AIR CONDITIONER GP 6T3389 - Caterpillar

strategy limits the engine speed in order to help avoid high loads on the transmission during trolling.During trolling, moving the engine throttle to full throttle will cause the speed of the engine to change from a programmable low idle speed to a maximum programmable trolling speed. The maximum programmable trolling speed is a customer specified parameter.
Table 1
Programmable Range
Minimum Default Maximum
900 rpm 900 rpm 1200 rpm The trolling mode will only be activated or deactivated by the Electronic Control Module (ECM) when engine speed is within 50 rpm of the programmed low idle engine speed. The trolling mode can also be activated when the engine is not running.