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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Automatic Transmission - JATCO CVT) >> Description and Operation >> Transmission Component and System Description >> Control System >> Idling Stop Control

Idling Stop Control

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

In this system, ECM performs integrated control based on the information from control units, sensors and switches via CAN communication.

TCM switches electric oil pump relay on, when it comes to acceptable vehicle speed.

When CVT is in a condition of idling stop, TCM sends a signal of "ready" for idling stop to ECM.

ECM judges if it can stop engine based on the information from control units, sensors and switches and sends a signal of engine stop to related control units and stop the engine.

TCM commands electric oil pump to start/stop by PWM signal (duty%) and status signal of electric oil pump is transmitted through PWM signal (duty%) to TCM.

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