System Description
WARNING: This page is about a different variant/trim than selected.
The ECM uses the signals from the throttle position sensor, Air-flow meter, turbine (input) speed sensor, intermediate (counter) shaft speed sensor and crankshaft position sensor to monitor the engagement condition of the lock up clutch.
Then the ECM compares the engagement condition of the lock up clutch with the lock up schedule in the ECM memory to detect a mechanical problems of the shift solenoid valve DSL, valve body and torque converter clutch.