Description:
The Warm Up Mode Idle Speed parameter determines engine speed while the engine is in the warm up mode. The Warm Up Mode Idle Speed parameter will be activated when the sum of coolant temperature and intake manifold air temperature is less than 86 o F (30 o C).
While the engine is in the warm up mode, the engine will return to low idle if either the service brake or the clutch pedal is depressed, an automatic transmission is put in gear, or the ECM detects vehicle speed. After returning to low idle, the engine can then return to Warm Up Mode Idle Speed if the sum of coolant temperature and intake manifold temperature 86 o F (30 o C) as mentioned above.
Note:
Heavy duty warm up speed is non-programmable and is fixed at 1000 rpm.
Available:
Medium duty on-highway engines
Range:
Advantages:
This parameter allows the driver a flexible rpm range for the Warm Up Mode Idle Speed depending upon the specific application.
Disadvantages:
None