Passport 4WD V6-3.2L SOHC (6VD1) (1994)
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Control Module: Description and Operation
DESCRIPTION
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The Transmission Control Module (TCM), based on the predetermined shifting characteristics and Lockup Operating Valve, provides the
optimum shifting control to varying Vehicle running conditions. The following input signals are sent to the TCM: Select Lever position from the
Mode Switch, Running Mode from the Power and Winter Switch, Throttle opening from the Throttle Position Sensor, Vehicle speed from the
Vehicle Speed Sensor and Engine revolution from the Engine Control Module (ECM) are sent to the TCM. After receiving these signals, the
TCM determines the vehicle running condition, and it sends output signals to each Solenoid to control shifting.
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When the Torque Converter Clutch (TCC) Solenoid is engaged, the Lockup Mechanism operates.
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The Shift Solenoid 2.3 and 1.2/3.4 select the Shift Gear position.
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The Force Motor controls the line pressure to improve the feeling of shifting.
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Also, when the TCM detects an abnormal signal from the Transmission or Sensor, it will cause the "CHECK TRANS" Lamp on the Instrument
Panel to flash, to inform the driver of the malfunction.
