DTC Troubleshooting
DTC Troubleshooting: P0706 (6)
DTC P0706: Open in Transmission Range Switch Circuit
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information. How To Troubleshoot A/T Systems (A/T)
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Block the rear wheels and 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.
4. Start the engine, disable the VSA by pressing the VSA OFF switch (if equipped), run the vehicle with the shift lever in D until the vehicle speed reaches 25 mph (40 km/h), then slow down and stop the wheels.
5. Monitor the OBD STATUS for P0706 in the DTCs MENU with the HDS.
Does the HDS indicate FAILED?
YES - Go to step 6.
NO - If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals between the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, go to step 4.
6. Turn the ignition switch to LOCK (0).
7. Inspect the transmission range switch. Testing and Inspection
Is the switch OK?
YES - Go to step 8.
NO - Replace the transmission range switch, Service and Repair then go to step 24.
8. Adjust the shift cable. Adjustments
9. Turn the ignition switch to ON (II).
10. Clear the DTC with the HDS.
11. Start the engine, disable the VSA by pressing the VSA OFF switch (if equipped), run the vehicle with the shift lever in D until the vehicle speed reaches 25 mph (40 km/h), then slow down and stop the wheels.
12. Monitor the OBD STATUS for P0706 in the DTCs MENU with the HDS.
Does the HDS indicate FAILED?
YES - Go to step 13.
NO - If the HDS indicates PASSED, troubleshooting is complete. If the HDS indicates NOT COMPLETED, go to step 11.
13. Shift to D, and check the Forward Switch (ATPFWD) and A/T D in the Data List with the HDS.
Are Forward Switch (ATPFWD) and A/T D ON?
YES - Go to step 14.
NO - Go to step 16.
14. Shift to D3, and check the Forward Switch (ATPFWD) and A/T D3 in the Data List with the HDS.
Are Forward Switch (ATPFWD) and A/T D3 ON?
YES - Go to step 15.
NO - Go to step 16.
15. Shift to 2, and check the Forward Switch (ATPFWD) and A/T 2-1 in the Data List with the HDS.
Are Forward Switch (ATPFWD) and A/T 2-1 ON?
YES - Go to step 16.
NO - Go to step 30.
16. Turn the ignition switch to LOCK (0).
17. Disconnect the transmission range switch connector.
18. Check for continuity between transmission range switch connector terminal No. 10 and body ground.
Is there continuity?
YES - Go to step 19.
NO - Repair open in the wire between the transmission range switch and body ground (G101), or repair poor body ground (G101), then go to step 24.
19. Turn the ignition switch to ON (II).
20. Measure the voltage between transmission range switch connector terminals No. 5 and No. 10.
Is there about battery voltage?
YES - Go to step 21.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal B28, then go to step 24.
21. Measure the voltage between transmission range switch connector terminals No. 8 and No. 10.
Is there about battery voltage?
YES - Go to step 22.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal B21, then go to step 24.
22. Measure the voltage between transmission range switch connector terminals No. 3 and No. 10.
Is there about battery voltage?
YES - Go to step 23.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal B15, then go to step 24.
23. Measure the voltage between transmission range switch connector terminals No. 9 and No. 10.
Is there about battery voltage?
YES - Go to step 30.
NO - Repair open in the wire between the transmission range switch and PCM connector terminal B16, then go to step 24.
24. Reconnect all connectors.
25. Turn the ignition switch to ON (II).
26. Clear the DTC with the HDS.
27. Start the engine, disable the VSA by pressing the VSA OFF switch (if equipped), run the vehicle with the shift lever in D until the vehicle speed reaches 30 mph (48 km/h), then slow down and stop the wheels.
28. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0706 indicated?
YES - Check for poor connections or loose terminals between the transmission range switch and the PCM, then go to step 1.
NO - Go to step 29.
29. Monitor the OBD STATUS for P0706 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 28, go to the indicated DTC's troubleshooting.
NO - If the HDS indicates FAILED, check for poor connections or loose terminals between the transmission range switch and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 27.
30. Reconnect all connectors.
31. Update the PCM if it does not have the latest software, ECM/PCM Update (A/T) or substitute a known-good PCM. Initial Inspection and Diagnostic Overview
32. Start the engine, disable the VSA by pressing the VSA OFF switch (if equipped), run the vehicle with the shift lever in D until the vehicle speed reaches 30 mph (48 km/h), then slow down and stop the wheels.
33. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0706 indicated?
YES - Check for poor connections or loose terminals between the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, Initial Inspection and Diagnostic Overview then go to step 32. If the PCM was substituted, go to step 1.
NO - Go to step 34.
34. Monitor the OBD STATUS for P0706 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. Service and Repair If any other Temporary DTCs or DTCs were indicated in step 33, go to the indicated DTC's troubleshooting.
NO - If the HDS indicates FAILED, check for poor connections or loose terminals between the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, Initial Inspection and Diagnostic Overview then go to step 32. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 32.