DTC P0706: Transmission Range Switch (Open)
General Description
Transmission range switch contact point input matrix:
| Shift lever position |
Input per switch | ||||||||
| ATP P | ATP R* 1 ATP-R* 2 |
ATP N | ATP D | ATP-S* 1 ATP B* 2 |
ATP FWD |
ATP FWD2 |
ATP RVS |
ATP RVS2 |
|
| P | O | X | X | X | X | X | X | X | X |
| R | X | O | X | X | X | X | X | O | O |
| N | X | X | O | X | X | X | X | X | X |
| D | X | X | X | O | X | O | O | X | X |
| B | X | X | X | X | O | O | O | X | X |
*1:: '14-15
*2:: '17
O: Closed X: Open
The transmission range switch is attached to a control shaft. Operating the shift lever makes the control shaft rotate via the shift cable. The shift position indicator shows which position is selected according to the Low/High signal combinations, which vary based on the control shaft rotational angle. The transmission range switch signal is used to determine forward and reverse. The voltage is high (5 V or 12 V) at the powertrain control module (PCM) input terminal when each transmission range switch position is open, and it is low (0 V) when each switch is closed. If the FWD* 1 (FWD1)* 2 switch is open with the shift lever in D or B, the PCM detects a FWD* 1 (FWD1)* 2 switch open failure and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
| Execution | Continuous |
| Sequence | None |
| Duration | 2.0 seconds or more |
| DTC Type | Two drive cycles, MIL off, shift position indicator blinks |
| OBD Status | PASSED/FAILED/NOT COMPLETED (STILL TESTING) |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [BATTERY VOLTAGE] |
11 V | - |
[ ]: HDS Parameter
Malfunction Threshold
No FWD* 1 (FWD1)* 2 position signal is detected when shift lever in D or B for at least 2.0 seconds.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Transmission range switch ATP FWD line open (includes connector loose connection or disconnection)
- Transmission range switch failure
- PCM internal circuit failure
Confirmation Procedure
Operating Condition
- 1.
Turn the vehicle to the READY TO DRIVE mode.
- 2.
With the brake pedal pressed, place the shift lever in D position for at least 2.0 seconds.
With the HDS
None.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the shift position indicator blinks and a Confirmed DTC and the freeze data are stored. The MIL does not come on.
Conditions for clearing the DTC
The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.