DTC 77

DTC 77 Shift Solenoid Valve SLT Circuit

CIRCUIT DESCRIPTION
The throttle pressure that is applied to the primary regulator valve (which modulates line pressure) causes the shift solenoid valve SLT, under electronic control, to precisely and minutely modulate and generate line pressure according to the accelerator pedal effort, or engine power output detected. This reduces the fluctuation of line pressure and provides smooth shifting characteristics. Upon receiving the throttle valve opening angle signal, ECM controls the line pressure by sending a predetermined duty ratio to the shift solenoid valve SLT located in the valve body, activating the solenoid valve, modulating the line pressure, and generating throttle pressure.





DETECTING CONDITION





WIRING DIAGRAM

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INSPECTION PROCEDURE