Features and Parameters

The ISC Idle features and parameters are easily set up. When deciding on the desired engine idle RPM make sure to pick an idle speed that doesn't promote noise and vibration. Idle Shutdown parameters should be set up to limit idle time, but not to inconvenience operators who rely on the engine for cab heat, air conditioning, etc...

Idle Engine Speed
Specify the desired idle speed. Speed should be chosen to limit cab noise and vibration. The range is between 600 and 800 RPM. A set speed of 700 rpm is recommended for automatic transmissions.

Idle Shutdown
Choose this feature to enable the engine to automatically shutdown after running at idle for a programmed amount of time. This feature is used to limit idle time and increase the vehicle's fuel economy.

Idle Shutdown Timer
Specify the maximum idle time allowed before engine shutdown (see table below for limits).

Idle Shutdown Manual Override

This feature option allows the operator to override the engine shutdown timer by altering the position of the accelerator, brake or clutch pedals during the last 30 seconds of the programmed shutdown time. During the last 30 seconds of programmed idle time the Amber dash light will begin flashing. Idle Shutdown Override should be used if the operator relies on engine power for cab heat, air conditioning, etc.

*Issue: For calibrations released before summer of 2004, if the Manual Override and Ambient Air Temperature Override options are both enabled, the driver will not be able to 'reset' the timer after the warning light starts flashing. Calibrations released after summer of 2004 will fix this issue.

Idle Shutdown in PTO
Choose this feature to enable the engine to automatically shutdown after running in PTO with no activity for a programmed amount of time. This feature is used to limit idle PTO time and increase the vehicle's fuel economy.

Idle Shutdown Percentage PTO Load Override
When Idle PTO Shutdown is enabled, the Idle Shutdown Percentage PTO Load Override is the threshold that will allow the user to operate PTO without the engine being shutdown due to the Idle Shutdown in PTO feature. As long as the engine load is greater than the customer-entered value for Idle Shutdown Percentage PTO Load Override, then the engine will not be shutdown.

If the engine load is less than the customer-entered value for Idle Shutdown Percentage PTO Load Override, then the engine will shut down after the Idle Shutdown Timer has expired. The Idle Shutdown Percentage PTO Load Override can be set at any value between 0% and 100%.

Idle Shutdown Hot Ambient Automatic Override
This parameter, when enabled, allows automatic override of the Idle Shutdown Hot Ambient Air Temperature threshold. This parameter is user adjustable.

Feature / Parameter

Range

Default

Idle Engine Speed - Parameter

600 - 800 rpm

700 rpm

Idle Shutdown - Feature Option

Enable/Disable

Disable

Idle Shutdown Timer - Parameter

2 - 100 minutes

60 minutes

Idle Shutdown Manual Override - Feature Option

Enable/Disable

Disable

Idle Shutdown in PTO - Feature Option

Enable/Disable

Disable

Idle Shutdown Percentage PTO Load Override - Parameter

0 - 100 %

10 %

Idle Shutdown Hot Ambient Automatic Override - Feature Option

Enable/Disable

Disable