P0705

DTC P0705: Transaxle Range Sensor Circuit Malfunction (PRNDL Input)





Circuit Description
The Transaxle 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
When DTC P0705 sets, the possible cause of TR switch.

Gear Position and Range Signal Chart.





Troubleshooting