P0705

DTC P0705: Short in Transmission Range Switch Circuit (Multiple Shift-position Input)

NOTE:
^ Record all freeze data and review General Troubleshooting Information before you troubleshoot.
^ 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. Start the engine.
3. Move the shift lever through all positions, stopping for at least 1 second in each position. Monitor the OBD status for P0705 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 4.
NO - Intermittent failure, the system is OK at this time. Check for an intermittent short in the wires between the transmission range switch and PCM. If the tester indicates NOT COMPLETED, return to step 2 and recheck.

4. Test the transmission range switch.
Is the switch OK?
YES - Go to step 5.
NO - Replace the transmission range switch, then go to step 49.

5. Turn the ignition switch ON (II).
6. Shift to all positions other than P.





7. Measure the voltage between PCM connector terminals D6 and A8 or A9.
Is there about 5 V?
YES - Go to step 14.
NO - Go to step 8.

8. Turn the ignition switch OFF.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector D (17P).





11. Check for continuity between PCM connector terminal D6 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal D6 and the transmission range switch, then go to step 49.
NO - Go to step 12.

12. Disconnect PCM connector A (31P).





13. Check for continuity between PCM connector terminals A8 and body ground, and between A9 and body ground.
Is there continuity?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Repair open in the wire between PCM connector terminals A8, A9, and ground (G101), or repair poor ground (G101), then go to step 49.

14. Shift to all positions other than R.





15. Measure the voltage between PCM connector terminals D5 and A9.
Is there about 5 V?
YES - Go to step 20.
NO - Go to step 16.

16. Turn the ignition switch OFF.
17. Jump the SCS line with the HDS.





18. Disconnect PCM connector D (17P).
19. Check for continuity between PCM connector terminal D5 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal D5 and the transmission range switch, then go to step 49.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





20. Measure the voltage between PCM connector terminals C12 and A9.
Is there about 5 V?
YES - Go to step 25.
NO - Go to step 21.

21. Turn the ignition switch OFF.
22. Jump the SCS line with the HDS.
23. Disconnect PCM connector C (22P).





24. Check for continuity between PCM connector terminal C12 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal C12 and the transmission range switch, then go to step 49.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.

25. Shift to all positions other than N.





26. Measure the voltage between PCM connector terminals C20 and A9.
Is there about 5 V?
YES - Go to step 31.
NO - Go to step 27.

27. Turn the ignition switch OFF.
28. Jump the SCS line with the HDS.
29. Disconnect PCM connector C (22P).





30. Check for continuity between PCM connector terminal C20 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal C20 and the transmission range switch, then go to step 49.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.

31. Shift to all positions other than D.





32. Measure the voltage between PCM connector terminals C17 and A9.
Is there about 5 V?
YES - Go to step 37.
NO - Go to step 33.

33. Turn the ignition switch OFF.
34. Jump the SCS line with the HDS.
35. Disconnect PCM connector C (22P).





36. Check for continuity between PCM connector terminal C17 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal C17 and the transmission range switch, then go to step 49.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.

37. Shift to all positions other than D3.





38. Measure the voltage between PCM connector terminals C9 and A9.
Is there about 5 V?
YES - Go to step 43.
NO - Go to step 39.

39. Turn the ignition switch OFF.
40. Jump the SCS line with the HDS.
41. Disconnect PCM connector C (22P).





42. Check for continuity between PCM connector terminal C9 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal C9 and the transmission range switch, then go to step 49.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.

43. Shift to all positions other than D and D3.





44. Measure the voltage between PCM connector terminals C18 and A9.
Is there about 5 V?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Go to step 45.

45. Turn the ignition switch OFF.
46. Jump the SCS line with the HDS.
47. Disconnect PCM connector C (22P).





48. Check for continuity between PCM connector terminal C18 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal C18 and the transmission range switch, then go to step 49.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.

49. Clear the DTC with the HDS.
50. Move the shift lever through all positions, stopping for at least 1 second in each position. Monitor the OBD status for P0705 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 1 and recheck.