P, R, N, D Position Switch

The P, R, N, D position switch is located within the Mechatronic valve block in the transmission. The switch is operated by movement of the selector lever to the P, R, N or D positions via the selector cable, which is connected between the selector lever and the transmission selector shaft.

The switch is electrically connected to the transmission control module (TCM), which outputs a common power supply to each of the four switch contacts. This power supply is also used by the two speed sensors and the fluid temperature sensor in the transmission. Each of the four switch contacts have a separate output to the transmission control module (TCM), which enables the transmission control module (TCM) to detect the position of the selector lever.