Transmission

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, 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. Start the engine.
3. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position, and monitor the OBD status for P0705 in the 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 wire between the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, return to step 2 and recheck.

4. Turn the ignition switch OFF.
5. Inspect the transmission range switch.
Is the switch OK?
YES - With the switch connector disconnected, go to step 6.
NO - Replace the transmission range switch, then go to step 48.

6. Turn the ignition switch ON (II).
7. Measure voltage between transmission range switch connector terminals No. 6 and No. 10.





Is there battery voltage?
YES - Go to step 13.
NO - Go to step 8.

8. Turn the ignition switch OFF.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (22P).
11. Check for continuity between PCM connector terminal C22 and body ground.





Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C22 and the transmission range switch, then go to step 48.
NO - Go to step 12.

12. Check for continuity between transmission range switch connector terminal No. 10 and body ground.





Is there continuity?
YES - Go to step 52.
NO - Repair open in the wire between transmission range switch connector terminal No. 10 and ground (G101), or repair poor ground (G101), then go to step 48.

13. Measure voltage between transmission range switch connector terminals No. 7 and No. 10.





Is there battery voltage?
YES - Go to step 18.
NO - Go to step 14.

14. Turn the ignition switch OFF.
15. Jump the SCS line with the HDS.
16. Disconnect PCM connector C (22P).
17. Check for continuity between PCM connector terminal C21 and body ground.





Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C21 and the transmission range switch, then go to step 48.
NO - Go to step 52.

18. Measure voltage between transmission range switch connector terminals No. 2 and No. 10.





Is there about battery voltage?
YES - Go to step 23.
NO - Go to step

19. Turn the ignition switch OFF.
20. Jump the SCS line with the HDS.
21. Disconnect PCM connector C (22P).
22. 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 48.
NO - Go to step 52.

23. Measure voltage between transmission range switch connector terminals No. 8 and No. 10.





Is there battery voltage?
YES - Go to step 28.
NO - Go to step 24.

24. Turn the ignition switch OFF.
25. Jump the SCS line with the HDS.
26. Disconnect PCM connector C (22P).
27. 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 48.
NO - Go to step 52.

28. Measure voltage between transmission range switch connector terminals No. 3 and No. 10.





Is there battery voltage?
YES-
^ 7-position transmission: Go to step 33.
^ 5-position transmission: Go to step 38.
NO - Go to step 29.

29. Turn the ignition switch OFF.
30. Jump the SCS line with the HDS.
31. Disconnect PCM connector C (22P).
32. 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 48.
NO - Go to step 52.

33. Measure voltage between transmission range switch connector terminals No. 9 and No. 10.





Is there about 5 V?
YES - Go to step 38.
NO - Go to step 34.

34. Turn the ignition switch OFF.
35. Jump the SCS line with the HDS.
36. Disconnect PCM connector C (22P).
37. 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 48.
NO - Go to step 52.

38. Measure voltage between transmission range switch connector terminals No. 5 and No. 10.





Is there battery voltage?
YES - Go to step 43.
NO - Go to step

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 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 48.
NO - Go to step 52.

43. Measure voltage between transmission range switch connector terminals No. 1 and No. 10.





Is there battery voltage?
YES - Go to step 52.
NO - Go to step

44. Turn the ignition switch OFF.
45. Jump the SCS line with the HDS.
46. Disconnect PCM connector C (22P).
47. 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 48.
NO - Go to step 52.

48. Clear the DTC with the HDS.
49. Start the engine.
50. With the brake pedal pressed, move the shift lever through all position. Stop for at least 1 second in each position.
51. Monitor the OBD status for P0705 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 intermittent short to body ground in the wire between the transmission range switch and the PCM, then go to step 1.

52. Update the PCM if it does not have latest software, or substitute a known-good PCM.
53. Start the engine.
54. With the brake pedal pressed, move the shift lever through all position. Stop for at least 1 second in each position.
55. Monitor the OBD status for P0705 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 53. If the PCM was substituted, check for intermittent short to body ground in the wire between the transmission range switch and the PCM, then go to step 1 and recheck. If the screen indicates NOT COMPLETED, go to step 53.