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7A1-34 CONSTRUCTION AND FUNCTION
MAJOR INPUT/OUTPUT COMPONENT AND THEIR FUNCTIONS Speed sensor Detects output shaft revolution and sends rpm signal to TCM. Turbine sensor Detects input shaft revolution and sends rpm signal to TCM. Engine speed sensor Inputs engine revolution from engine control computer. Brake switch Detects brake pedal operated by the driver and sends signal to Inhibitor switch Detects select lever position and sends signal to TCM. Mode select switch Detects "Power Drive" or "3rd Start" selected by the driver and 4L switch (4WD Only) Inputs 4L mode from transfer control computer. ATF thermo sensor Detects ATF temperature and sends signal to TCM. High clutch oil pressure switch Detects high clutch supply oil pressure and sends signal to 2-4 brake oil pressure switch Detects 2-4 brake supply oil pressure and sends signal to Low & Reverse brake oil pressure switch Detects low & reverse brake supply oil pressure and signal to Throttle position sensor Inputs throttle opening angle from engine control computer. In pu t TCM Judges necessary line pressure, gear shifting point and lock-up Line pressure solenoid Regulates oil pump delivery pressure to the appropriate line Low clutch solenoid Selects appropriate gear shifting position for current driving High clutch solenoid Selects appropriate gear shifting position for current driving 2-4 brake solenoid Selects appropriate gear shifting position for current driving Low & Reverse brake solenoid Selects appropriate gear shifting position for current driving Lock-up solenoid Regulates lock-up pressure to appropriate level for current Mode indicator lamp Indicates POWER DRIVE or 3rd START switch position. Speed meter signal (2WD Only) Outputs vehicle speed to speed meter. A/T OIL TEMP indicator lamp Indicates A/T OIL TEMP indicator lamp in case of high Ou tput CHECK TRANS indicator lamp Indicates CHECK TRANS indicator lamp in case of
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