Monitor Description

Based on the signals from the throttle position sensor, the air flow meter and the crankshaft position sensor, the TCM sends a signal to the solenoid valve SL to regulate the hydraulic pressure and provide smooth torque converter clutch engagement. The shift solenoid valve SL responds to commands from the TCM and controls the lock-up relay valve to perform the torque-converter lock-up function. If the TCM detects an open or short circuit in the shift solenoid valve SL circuit, it will illuminate the MIL.