SECTION 4 – ENGINE OPERATION
Operation (cont.)
ENGINE IDLE SHUTDOWN TIMER (FEDERAL-OPTIONAL)
(cont.)
• Vehicle movement or a Vehicle Speed Sensor (VSS) fault is
detected.
• Manual DPF Regeneration is enabled (Parked Regen).
• Accelerat or pedal mov ement 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.
ENGINE IDLE SHUTDOWN TIMER
(CALIFORNIA-STANDARD)
GOVERNMENT REGULATION: State and local
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 E ngine Control
Module (ECM) to shutdown the engine during extended idle.
When parking brake is set, the idle time can be programmed
up to 5 minutes. When parkin g brake is re leased, the idle time
canbeprogrammedupto15minutes. Noparkingbrake,the
idletimecanbeprogrammedupto15minutes.Duringservice,
the idle time can be programmed up to 60 minutes. The ECM
will deactivate the IST when the PTO is active.
Form No. 1172040R1
Printed in the United States of America Page 53
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