Figure 1.1 – Cold idle warm-up
The cold idle warm-up feature increases the engine’s idle speed to reduce warm-up time in cold climates. When the engine starts, if the coolant temperature is below the active coolant temperature threshold, the idle speed increases to a predefined reference speed. The engine will maintain this reference speed for a maximum time limit. If the coolant temperature reaches the inactive coolant temperature before the time limit expires, the engine returns to its normal low idle speed.
Figure 1.2 – Reference speed (1000 RPM)
Features and parameters
Figure 1.3 – Cold idle warm-up extended
Cold idle warm-up – When enabled, this feature increases the low idle speed to reduce engine warm-up time.
Active coolant temperature – Defines the coolant temperature (°F) at which cold idle warm-up activates.
Inactive coolant temperature – Defines the coolant temperature (°F) at which cold idle warm-up deactivates, returning the engine to low idle speed.
Reference speed – Sets the engine speed (RPM) reached when cold idle warm-up is active.
Time limit – Specifies the maximum duration (MM:SS) the engine remains at the reference speed during cold idle warm-up.
Cold idle warm-up extended – When enabled, provides additional parameters to expand the activation range of cold idle warm-up.
Extended active coolant temperature – Defines an extended threshold for coolant temperature (°F) below which cold idle warm-up remains active.
Extended inactive coolant temperature – Defines an extended threshold for coolant temperature (°F) above which cold idle warm-up becomes inactive.
Extended reference speed – Sets the idle engine speed (RPM) when cold idle warm-up extended is active.
Interaction with other features and parameters
Cold idle warm-up activates only after the engine warm-up protection status is inactive.
Figure 1.4 – Engine warm-up protection
Contact Us
Whatsapp: +84.858.966.333
Facebook: VIETVehicle Remote Delete Service
YouTube: VIETVehicle – ECM Delete Tuning
Tiktok: VIETVehicle.com
Website: VIETVehicle.com
