DTC Troubleshooting
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.
1. Turn the ignition switch 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 screen indicate FAILED?
YES - Go to step 6.
NO - 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 screen indicates NOT COMPLETED, go to step 3.
6. Turn the ignition switch OFF.
7. Inspect the transmission range switch.
Is the switch OK?
YES - Go to step 8.
NO - Replace the transmission range switch, then go to step 53.
8. Turn the ignition switch ON (II).
9. Shift to any position other than P.
10. Measure the voltage between PCM connector terminals D13 and A3.
Is there battery voltage?
YES - Go to step 17.
NO - Go to step 11.
11. Turn the ignition switch OFF.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector D (17P).
14. Check for continuity between PCM connector terminal D13 and body ground.
Is there continuity?
YES - Repair short body ground in the wire between PCM connector terminal D13 and the transmission range switch, then go to step 53.
NO - Go to step 15.
15. Disconnect PCM connectors A (31P) and B (24P).
16. Check for continuity between PCM connector terminal A3 and body ground, and between PCM connector terminal B15 and body ground.
Is there continuity?
YES - Go to step 60.
NO - Repair open in the wire between PCM connector terminals A3, B15, and ground (G101), or repair poor ground (G101), then go to step 53.
17. Shift to any position other than R.
18. Measure the voltage between PCM connector terminals D16 and A3.
Is there battery voltage?
YES - Go to step 23.
NO - Go to step 19.
19. Turn the ignition switch OFF.
20. Jump the SCS line with the HDS.
21. Disconnect PCM connector D (17P).
22. Check for continuity between PCM connector terminal D16 and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal D16 and the transmission range switch, then go to step 53.
NO - Go to step 60.
23. Shift to any position other than N.
24. Measure the voltage between PCM connector terminals B23 and A3.
Is there battery voltage?
YES - Go to step 29.
NO - Go to step 25.
25. Turn the ignition switch OFF.
26. Jump the SCS line with the HDS.
27. Disconnect PCM connector B (24P).
28. Check for continuity between PCM connector terminal B23 and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal B23 and the transmission range switch, then go to step 53.
NO - Go to step 61).
29. Shift to any position other than D.
30. Measure the voltage between PCM connector terminals C10 and A3.
Is there battery voltage?
YES - Go to step 35.
NO - Go to step 31.
31. Turn the ignition switch OFF.
32. Jump the SCS line with the HDS.
33. Disconnect PCM connector C (22P).
34. Check for continuity between PCM connector terminal C10 and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C10 and the transmission range switch, then go to step 53.
NO - Go to step 60.
35. Shift to any position other than L.
36. Measure the voltage between PCM connector terminals C18 and A3.
Is there battery voltage?
YES - Go to step 41.
NO - Go to step 37.
37. Turn the ignition switch OFF.
38. Jump the SCS line with the HDS.
39. Disconnect PCM Connector C (22P).
40. 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 8 and the transmission range switch, then go to step 53.
NO - Go to step 60.
41. Shift to any position other than P, R, or N.
42. Measure the voltage between PCM connector terminals C21 and A3.
Is there battery voltage?
YES - Go to step 47.
NO - Go to step 43.
43. Turn the ignition switch OFF.
44. Jump the SCS line with the HDS.
45. Disconnect PCM connector C (22P).
46. 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 53.
NO - Go to step 60.
47. Shift to any position other than D or L.
48. Measure the voltage between PCM connector terminals C19 and A3.
Is there battery voltage?
YES - Go to step 60.
NO - Go to step 49.
49. Turn the ignition switch OFF.
50. Jump the SCS line with the HDS.
51. Disconnect PCM connector C (22P).
52. Check for continuity between PCM connector terminal C19 and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C19 and the transmission range switch, then go to step 53.
NO - Go to step 60.
53. Reconnect all connectors.
54. Turn the ignition switch ON (II).
55. Clear the DTC with the HDS.
56. Start the engine.
57. With the brake pedal pressed, move the shift lever through all position. Stop for at least 1 second in each position.
58. 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, then go to step 1.
NO - Go to step 59.
59. Monitor the OBD STATUS for P0705 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated in step 58, go to the indicated DTC's troubleshooting.
NO - If the screen 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 screen indicates NOT COMPLETED, go to step 56.
60. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
61. Start the engine.
62. With the brake pedal pressed, move the shift lever through all position. Stop for at least 1 second in each position.
63. 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, then go to step 61. If the PCM was substituted, 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 screen 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 in step 63, go to the indicated DTC's troubleshooting.
NO - If the screen 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, then go to step 1. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 61.