Idle Shutdown Timer

21.0 Idle Shutdown Timer

To conserve fuel, the control system can be programmed to shut down the engine.The engine will shut down if it operates under reduced load with the vehicle stationary for a customer-defined period of time.This feature does not shut off vehicle electrical power. The Idle Shutdown Timer can be programmed between 1 and 1,440 minutes.The check engine lamp will begin to flash when the Idle Shutdown Timer enters the Driver Alert phase of the Idle Shutdown sequence.The Driver Alert phase is determined by the number of minutes programmed for the Idle Shutdown Timer, during this phase the check engine lamp will flash, warning the driver of an impending engine shutdown. When the Idle Shutdown Timer is programmed to one minute, the check engine lamp will begin to flash thirty seconds before the programmed time expires. If the Idle Shutdown Timer is programmed to two minutes or more, the check engine lamp will begin to flash ninety seconds before the programmed time expires. The operator can move the clutch or service brake during Driver Alert to override the timer.When the timer is overridden a diagnostic event is logged.The timer will remain in Override until the ECM has detected that the vehicle has moved. The status of the Shutdown Timer will be broadcast as part of the J1939 Data Link SHUTDOWN message $FEE4 (65,252). Note:If the transmission neutral switch is programmed and installed, the idle shutdown timer will not start counting if the transmission indicates that the transmission is in gear. OEM provided and installed components required: 1) Vehicle speed source. 2) Check Engine Lamp. 3) Service Brake Pedal Position Switch #1.(Service Brake Switch #2 if required by transmission style). 4) Clutch Pedal Position Switch.(If Transmission Style is programmed to Manual Option 1 or 2, Universal). 5) Transmission Neutral Switch (If Transmission style parameter is programmed to Automatic Option 3, Automatic option 4, AT/MT/HT Option 3, or AT/MT/HT Option 4). Customer Parameter programming required: 1) Idle Shutdown Time programmed in the 1 – 1440 minutes range. 2) Vehicle Speed Calibration.

21.1 Cold Mode Idle Shutdown Timer Enable

The Idle Shutdown Timer is disabled if Engine Coolant Temperature is less than 38 DEG C (100 DEG F) and the engine is running less than 15 minutes. After 15 minutes, the Idle Shutdown Timer is enabled regardless of engine coolant temperature. The default is set to Disabled. When programmed to Enabled, the Idle Shutdown Timer will begin counting down immediately once the engine reaches low idle.Regardless of Engine Coolant Temperature or how long the engine has been running.