DTC Troubleshooting
DTC TroubleshootingDTC 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. 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 HDS 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 to LOCK (0).
5. Inspect the transmission range switch.
Is the switch OK?
YES - Connect the switch, connector, then go to step 6.
NO - Replace the transmission range switch, then go to step 45.
6. Turn the ignition switch to ON (II).
7. Measure the voltage between PCM connector terminals D13 and A3 or B15, in all positions other than P.
Is there battery voltage?
YES - Go to step 14.
NO - Go to step 8.
8. Turn the ignition switch to LOCK (0).
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector D (17P).
11. Check for continuity between PCM connector terminal D13 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal D13 and the transmission range switch, then go to step 45.
NO - Go to step 12.
12. Disconnect PCM connectors A (31P) and B (24P).
13. Check for continuity between PCM connector terminals A3 and body ground, and between B15 and body ground.
Is there continuity?
YES - Go to step 39.
NO - Repair open in the wires between PCM connector terminals A3, B15, and ground (G101, G102), or repair poor ground (G101, G102), then go to step 45.
14. Measure the voltage between PCM connector terminals D16 and A3 or B15, in all positions other than R.
Is there battery voltage?
YES - Go to step 19.
NO - Go to step 15.
15. Turn the ignition switch to LOCK (0).
16. Jump the SCS line with the HDS.
17. Disconnect PCM connector D (17P).
18. Check for continuity between PCM connector terminal D16 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal D16 and the transmission range switch, then go to step 45.
NO - Go to step 39.
19. Measure the voltage between PCM connector terminals B23 and A3 or B15, in all positions other than N.
Is there battery voltage?
YES - Go to step 24.
NO - Go to step 20.
20. Turn the ignition switch to LOCK (0).
21. Jump the SCS line with the HDS.
22. Disconnect PCM connector B (24P).
23. Check for continuity between PCM connector terminal B23 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal B23 and the transmission range switch, then go to step 45.
NO - Go to step 39.
24. Measure the voltage between PCM connector terminals C10 and A3 or B15, in all positions other than D.
Is there battery voltage?
YES - Go to step 29.
NO - Go to step 25.
25. Turn the ignition switch to LOCK (0).
26. Jump the SCS line with the HDS.
27. Disconnect PCM connector C (22P).
28. Check for continuity between PCM connector terminal C10 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal C10 and the transmission range switch, then go to step 45.
NO - Go to step 39.
29. Measure the voltage between PCM connector terminals C18 and A3 or B15, in all positions other than D3.
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 C18 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal C18 and the transmission range switch, then go to step 45.
NO - Go to step 39.
34. Measure the 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 40.
NO - Go to step 35.
35. Turn the ignition switch to LOCK (0).
36. Jump the SCS line with the HDS.
37. Disconnect PCM connector C (22P).
38. Check for continuity between PCM connector terminal C19 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal C19 and the transmission range switch, then go to step 45.
NO - Go to step 39.
39. Reconnect all connectors.
40. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
41. Start the engine.
42. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.
43. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0705 indicated?
YES - If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1.
NO - Go to step 44.
44. Monitor the OBD STATUS for P0705 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS 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 on step 43, go to the indicated DTC's troubleshooting.
NO - Check for poor connections and loose terminals at the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, return to step 40 and recheck.
45. Clear the DTC with the HDS.
46. Start the engine.
47. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.
48. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0705 indicated?
YES - Check for poor connections and loose terminals at the transmission range switch and the PCM, then return to step 47 and recheck.
NO - Go to step 49.
49. Monitor the OBD STATUS for P0705 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated on step 48, go to the indicated DTC's troubleshooting.
NO - Check for poor connections and loose terminals at the transmission range switch and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 46 and recheck.