Control switches if the following
conditions are satisfied:
□ Engine is running
□ Vehicle speed is less than 6 mph (10 km/h)
□ Cruise Control master switch is turned OFF
□ PTO is not active and enable switch is OFF
□ If an automatic transmission is in use, it is in neutral and no shift is in progress
□ Clutch pedal is not pressed
□ Throttle inhibit is not active
If any of the above conditions are not satisfied, Idle Adjust is cancelled and the normal idle
speed is restored.
The current desired speed is increased by 16 rpm (Single Step Adjusted Idle Speed) when the
Resume/Accel switch is toggled. Speed change is active after the switch is released. Holding the
Resume/Accel switch for more than one second the current desired speed will be increased by 100
rpm/sec (Ramp Rate Adjusted Idle Speed) as long as the switch is pressed and the programmed
Max Adjusted Idle Speed for idle increment is not exceeded.
Toggling the Set/Coast switch will decrease the current desired idle speed by 16 rpm (Single Step
Adjusted Idle Speed). Speed change is active after the switch is released. Holding the Set/Coast
switch for more than one second will decrease the current desired speed by 100 rpm/sec (Ramp
Rate Adjusted Idle Speed) as long as the switch is pressed and the minimum low idle speed is
not yet reached.
Once the desired idle speed has increased or decreased again, the new desired idle speed will be
stored until the ignition has been switched off.
All information subject to change without notice. (Rev. 01/07)
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
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