Transmission/Transaxle Controls

Some A/T models are equipped with an electronic Transmission Control Module (TCM). TCM receives input signals from ignition coil (RPM signal), idle switch (on-off signal), throttle position sensor (variable signal) and full throttle switch (on-off signal). Based on these values, TCM calculates optimum timing and duration to energize shift solenoids, overrun clutch solenoid and lock-up solenoid. TCM also indicates when Overdrive (OD) is engaged by illuminating OD indicator light.