Diagnostic Function
WARNING: This page is about a different car, the 2015 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
TCM conducts the fault detection of the stepper motor by comparing the target value of the primary pulley speed with the actual value. (Target value: Actual secondary pulley speed multiplied by pulley ratio corresponding to stepper motor position) (Actual measurement value: Actual primary pulley speed)