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Input/Output Signal of TCM

TCM SIGNAL INPUT/OUTPUT CHART

Control item

Line pressure control

Vehicle speed control

Shift control

Lock up control

Engine brake control

Fail-safe function (⁽³⁾)

Self-diagnostics function

Input

Accelerator pedal position signal (⁽⁵⁾)

X

X

X

X

X

X

X

Vehicle speed sensor A/T (revolution sensor)

X

X

X

X

X

X

X

Vehicle speed sensor MTR (⁽¹⁾) (⁽⁵⁾)

X

Closed throttle position signal (⁽⁵⁾)

X (⁽²⁾)

X

X

X

X (⁽⁴⁾)

Wide open throttle position signal (⁽⁵⁾)

X

X (⁽⁴⁾)

Turbine revolution sensor 1

X

X

X

X

X

Turbine revolution sensor 2 (for 4th speed only)

X

X

X

X

X

Engine speed signals (⁽⁵⁾)

X

X

X

X

X

X

X

Stop lamp switch signal (⁽⁵⁾)

X

X

X

X (⁽⁴⁾)

A/T fluid temperature sensors 1, 2

X

X

X

X

X

X

ASCD or ICC sensor integrated unit

Operation signal (⁽⁵⁾)

X

X

X

Overdrive cancel signal (⁽⁵⁾)

X

Output

Direct clutch solenoid (ATF pressure switch 5)

X

X

X

X

Input clutch solenoid (ATF pressure switch 3)

X

X

X

X

High and low reverse clutch solenoid (ATF pressure switch 6)

X

X

X

X

Front brake solenoid (ATF pressure switch 1)

X

X

X

X

Low coast brake solenoid (ATF pressure switch 2)

X

X

X

X

X

Line pressure solenoid

X

X

X

X

X

X

X

TCC solenoid

X

X

X

Self-diagnostics table (⁽⁶⁾)

X

Starter relay

X

X

⁽¹⁾	Spare for vehicle speed sensor. A/T (revolution sensor)

⁽²⁾	Spare for accelerator pedal position signal

⁽³⁾	If these input and output signals are different, the TCM triggers the fail-safe function.

⁽⁴⁾	Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kind of error.

⁽⁵⁾	Input by CAN communications.

⁽⁶⁾	Output by CAN communications.