Transmission Position Sensor/Switch: Description and Operation

The Transmission Range Sensor (TRS) on the valve body, sends a signal to the TCM on the position of the transaxle manual valve lever. The TCM receives the switch signal and processes the data. The TCM sends the Shift Lever Position (SLP) information to the BCM via the J1850 bus. The BCM then outlines the appropriate shifter position indicator on the instrument cluster.

If a problem arises with the shifter position indicator, consult the following chart for diagnostic information. If the malfunction cannot be corrected using the chart.

To replace the shifter position indicator.