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Home >> Infiniti >> 2007 >> FX45 >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> A/T Control System >> TCM Function >> Control System Outline
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Control System Outline

The automatic transmission senses vehicle operating conditions through various sensors or signals. It always controls the optimum shift position and reduces shifting and lock-up shocks.

TCM SENSORS SIGNALS ACTUATORS REFERENCE CHART

SENSORS (or SIGNALS) โ†’ TCM โ†’ ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Manual mode switch signal
Stop lamp switch signal
Turbine revolution sensor
ATF pressure switch
Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
Duet-EA control
CAN system
Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Low coast brake solenoid valve
Torque converter clutch solenoid valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay