P0705

DTC P0705: Short in Transmission Range Switch Circuit (Multiple Shift-position Input)

NOTE:
^ Record all freeze data and review General Troubleshooting Information before you troubleshoot.
^ 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. Move the shift lever, stop it in 1 second in each position, and check the OBD STATUS in DTCs MENU for a pass/fail test of code P0705.
Did the indicate a fail?
YES - Go to step 3.
NO - Intermittent failure, the system is OK at this time. Check for an intermittent short in the wire between the transmission range switch, PCM and gauge assembly. If the tester indicates NOT COMPLETE, return to step 1 and recheck.
3. Inspect the transmission range switch.
Is the switch OK ?
YES - With the switch connector disconnected, go to step 4.
NO - Replace the transmission range switch, then go to step 51.
4. Turn the ignition switch ON (II).





5. Measure the voltage between transmission range switch connector terminals No. 4 and No. 5.
Is there battery voltage?
YES - Go to step 11.
NO - Go to step 6.
6. Turn the ignition switch OFF.
7. Jump the SCS line with the HDS.
8. Disconnect PCM connector B (56P).
9. Disconnect gauge assembly connector A (30P).





10. Check for continuity between PCM connector terminal B22 and body ground.
Is there continuity ?
YES - Repair short in the wire between PCM connector terminal B22, transmission range switch, and gauge assembly, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





11. Measure the voltage between transmission range switch connector terminals No. 3 and No. 5.
Is there battery voltage?
YES - Go to step 17.
NO - Go to step 12.
12. Turn the ignition switch OFF.
13. Jump the SCS line with the HDS.
14. Disconnect PCM connector B (56P).
15. Disconnect gauge assembly connector A (30P).





16. 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, transmission range switch, and gauge assembly, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





17. Measure the voltage between transmission range switch connector terminals No. 8 and No. 5.
Is there battery voltage?
YES - Go to step 23.
NO - Go to step 18.
18. Turn the ignition switch OFF.
19. Jump the SCS line with the HDS.
20. Disconnect PCM connector B (56P).
21. Disconnect gauge assembly connector A (30P).





22. Check for continuity between PCM connector terminal B21 and body ground.
Is there continuity ?
YES - Repair short in the wire between PCM connector terminal B21, transmission range switch, and gauge assembly, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





23. Measure the voltage between transmission range switch connector terminals No. 2 and No. 5.
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 B (56P).





27. Check for continuity between PCM connector terminal B20 and body ground.
Is there continuity ?
YES - Repair short in the wire between PCM connector terminal B20, transmission range switch, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





28. Measure the voltage between transmission range switch connector terminals No. 7 and No. 5.
Is there battery voltage?
YES - Go to step 34.
NO - Go to step 29.
29. Turn the ignition switch OFF.
30. Jump the SCS line with the HDS.
31. Disconnect PCM connector B (56P).
32. Disconnect gauge assembly connector A (30P).





33. Check for continuity between PCM connector terminal B19 and body ground.
Is there continuity ?
YES - Repair short in the wire between PCM connector terminal B19, transmission range switch, and gauge assembly, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





34. Measure the voltage between transmission range switch connector terminals No. 1 and No. 5.
Is there battery voltage?
YES - Go to step 40.
NO - Go to step 35.
35. Turn the ignition switch OFF.
36. Jump the SCS line with the HDS.
37. Disconnect PCM connector B (56P).
38. Disconnect gauge assembly connector A (30P).





39. Check for continuity between PCM connector terminal B18 and body ground.
Is there continuity ?
YES - Repair short in the wire between PCM connector terminal B18, transmission range switch, and gauge assembly, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





40. Measure the voltage between transmission range switch connector terminals No. 6 and No. 5.
Is there battery voltage?
YES - Go to step 46.
NO - Go to step 41.
41. Turn the ignition switch OFF.
42. Jump the SCS line with the HDS.
43. Disconnect PCM connector B (56P).
44. Disconnect gauge assembly connector A (30P).





45. Check for continuity between PCM connector terminal B40 and body ground.
Is there continuity ?
YES - Repair short in the wire between PCM connector terminal B40, transmission range switch, and gauge assembly, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





46. Measure the voltage between transmission range switch connector terminals No. 9 and No. 5.
Is there battery voltage?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Go to step 47.
47. Turn the ignition switch OFF.
48. Jump the SCS line with the HDS.
49. Disconnect PCM connector B (56P).





50. Check for continuity between PCM connector terminal B24 and body ground.
Is there continuity ?
YES - Repair short in the wire between PCM connector terminal B24, transmission range switch, then go to step 51.
NO - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
51. Clear the DTC with the HDS.
52. Move the shift lever, stop it in 1 second in each position.
53. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0705.
Did the result indicate a pass?
YES - The problem has been corrected.
NO - Return to step 1 and recheck.