Transmission Range (TR) Sensor

DESCRIPTION
The powertrain control module sends a voltage signal to the transmission range (TR) sensor. The TR sensor incorporates a series of step down resistors which act as a voltage divider. The Powertrain Control Module (PCM) monitors this voltage which corresponds to the position of the transaxle range selector lever (P, R, N, D, 2, 1). The TR sensor is located on the top of the transaxle. The TR sensor also contains the neutral/start, and backup lamp circuits. The TR sensor determines desired gear and electronic pressure control (EPC) pressure.

SYMPTOMS
Harsh engagements and firm shift feel. Engine may not crank. May downshift to a lower gear. 2nd or 3rd gear operation. Transaxle not indicating the proper gear. No 4th gear operation, no manual 1st gear.

DTC's
P0707: TR Circuit Below Minimum Voltage-Shorted
P0708: TR Circuit Above Maximum Voltage-Open
P1705: TR Not in PARK