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Manual Transmission System Description
Overview
The manual transmission employs a parallel dual axes type gear train with mainshaft and countershaft, and a full time engagement type for forward side gears and reverse idler select slide type for reverse side gears. Also, 1st and 2nd gear and reverse gear are integrated on the mainshaft, and final gear is integrated on the countershaft. Operation
1st speed
Power is transmitted from a mainshaft to a differential gear via a main 1st gear, a counter 1st gear, a countershaft, a final driven gear during gear train operation 1st speed. 2nd speed
Power is transmitted from a mainshaft to a differential gear via a main 2nd gear, a counter 2nd gear, a countershaft, a final driven gear during gear train operation 2nd speed 3rd speed
Power is transmitted from a mainshaft to a differential gear via a main 3rd gear, a counter 3rd gear, a countershaft, a final driven gear during gear train operation 3rd speed. 4th speed
Power is transmitted from a mainshaft to a differential gear via a main 4th gear, a counter 4th gear, a countershaft, a final driven gear during gear train operation 4th speed. 5th speed
Power is transmitted from a mainshaft to a differential gear via a main 5th gear, a counter 5th gear, a countershaft, a final driven gear during gear train operation 5th speed. 6th speed
Power is transmitted from a mainshaft to a differential gear via a main 6th gear, a counter 6th gear, a countershaft, a final driven gear during gear train operation 6th speed. Reverse
Power is transmitted from a mainshaft to a differential gear via a reverse drive gear, a reverse driven gear, a counter reverse gear, a countershaft, a final driven gear during gear train operation reverse. Reverse Lockout System (L4 engine)
At vehicle speeds of 12 mph (20 km/h) or more, the PCM, which monitors the signals from the output shaft (countershaft) speed sensor, activates the reverse lockout solenoid, which pushes select lock cam into the locked position. As a result, the select lever cannot rotate to the reverse select position, making it impossible to engage reverse gear. As the vehicle speed drops to 9 mph (15 km/h) or less, the PCM turns off the reverse lockout solenoid. The select lock return spring pulls back select lock cam, enabling the select lever to move freely so reverse gear can be selected.
Reverse Lockout System (V6 engine)
At a vehicle speed of 12 mph (20 km/h) or more, the PCM receives a signal from the output shaft (countershaft) speed sensor and activates the reverse lockout solenoid, which pushes the select lock cam and select lock pin into the locked position. As a result, the interlock can not rotate to the reverse select position, making it impossible to engage reverse gear. As the vehicle speeds drop to 9 mph (15 km/h) or less, the signal from the output shaft (countershaft) speed sensor is interrupted, the PCM turns off the reverse lockout solenoid. The return spring pulls back the select lock pin, enabling the interlock to move freely so reverse gear can be selected.
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