DTC Troubleshooting
DTC P0706: Open in Transmission Range Switch CircuitNOTE:
^ Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
^ This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
1. Clear the DTC with the HDS.
2. 4WD model: Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
2WD model: Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle.
3. Start the engine, and turn the VSA off (the VSA indicator comes on). Run the engine in D until the vehicle speed reaches 30 mph (48 km/h), then slow down to a stop.
4. Turn the ignition switch to LOCK (0). Repeat step 3, then go to step 5.
5. Monitor the OBD STATUS for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate FAILED?
Yes - Go to step 6.
No - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, return to step 3 and recheck.
6. Turn the ignition switch to LOCK (0).
7. Inspect the transmission range switch.
Is the switch OK?
Yes - Go to step 8.
No - Replace the transmission range switch, then go to step 34.
8. Adjust the shift cable.
9. Clear the DTC with the HDS.
10. Start the engine, and turn the VSA off (the VSA indicator comes on). Run the engine in D until the vehicle speed reaches 30 mph (48 km/h), then slow down to a stop.
11. Turn the ignition switch to LOCK (0). Repeat step 10, then go to step 12.
12. Monitor the OBD STATUS for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate FAILED?
Yes - Go to step 13.
No - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, return to step 10 and recheck.
13. Shift to D, and check the ATP FWD and ATP D inputs with the HDS in the A/T data list.
Is ATP FWD and ATP D ON?
Yes - Go to step 14.
No - Go to step 20.
14. Shift to 2, and check the ATF FWD and ATP 2 inputs with the HDS in the A/T data list.
Is ATP FWD and ATP 2 ON?
Yes - Go to step 15.
No - Go to step 20.
15. Shift to 1, and check the ATF FWD and ATP 1 inputs with the HDS in the A/T data list.
Is ATP FWD and ATP 1 ON?
Yes - Go to step 16.
No - Go to step 20.
16. Clear the DTC with the HDS.
17. Start the engine, and turn the VSA off (the light on the VSA OFF switch comes on). Run the engine in D until the vehicle speed reaches 30 mph (48 km/h), then slow down to a stop.
18. Turn the ignition switch to LOCK (0). Repeat step 17, then go to step 19.
19. Monitor the OBD STATUS for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate FAILED?
Yes - Go to step 20.
No - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, return to step 17 and recheck.
20. Turn the ignition switch to LOCK (0).
21. Disconnect the transmission range switch connector.
22. Check for continuity between transmission range switch connector terminal No. 10 and body ground.
Is there continuity?
Yes - Go to step 23.
No - Repair open in the wire between the transmission range switch and ground (G101), or repair poor ground (G101), then go to step 33.
23. Turn the ignition switch to ON (II).
24. Measure the voltage between transmission range switch connector terminals No. 5 and No. 10.
Is there battery voltage?
Yes - Go to step 25.
No - Repair open or a poor connection in the wire between the transmission range switch and PCM connector terminal B28, then go to step 33.
25. Measure the voltage between transmission range switch connector terminals No. 8 and No. 10.
Is there battery voltage?
Yes - Go to step 26.
No - Repair open or a poor connection in the wire between the transmission range switch and PCM connector terminal B21, then go to step 33.
26. Measure the voltage between transmission range switch connector terminals No. 3 and No. 10.
Is there battery voltage?
Yes - Go to step 27.
No - Repair open or a poor connection in the wire between the transmission range switch and PCM connector terminal B16, then go to step 33.
27. Measure the voltage between transmission range switch connector terminals No. 9 and No. 10.
Is there battery voltage?
Yes - Connect the transmission range switch connector, then go to step 28.
No - Repair open or a poor connection in the wire between the transmission range switch and PCM connector terminal B15, then go to step 33.
28. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
29. Start the engine, and turn the VSA off (the VSA indicator comes on). Run the engine in D until the vehicle speed reaches 30 mph (48 km/h), then slow down to a stop.
30. Turn the ignition switch to LOCK (0). Repeat step 29, then go to step 31.
31. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0706 indicated?
Yes - Check for poor connections and loose terminals at the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, reinstall the original PCM, then go to step 1.
No - Go to step 32.
32. Monitor the OBD STATUS for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
Yes - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other DTCs were indicated on step 31, go to the indicated DTC's troubleshooting.
No - Check for poor connections and loose terminals at the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, reinstall the original PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 29 and recheck.
33. Connect the transmission range switch connector.
34. Clear the DTC with the HDS.
35. Start the engine, and turn the VSA off (the VSA indicator comes on). Run the engine in D until the vehicle speed reaches 30 mph (48 km/h), then slow down to a stop.
36. Turn the ignition switch to LOCK (0). Repeat step 35, then go to step 37.
37. Check for DTC(s) in the DTCs/Freeze Data in Mode Menu with the HDS.
Is DTC P0706 indicated?
Yes - Check for poor connections and loose terminals at the transmission range switch and the PCM, then go to step 1.
No - Go to step 38.
38. Monitor the OBD STATUS for P0706 in the DTCs/Freeze Data in Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
Yes - Troubleshooting is complete. If any other DTCs were indicated on step 37, go to the indicated DTC's troubleshooting.
No - Check for poor connections and loose terminals at the transmission range switch and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 35 and recheck.