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. Clear the DTC with the HDS.
2. Start the engine.
3. With the brake pedal pressed, move the shift lever through all positions, stopping for at least 1 second in each position.
4. Monitor the OBD STATUS for P0705 in the DTCs MENU with the HDS.
Does the screen indicate FAILED?
YES - Go to step 5.
NO - If the screen indicates PASSED, 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 screen indicates NOT COMPLETED, return to step 3 and recheck.
5. Turn the ignition switch OFF.
6. Inspect the transmission range switch.
Is the switch OK?
YES - Disconnect the transmission range switch connector, then go to step 7.
NO - Replace the transmission range switch, then go to step 40.
7. Turn the ignition switch ON (II).
8. Measure voltage between PCM connector terminals D13 and A3 or B15.
Is there battery voltage?
YES - Go to step 15.
NO - Go to step 9.
9. Turn the ignition switch OFF.
10. Jump the SCS line with the HDS.
11. Disconnect PCM connector D (17P).
12. Check for continuity between PCM connector terminal D13 and body ground.
Is there continuity?
YES - Repair a short to body ground in the wire between PCM connector terminal D13 and the transmission range switch, then go to step 40.
NO - Go to step 13.
13. Disconnect PCM connectors A (31P) and B (24P).
14. Check for continuity between transmission range switch connector terminals A3 and body ground, and between B15 and body ground.
Is there continuity?
YES - Go to step 46.
NO - Repair an open in the wire between PCM connector terminals A3, B15, and ground (G101, G102), or repair a poor ground (G101, G102), then go to step 40.
15. Measure voltage between PCM connector terminals D16 and A3 or B15, in all positions other than R.
Is there battery voltage?
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 D16 and body ground.
Is there continuity?
YES - Repair a short to body ground in the wire between PCM connector terminal D16 and the transmission range switch, then go to step 40.
NO - Go to step 46.
20. Measure voltage between PCM connector terminals B23 and A3 or B15, in all positions other than N.
Is there battery voltage?
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 B (24P).
24. Check for continuity between PCM connector terminal B23 and body ground.
Is there continuity?
YES - Repair a short to body ground in the wire between PCM connector terminal B23 and the transmission range switch, then go to step 40.
NO - Go to step 46.
25. Measure voltage between PCM connector terminals C10 and A3 or B15, in all positions other than D.
Is there battery voltage?
YES - Go to step 30.
NO - Go to step 26.
26. Turn the ignition switch OFF.
27. Jump the SCS line with the HDS.
28. Disconnect PCM connector C (22P).
29. Check for continuity between PCM connector terminal C10 and body ground.
Is there continuity?
YES - Repair a short to body ground in the wire between PCM connector terminal C10 and the transmission range switch, then go to step 40.
NO - Go to step 46.
30. Measure voltage between PCM connector terminals C18 and A3 or B15, in all positions other than D3.
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 C18 and body ground.
Is there continuity?
YES - Repair a short to body ground in the wire between PCM connector terminal C18 and the transmission range switch, then go to step 40.
NO - Go to step 46.
35. Measure voltage between PCM connector terminals C19 and A3 or B15, in all positions other than D and D3.
Is there battery voltage?
YES - Go to step 46.
NO - Go to step 36.
36. Turn the ignition switch OFF.
37. Jump the SCS line with the HDS.
38. Disconnect PCM connector C (22P).
39. Check for continuity between PCM connector terminal C19 and body ground.
Is there continuity?
YES - Repair a short to body ground in the wire between PCM connector terminal C19 and the transmission range switch, then go to step 40.
NO - Go to step 46.
40. Reconnect all connectors.
41. Turn the ignition switch ON (II).
42. Clear the DTC with the HDS.
43. With the brake pedal pressed, move the shift lever through all position. Stop for at least 1 second in each position.
44. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0705 indicated?
YES - Check for poor connections or loose terminals at the transmission range switch and the PCM, then go to step 1.
NO - Go to step 45.
45. Monitor the OBD STATUS for P0705 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 6 and recheck.
46. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
47. With the brake pedal pressed, move the shift lever through all position. Stop for at least 1 second in each position.
48. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0705 indicated?
YES - Check for poor connections or loose terminals at the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 47. If the PCM was substituted, go to step 1.
NO - Go to step 49.
49. Monitor the OBD STATUS for P0705 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 6 and recheck.