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

Steps 1-12: