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. 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 lift.
3. Start the engine, and run it in D until the vehicle speed reaches 25 mph (40 km/h). Slow down, and stop the wheels.
4. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 3.
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. Inspect the transmission range switch.
Is the switch OK?
YES - Go to step 7.
NO - Replace the transmission range switch, then go to step 32.
7. Adjust the shift cable.
8. Clear the DTC with the HDS.
9. Shift to D, 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 -
^ Seven-position transmission: Go to step 10.
^ Five-position transmission: Go to step 12.
NO - Go to step 17.
10. Shift to D3, and verify the ATF FWD and ATP D3 inputs with the HDS in the A/T data list.
Are ATP FWD and ATP D3 ON?
YES - Go to step 11.
NO - Go to step 17.
11. Shift to 2, and verify the ATF FWD and ATP 2 inputs with the HDS in the A/T data list.
Are ATP FWD and ATP 2 ON?
YES - Go to step 13.
NO - Go to step 17.
12. Shift to S, and verify the ATF FWD and ATP S inputs with the HDS in the A/T data list.
Are ATP FWD and ATP S ON?
YES - Go to step 13.
NO - Go to step 17.
13. Clear the DTC with the HDS, and turn the ignition switch to LOCK (0).
14. Start the engine, and run it in D until the vehicle speed reaches 25 mph (40 km/h). Slow down, and stop the wheels.
15. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 14.
16. 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 17.
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 14 and recheck.
17. Turn the ignition switch to LOCK (0).
18. Disconnect the transmission range switch connector.
19. Check for continuity between transmission range switch connector terminal No. 10 and body ground.
Is there continuity?
YES - Go to step 20.
NO - Repair open in the wire between the transmission range switch and ground (G101), or repair poor ground (G101), then go to step 32.
20. Turn the ignition switch to ON (II).
21. Measure the voltage between transmission range switch connector terminals No. 5 and. No. 10.
Is there voltage?
YES - Go to step 22.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C18, then go to step 32.
22. Measure the voltage between transmission range switch connector terminals. No. 8 and No. 10.
Is there voltage?
YES -
^ Seven-position transmission: Go to step 23.
^ Five-position transmission: Go to step 25.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C17, then go to step 32.
23. Measure the voltage between transmission range switch connector terminals No. 3 and No. 10.
Is there voltage?
YES - Go to step 24.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C9, then go to step 32.
24. Measure the voltage between transmission range switch connector terminals No. 9 and No. 10.
Is there voltage?
YES - Go to step 26.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C11, then go to step 32.
25. Measure the voltage between transmission range switch connector terminals No. 3 and No. 10.
Is there voltage?
YES - Go to step 26.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal C9, then go to step 32.
26. Connect the transmission range switch connector.
27. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
28. Start the engine, and run it in D until the vehicle speed reaches 30 mph (48 km/h). Slow down, and stop the wheels.
29. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 28.
30. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0706 indicated?
YES - If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1.
NO - Go to step 31.
31. 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 30, 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, go to step 1. If the HDS indicates NOT COMPLETED, return to step 28 and recheck.
32. Connect the transmission range switch connector.
33. Clear the DTC with the HDS.
34. Start the engine, and run it in D until the vehicle speed reaches 30 mph (48 km/h). Slow down, and stop the wheels.
35. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 34.
36. 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, then return to step 34.
NO - Go to step 37.
37. 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 - Troubleshooting is complete. If any other DTCs were indicated on step 36, 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 34 and recheck.