P1705
DTC P1705: Short in Transmission Range Switch CircuitULEV Model
NOTE: Record all freeze data and review General Troubleshooting Information before you troubleshoot.
1. Turn the ignition switch ON (II).
2. Observe the A/T gear position indicator, and shift to each position.
Do any indicators stay on when the shift lever is not in that position?
YES- Go to step 4.
NO- Go to step 3.
3. Clear the DTC, test-drive the vehicle, and recheck for DTC P1705.
Does the scan tool or the HDS indicate code P1705?
YES- Review the freeze data. If the freeze data indicates more than one gear position indicator on et one time, go to step 4.
NO- Intermittent failure; wiggle the wire harness and check for an intermittent short to ground.
4. Disconnect the transmission range switch connector.
Do all gear position indicators go out?
YES- Replace the transmission range switch.
NO- Turn the ignition switch OFF, then go to step 5.
5. Test the transmission range switch.
Is the switch OK?
YES- Go to step 6.
NO- Replace the transmission range switch.
6. Connect the transmission range switch connector.
7. Turn the ignition switch ON (II).
8. Shift to all positions other than R.
9. Measure the voltage between TCM connector terminals A17 and A23 or A24.
Is there about 9 V?
YES- Go to step 14.
NO- Go to step 10.
10. Turn the ignition switch OFF.
11. Disconnect TCM connector A (31P).
12. Check for continuity between TCM connector terminal A17 and body ground.
Is there continuity?
YES- Repair short in the wire between TCM connector terminal A17 and transmission range switch or A/T gear position indicator.
NO- Go to step 13.
13. Check for continuity between TCM connector terminals A23 and body ground, and between A24 and body ground.
Is there continuity?
YES- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.
NO- Repair open in the wire between TCM connector terminals A23, A24, and ground (G101), or repair poor ground (G101).
14. Shift to all positions other than D.
15. Measure the voltage between TCM connector terminals A15 and A23 or A24.
Is there about 5 V?
YES- Go to step 19.
NO- Go to step 16.
16. Turn the ignition switch OFF.
17. Disconnect TCM connector A (31P).
18. Check for continuity between TCM connector terminal A15 and body ground.
Is there continuity?
YES- Repair short in the wire between TCM connector terminal A15 and transmission range switch.
NO- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.
19. Shift to all positions other than S.
20. Measure the voltage between TCM connector terminals A16 and A23 or A24.
Is there about 5 V?
YES- Go to step 24.
NO- Go to step 21.
21. Turn the ignition switch OFF.
22. Disconnect TCM connector A (31P).
23. Check for continuity between TCM connector terminal A16 and body ground.
Is there continuity?
YES- Repair short in the wire between TCM connector terminal A16 and transmission range switch.
NO- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.
24. Shift to all positions other than L.
25. Measure the voltage between TCM connector terminals A18 and A23 or A24.
Is there about 5 V?
YES- Go to step 29.
NO- Go to step 26.
26. Turn the ignition switch OFF.
27. Disconnect TCM connector A (31P).
28. Check for continuity between TCM connector terminal A18 and body ground.
Is there continuity?
YES- Repair short in the wire between TCM connector terminal A18 and transmission range switch.
NO- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.
29. Shift to any position other than D and S.
30. Measure the voltage between TCM connector terminals A14 and A23 or A24.
Is there about 5 V?
YES- Go to step 34.
NO- Go to step 31.
31. Turn the ignition switch OFF.
32. Disconnect TCM connector A (31P).
33. Check for continuity between TCM connector terminal A14 and body ground.
Is there continuity?
YES- Repair short in the wire between TCM connector terminal A14 and transmission range switch.
NO- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.
34. Shift to all positions other than P and N.
35. Measure the voltage between TCM connector terminals A19 and A23 or A24.
Is there about 5 V?
YES- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM..
NO- Go to step 36.
36. Turn the ignition switch OFF.
37. Disconnect TCM connector A (31P).
38. Check for continuity between TCM connector terminal A19 and body ground.
Is there continuity?
YES- Repair short in the wire between TCM connector terminal A19 and gauge assembly connector terminals B20, B10, or B8, and transmission range switch..
NO- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM