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7A2-156 TRANSMISSION CONTROL SYSTEM (JR405E) Gearshift Control & Shift Map Selection The TCM commands each shift solenoid valve based °C (50°F), gearshift from the 3rd to the 4th is inhibited. Shift Map The TCM selects either of the following shift map High Temperature Mode Condition for setting the high temperature mode shift • Transmission fluid temperature is more than 122 °C (252 °F) for 10 seconds. Condition for canceling the high temperature mode shift • Transmission fluid temperature is less than 115 °C (239 °F) for 10 seconds Notice: High temperature mode may be set with 3rd Start Mode Condition for setting the 3rd start mode shift map; • 3rd start switch is pressed • Vehicle speed is less than 11 km/h (7 MPH) • Transmission fluid is less than 115 °C (239°F) • Accelerator pedal position is less than 8% • Selector lever is D range Condition for canceling the 3rd start mode shift map; • 3rd start switch is pressed again • Vehicle speed is more than 34 km/h (21 MPH) • Selector lever is other than D range 4L Mode Condition for setting the 4L mode shift map; • 4L switch is On • Vehicle speed is more than 5 km/h (3 MPH) Condition for canceling the 4L mode shift map; • 4L switch is On • Vehicle speed is more than 5 km/h (3 MPH) TCM Sensor inputs Input shaft speed (ISS) sensor Output shaft speed (OSS) sensor Transmission fluid temperature (TFT) sensor Accelerator pedal position signal (via ECM) Engine speed signal (via ECM) Switch inputs Transmission range (TR) switch 3rd start switch Brake pedal switch 4WD low gear signal (via TCCM) Solenoid valve outputs Low & reverse brake solenoid valve Lamp control outputs Power drive lamp OFF ON OFF ON OFF OFF Low Priority Shift map 3rd start lamp Power drive lamp High temperature mode 3rd start mode 4L mode Down slope mode when Down slope mode when Power drive mode Up slope mode Normal mode High |