Input/Output Signal Of TCM

INPUT/OUTPUT SIGNAL OF TCM

	Control Item	Function
Input	Park/neutral position (PNP) switch	Detects select lever position and sends a signal to TCM.
	Accelerator pedal position (APP) signal	Detects throttle valve position and sends a signal to TCM.
	Closed throttle position signal	Detects throttle valves fully-closed position and sends a signal from ECM to TCM.
	Wide open throttle position signal	Detects throttle valve position of greater than 1/2 or full throttle and sends a signal from ECM to TCM.
	Engine speed signal	Receives signal from ECM.
	A/T fluid temperature sensor	Detects transmission fluid temperature and sends a signal to TCM.
	Revolution sensor	Detects output shaft RPM and sends a signal to TCM.
	Vehicle speed sensor	Used as an auxiliary vehicle speed sensor. Sends a signal when revolution sensor (installed on transmission) malfunctions.
	Overdrive control switch	Sends a signal, which prohibits a shift to D4 (overdrive) position, to the TCM.
	ASCD control signal	Sends the cruise signal and D4 (overdrive) cancellation signal from ECM to TCM.
	Turbine revolution sensor (power train revolution sensor)	Detects forward clutch drum RPM and sends a signal to TCM.
	Stop lamp switch	Send the lock up release signal to the TCM at time of D4 (lock up).
Output	Shift solenoid valve A/B	Selects shifting point suited to driving conditions in relation to a signal sent from TCM.
	Line pressure solenoid valve	Regulates (or decreases) line pressure suited to driving conditions in relation to a signal sent from TCM.
	Torque converter clutch solenoid valve	Regulates (or decreases) lock up pressure suited to driving conditions in relation to a signal sent from TCM.
	Overrun clutch solenoid valve	Controls an "engine brake" effect suited to driving conditions in relation to a signal sent from TCM.
	O/D OFF indicator lamp	Shows TCM faults, when A/T control components malfunction.