DTC Troubleshooting

DTC Troubleshooting: P0705 (5)

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

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

- 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. Start the engine.

4. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.

5. Monitor the OBD STATUS for P0705 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 intermittent short to body ground in the wires 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. Transmission Range Switch Test (A/T)

Is the transmission range switch OK?
YES - Go to step 8.

NO - Replace the transmission range switch, Service and Repair then go to step 58.


8. Turn the ignition switch to ON (II).

9. Shift to any position other than P.

10. Measure the voltage between PCM connector terminals D6 and A9.

Is there battery voltage?
YES - Go to step 17.

NO - Go to step 11.






11. Turn the ignition switch to LOCK (0).

12. Jump the SCS line with the HDS.

13. Disconnect PCM connector D (17P).

14. Check for continuity between PCM connector terminal D6 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal D6 and the transmission range switch, then go to step 58.

NO - Go to step 15.






15. Disconnect PCM connector A (31P).

16. Check for continuity between PCM connector terminal A8 and body ground, and between PCM connector terminal A9 and body ground.

Is there continuity?
YES - Go to step 65.

NO - Repair open in the wire between PCM connector terminals A8, A9, and ground (G101), or repair poor ground (G101), then go to step 58.






17. Shift to any position other than R.

18. Measure the voltage between PCM connector terminals D5 and A9.

Is there battery voltage?
YES - Go to step 23.

NO - Go to step 19.






19. Turn the ignition switch to LOCK (0).

20. Jump the SCS line with the HDS.

21. Disconnect PCM connector D (17P).

22. Check for continuity between PCM connector terminal D5 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal D5 and the transmission range switch, then go to step 58.

NO - Go to step 65.






23. Measure the voltage between PCM connector terminals C12 and A9.

Is there battery voltage?
YES - Go to step 28.

NO - Go to step 24.






24. Turn the ignition switch to LOCK (0).

25. Jump the SCS line with the HDS.

26. Disconnect PCM connector C (22P).

27. Check for continuity between PCM connector terminal C12 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C12 and the transmission range switch, then go to step 58.

NO - Go to step 65.






28. Shift to any position other than N.

29. Measure the voltage between PCM connector terminals C20 and A9.

Is there battery voltage?
YES - Go to step 34.

NO - Go to step 30.






30. Turn the ignition switch to LOCK (0).

31. Jump the SCS line with the HDS.

32. Disconnect PCM connector C (22P).

33. Check for continuity between PCM connector terminal C20 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C20 and the transmission range switch, then go to step 58.

NO - Go to step 65.






34. Shift to any position other than D.

35. Measure the voltage between PCM connector terminals C17 and A9.

Is there battery voltage?
YES - Go to step 40.

NO - Go to step 36.






36. Turn the ignition switch to LOCK (0).

37. Jump the SCS line with the HDS.

38. Disconnect PCM connector C (22P).

39. Check for continuity between PCM connector terminal C17 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C17 and the transmission range switch, then go to step 58.

NO - Go to step 65.






40. Shift to any position other than 2.

41. Measure the voltage between PCM connector terminals C11 and A9.

Is there battery voltage?
YES - Go to step 46.

NO - Go to step 42.






42. Turn the ignition switch to LOCK (0).

43. Jump the SCS line with the HDS.

44. Disconnect PCM connector C (22P).

45. Check for continuity between PCM connector terminal C11 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C11 and the transmission range switch, then go to step 58.

NO - Go to step 65.






46. Shift to any position other than 1.

47. Measure the voltage between PCM connector terminals C9 and A9.

Is there battery voltage?
YES - Go to step 52.

NO - Go to step 48.






48. Turn the ignition switch to LOCK (0).

49. Jump the SCS line with the HDS.

50. Disconnect PCM connector C (22P).

51. Check for continuity between PCM connector terminal C9 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C9 and the transmission range switch, then go to step 58.

NO - Go to step 65.






52. Shift to any position other than D, 2, and 1.

53. Measure the voltage between PCM connector terminals C18 and A9.

Is there battery voltage?
YES - Go to step 65.

NO - Go to step 54.






54. Turn the ignition switch to LOCK (0).

55. Jump the SCS line with the HDS.

56. Disconnect PCM connector C (22P).

57. Check for continuity between PCM connector terminal C18 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C18 and the transmission range switch, then go to step 58.

NO - Go to step 65.






58. Reconnect all connectors.

59. Turn the ignition switch to ON (II).

60. Clear the DTC with the HDS.

61. Start the engine.

62. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.

63. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0705 indicated?
YES - Check for intermittent short to body ground in the wire between the transmission range switch and the PCM, then go to step 1.

NO - Go to step 64.


64. Monitor the OBD STATUS for P0705 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 63, go to the indicated DTC's troubleshooting.

NO - If the HDS indicates FAILED, check for intermittent short to body ground in the wire between the transmission range switch and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 62.


65. Reconnect all connectors.

66. Update the PCM if it does not have the latest software, ECM/PCM Update or substitute a known-good PCM. Initial Inspection and Diagnostic Overview

67. Start the engine.

68. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.

69. Check for DTCs with the HDS.

Is DTC P0705 indicated?
YES - Check for intermittent short to body ground in the wire 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 67. If the PCM was substituted, go to step 1.

NO - Go to step 70.


70. Monitor the OBD STATUS for P0705 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 69, go to the indicated DTC's troubleshooting.

NO - If the HDS indicates FAILED, check for intermittent short to body ground in the wire 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 68. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 68.