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

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION  (see ).
  • 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 (see TRANSMISSION RANGE SWITCH TEST ).

    Is the switch OK? 

    YES  - Connect the switch connector, then go to step  6.

    NO-Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT ), then go to step  65.

  6. Turn the ignition switch to ON (II).
  7. Measure the voltage between PCM connector terminals C22 and A8 or A9, in all positions other than P.
    Fig 1: Measuring Voltage Between PCM Connector Terminals C22 And A8 Or A9
    G05455178

    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 C (22P).
  11. Check for continuity between PCM connector terminal C22 and body ground.
    Fig 2: Checking Continuity Between PCM Connector Terminal C22 And Body Ground
    G05455179

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C22 and transmission range switch, then go to step  65.

    NO  - Go to step  12.

  12. Disconnect PCM connector A (31P).
  13. Check for continuity between PCM connector terminals A8 and body ground, and between A9 and body ground.
    Fig 3: Checking Continuity Between PCM Connector Terminals A8 And Body Ground
    G05455180

    Is there continuity? 

    YES  - Go to step  59.

    NO  -Repair open in the wire between PCM connector terminals A8, A9, and ground (G101), or repair poor ground (G101), then go to step  65.

  14. Measure the voltage between PCM connector terminals C21 and A8 or A9, in all positions other than R.
    Fig 4: Measuring Voltage Between PCM Connector Terminals C21 And A8 Or A9
    G05455181

    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 C (22P).
  18. Check for continuity between PCM connector terminal C21 and body ground.
    Fig 5: Checking Continuity Between PCM Connector Terminal C21 And Body Ground
    G05455182

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C21 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  19. Measure the voltage between PCM connector terminals C20 and A8 or A9, in all positions other than N.
    Fig 6: Measuring Voltage Between PCM Connector Terminals C20 And A8 Or A9
    G05455183

    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 C (22P).
  23. Check for continuity between PCM connector terminal C20 and body ground.
    Fig 7: Checking Continuity Between PCM Connector Terminal C20 And Body Ground
    G05455184

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C20 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  24. Measure the voltage between PCM connector terminals C17 and A8 or A9, in all positions other than D.
    Fig 8: Measuring Voltage Between PCM Connector Terminals C17 And A8 Or A9
    G05455185

    Is there battery voltage? 

    YES  -

    • Seven-position transmission: Go to step  29.
    • Five-position transmission: Go to step  44.

    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 C17 and body ground.
    Fig 9: Checking Continuity Between PCM Connector Terminal C17 And Body Ground
    G05455186

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C17 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  29. Measure the voltage between PCM connector terminals C9 and A8 or A9, in all positions other than D3.
    Fig 10: Measuring Voltage Between PCM Connector Terminals C9 And A8 Or A9
    G05455187

    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 C9 and body ground.
    Fig 11: Checking Continuity Between PCM Connector Terminal C9 And Body Ground
    G05455188

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C9 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  34. Measure the voltage between PCM connector terminals C11 and A8 or A9, in all positions other than 2 and 1.
    Fig 12: Measuring Voltage Between PCM Connector Terminals C11 And A8 Or A9
    G05455189

    Is there about 5 V? 

    YES  - Go to step  39.

    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 C11 and body ground.
    Fig 13: Checking Continuity Between PCM Connector Terminal C11 And Body Ground
    G05455190

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C11 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  39. Measure the voltage between PCM connector terminals C18 and A8 or A9, in all positions other than D, D3, and 2.
    Fig 14: Measuring Voltage Between PCM Connector Terminals C18 And A8 Or A9
    G05455191

    Is there battery voltage? 

    YES  - Go to step  54.

    NO  - Go to step  40.

  40. Turn the ignition switch to LOCK (0).
  41. Jump the SCS line with the HDS.
  42. Disconnect PCM connector C (22P).
  43. Check for continuity between PCM connector terminal C18 and body ground.
    Fig 15: Checking Continuity Between PCM Connector Terminal C18 And Body Ground
    G05455192

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C18 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  44. Measure the voltage between PCM connector terminals C9 and A8 or A9, in all positions other than S.
    Fig 16: Measuring Voltage Between PCM Connector Terminals C9 And A8 Or A9
    G05455193

    Is there battery voltage? 

    YES  - Go to step  49.

    NO  - Go to step  45.

  45. Turn the ignition switch to LOCK (0).
  46. Jump the SCS line with the HDS.
  47. Disconnect PCM connector C (22P).
  48. Check for continuity between PCM connector terminal C9 and body ground.
    Fig 17: Checking Continuity Between PCM Connector Terminal C9 And Body Ground
    G05455194

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C9 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  49. Measure the voltage between PCM connector terminals C18 and A8 or A9, in all positions other than D and S.
    Fig 18: Measuring Voltage Between PCM Connector Terminals C18 And A8 Or A9
    G05455195

    Is there battery voltage? 

    YES  - Go to step  54.

    NO  - Go to step  50.

  50. Turn the ignition switch to LOCK (0).
  51. Jump the SCS line with the HDS.
  52. Disconnect PCM connector C (22P).
  53. Check for continuity between PCM connector terminal C18 and body ground.
    Fig 19: Checking Continuity Between PCM Connector Terminal C18 And Body Ground
    G05455196

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C18 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  54. Measure the voltage between PCM connector terminals C12 and A8 or A9, in all positions other than R.
    Fig 20: Measuring Voltage Between PCM Connector Terminals C12 And A8 Or A9
    G05455197

    Is there battery voltage? 

    YES  - Go to step  60.

    NO  - Go to step  55.

  55. Turn the ignition switch to LOCK (0).
  56. Jump the SCS line with the HDS.
  57. Disconnect PCM connector C (22P).
  58. Check for continuity between PCM connector terminal C12 and body ground.
    Fig 21: Checking Continuity Between PCM Connector Terminal C12 And Body Ground
    G05455198

    Is there continuity? 

    YES  - Repair short in the wire between PCM connector terminal C12 and the transmission range switch, then go to step  65.

    NO  - Go to step  59.

  59. Reconnect all connectors.
  60. Update the A/T software in the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ).
  61. Start the engine.
  62. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.
  63. 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 (see SUBSTITUTING THE PCM ), then recheck. If the PCM was substituted, go to step  1.

    NO  - Go to step  64.

  64. 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 (see ECM/PCM REPLACEMENT ). If any other DTCs were indicated on step 63, go to the indicated DTCs 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 (see SUBSTITUTING THE PCM ), then recheck. If the PCM was substituted, go to step  1. If the HDS indicates NOT COMPLETED, return to step  61 and recheck.

  65. Clear the DTC with the HDS.
  66. Start the engine.
  67. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each position.
  68. 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  67 and recheck.

    NO  - Go to step  69.

  69. 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 68, go to the indicated DTCs 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  66 and recheck.

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