P0706

DTC P0706

Circuit Description

The transmission range (TR) switch is located on the selector shaft and informs the transmission control module (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.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0706 Transmission Range (TR) Switch Performance

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 hold lamp will blink.
* 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 Hold Lamp/DTC

* The hold lamp will turn OFF when the malfunction has not occurred after 3 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 P0706 sets, the possible cause of TR switch