Engine Brake Control

The TCM controls the shift solenoids corresponding to such input signals as throttle opening, vehicle speed, shift range, and cruise control signals to automatically control the operation of the overrunning clutch and for positive application of engine brake.





1. In range D or 3, the overrunning clutch is kept inoperative by the action of the shuttle shift valve when the throttle opening is large. With small throttle valve opening, the overrunning clutch is engaged by the action of shift solenoid 3.
2. In range 2, the overrunning clutch is engaged by the operation of shift solenoid 3.
3. In range 1, the overrunning clutch is engaged irrespective of the operation of shift solenoid 3.