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•
Engine speed is not at idle speed (700 rpm).
•
Vehicle movement or a Vehicle Speed Sensor (VSS) fault
is detected.
•
Manual DPF Regeneration is enabled (Parked Regen).
•
Accelerator pedal movement or an Accelerator Pedal
Sensor (APS) fault is detected.
•
Engine coolant operating temperature is below 60 °C (140
°F).
•
Ambient temperature below 16 °C (60 °F) or above 44 °C
(110 °F).
•
Brake pedal movement or a brake switch fault is detected.
•
Parking brake transition is detected.
•
Clutch pedal is pressed or clutch pedal switch fault is
detected (manual transmissions, if equipped with a clutch
switch).
•
Shift selector is moved from neutral (automatic
transmissions).
•
If the IST is enabled, the Cold Ambient Protection (CAP)
will not function.
Page 52
SECTION 4 – ENGINE OPERATION
ENGINE IDLE SHUTDOWN TIMER
(CALIFORNIA-STANDARD)
regulations may limit engine idle time. The vehicle
owner or operator is responsible for compliance with
these regulations.
Your heavy duty diesel engine conforms to applicable California
Air Resources Board (CARB) Engine Shutdown System (ESS)
regulations. This vehicle is registered and certified for sale in
California.
The CARB Idle Shutdown Timer (IST) allows the Engine Control
Module (ECM) to shut down the engine during extended idle.
When parking brake is set, the idle time can be programmed up
to 5 minutes. When parking brake is released, the idle time can
be programmed up to 15 minutes. No parking brake, the idle
time can be programmed up to 15 minutes. During service, the
idle time can be programmed up to 60 minutes. The ECM will
deactivate the IST when the PTO is active.
GOVERNMENT REGULATION: State and local
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