DTC P0706: Open in Transmission Range Switch Circuit: General Description

The transmission range switch is attached to the control shaft. Operating the shift lever makes the control shaft rotate via the shift cable. The A/T gear position indicator indicates which position is selected according to the five Low/High signal combinations which vary based on shift lever position. The control shaft changes the position of the transmission range switch, activates the manual valve, and switches hydraulic pressure to shift the transmission through forward/neutral/reverse. The transmission range switch signal is used to determine the shift schedule. The voltage is 5 V (High) at the transmission control module (TCM) input terminal when each transmission range switch position is open, and it is 0 V (Low) when each switch is closed. If the D switch stays open while the vehicle repeatedly accelerates to a specified vehicle speed and then stops despite being in D position, the TCM detects a malfunction in the transmission range switch (open) and stores a DTC.