Transmission Operation and Shift Scheduling
TRANSMISSION OPERATION AND SHIFT SCHEDULINGThe transmission covered has unique shift schedules depending on the temperature of the transmission oil. The transmission oil temperature has a decisive effect on the shift quality of the transmission. The shift schedule is modified to extend the life of the transmission while operating under extreme conditions and to improve driver comfort by modifying shift schedules.
The transmission oil temperature is measured with a Temperature Sensor on the NAG1 transmission. The Temperature Sensor is an integral component of the Transmission Solenoid assembly. If the Temperature Sensor is causing a problem, a DTC will be set in the TCM.
The Transmission Temperature Sensor is wired in series with the Park /Neutral (P/N) switch. The P/N switch is also located in the transmission. The transmission temperature is only read by the TCM when the P/N switch closes while in the R, D position. When the shifter lever is in the park or neutral position, the P/N switch opens and the temperature being displayed is Engine temperature.
AutoStick Feature (If equipped)
This feature allows the driver to manually shift the transaxle when the shift lever is moved sideways to the (+ / -) in position D to adjust the shift range.