Transmission
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.
^ Information marked with an asterisk (*) applies to the 7-position transmission.
^ Information marked with a double asterisk (**) applies to the 5-position transmission.
1. Clear the DTC with the HDS.
2. Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle on a hoist.
3. Start the engine, run the vehicle in the D position until the vehicle speed reaches 35 mph (56 km/h), then slow down and stop the wheels.
4. Monitor the OBD status for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 5.
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.
5. Turn the ignition switch OFF.
6. Inspect the transmission range switch.
Is the switch OK?
YES - Go to step 7.
NO - Replace the transmission range switch, then go to step 26.
7. Adjust the shift cable.
8. Clear the DTC with the HDS.
9. Turn the ignition switch OFF.
10. Start the engine, run the vehicle in the D position until the vehicle speed reaches 35 mph (56 km/h), then slow down and stop the wheels.
11. Monitor the OBD status for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 12.
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.
12. Clear the DTC with the HDS.
13. Shift to the D position, and verify the ATP FWD and ATP D inputs with the HDS in the A/T data list.
Are ATP FWD and ATP D ON?
YES - Go to step 14.
NO - Go to step 19.
14. Shift to the D3* (S**) position, and verify the ATP FWD and ATP D3* (ATP S**) inputs with the HDS in the A/T data list.
Are ATP FWD and ATP D3* (ATP S**) ON?
YES - Go to step 15.
NO - Go to step 19.
15. Clear the DTC with the HDS.
16. Turn the ignition switch OFF.
17. Start the engine, run the vehicle in the D position until the vehicle speed reaches 35 mph (56 km/h), then slow down and stop the wheels.
18. Monitor the OBD status for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 19.
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.
19. Turn the ignition switch OFF.
20. Disconnect the transmission range switch connector.
21. Check for continuity between transmission range switch connector terminal No. 10 and body ground.
Is there continuity?
YES - Go to step 22.
NO - Repair open in the wire between the transmission range switch and ground (G101), or repair poor ground (G101), then go to step 26.
22. Turn the ignition switch ON (II).
23. Measure voltage between transmission range switch connector terminals No. 5 and No. 10.
Is there battery voltage?
YES - Go to step 24.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C18, then go to step 26.
24. Measure voltage between transmission range switch connector terminals No. 8 and No. 10.
Is there battery voltage?
YES - Go to step 25.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C17, then go to step 26.
25. Measure voltage between transmission range switch connector terminals No. 3 and No. 10.
Is there battery voltage?
YES - Go to step 30.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C9, then go to step 26.
26. Clear the DTC with the HDS.
27. Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle on a hoist.
28. Start the engine, run the vehicle in the D position until the vehicle speed reaches 35 mph (56 km/h), then slow down and stop the wheels.
29. Monitor the OBD status for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Check for poor connections or loose terminals at the transmission range switch and the PCM, then go to step 1.
30. Update the PCM if it does not have latest software, or substitute a known-good PCM.
31. Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle on a hoist.
32. Start the engine, run the vehicle in the D position until the vehicle speed reaches 35 mph (56 km/h), then slow down and stop the wheels.
33. Monitor the OBD status for P0706 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.
NO - If the PCM was updated and screen indicates FAILED, substitute a known-good PCM, then go to step 31. If the PCM was substituted, check for poor connections or loose terminals at the transmission range switch and the PCM, then go to step 1 and recheck. If the screen indicates NOT COMPLETED, go to step 31.