P0705

DTC P0705 Transmission Range Sensor Circuit Malfunction (PENAL Input)





Circuit Description
The Transmission range switch is located on the selector shaft and informs the TCM of the current selector lever position P-R-N-D-3-2-1.
The selector lever position is transmitted to the TCM in encoded form along 4 lines. The encoding is such that malfunctions in the connecting lead are identified.
The TR switch is located on the selector shaft, which is connected to the selector lever via a pull cable. In addition, the TR switch controls the starter interlock, the reverse lights and the selector lever position indicator on the instrument panel.

Conditions for Setting the DTC
- TR switch stuck to closed.
- TR switch wiring harness shortage to ground.
- TR switch wiring harness shortage to power.
- Immediately after the above condition occurs.

Action Taken When the DTC Sets
- The Malfunction Indicator Lamp (MIL) will illuminate.
- The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer.
- Adopt Emergency/ Substitute mode and constant 4th gear.

Conditions for Clearing the MIL/DTC
- The MIL will turn OFF when the malfunction has not occurred after three-ignition cycles.
- A history DTC will clear after 40 consecutive warm up cycles without a fault.
- Using a scan tool can clear history DTCs.

Diagnostic Aids

Steps 1-10:

Steps 10 (continued)-12:

- When DTC P0705 sets, the possible cause of TR switch.





Gear Position and Range Signal Chart.