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DTC P0706: Open in Transmission Range Switch Circuit

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. Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle on a lift.
  3. Start the engine, and run it in D until the vehicle speed reaches 25 mph (40 km/h). Slow down, and stop the wheels.
  4. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 3.
  5. Monitor the OBD status for P0706 in the DTCs/ Freeze Data in A/T Mode Menu for a pass/fail.

    Does the HDS indicate FAILED? 

    YES  - Go to step  6.

    NO  - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, return to step  3 and recheck.

  6. Inspect the transmission range switch (see TRANSMISSION RANGE SWITCH TEST ).

    Is the switch OK? 

    YES  - Go to step  7.

    NO  - Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT ), then go to step  32.

  7. Adjust the shift cable (see SHIFT CABLE ADJUSTMENT ).
  8. Clear the DTC with the HDS.
  9. Shift to D, and verify the ATP FWD and ATP D inputs with the HDS in the A/T data list.

    Are ATP FWD and ATP DON? 

    YES  -

    • Seven-position transmission: Go to step  10.
    • Five-position transmission: Go to step  12.

    NO  - Go to step  17.

  10. Shift to D3, and verify the ATF FWD and ATP D3 inputs with the HDS in the A/T data list.

    Are ATP FWD and ATP D3 ON? 

    YES  - Go to step  11.

    NO  - Go to step  17.

  11. Shift to 2, and verify the ATF FWD and ATP 2 inputs with the HDS in the A/T data list.

    Are ATP FWD and ATP 2 ON? 

    YES  - Go to step  13.

    NO  - Go to step  17.

  12. Shift to S, and verify the ATF FWD and ATP S inputs with the HDS in the A/T data list.

    Are ATP FWD and ATP S ON? 

    YES  - Go to step  13.

    NO  - Go to step  17.

  13. Clear the DTC with the HDS, and turn the ignition switch to LOCK (0).
  14. Start the engine, and run it in D until the vehicle speed reaches 25 mph (40 km/h). Slow down, and stop the wheels.
  15. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 14.
  16. Monitor the OBD status for P0706 in the DTCs/ Freeze Data in A/T Mode Menu for a pass/fail.

    Does the HDS indicate FAILED? 

    YES  - Go to step  17.

    NO  - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmission range switch and the PCM. If the HDS indicates NOT COMPLETED, return to step  14 and recheck.

  17. Turn the ignition switch to LOCK (0).
  18. Disconnect the transmission range switch connector.
  19. Check for continuity between transmission range switch connector terminal No. 10 and body ground.
    Fig 1: Checking Continuity Between Transmission Range Switch Connector Terminal No. 10 And Body Ground
    G05455199

    Is there continuity? 

    YES  - Go to step  20.

    NO  - Repair open in the wire between the transmission range switch and ground (G101), or repair poor ground (G101), then go to step  32.

  20. Turn the ignition switch to ON (II).
  21. Measure the voltage between transmission range switch connector terminals No. 5 and No. 10.
    Fig 2: Measuring Voltage Between Transmission Range Switch Connector Terminals No. 5 And No. 10.
    G05455200

    Is there voltage? 

    YES  - Go to step  22.

    NO  - Repair open in the wire between the transmission range switch and PCM connector terminal C18, then go to step  32.

  22. Measure the voltage between transmission range switch connector terminals No. 8 and No. 10.
    Fig 3: Measuring Voltage Between Transmission Range Switch Connector Terminals No. 8 And No. 10
    G05455201

    Is there voltage? 

    YES  -

    • Seven-position transmission: Go to step  23.
    • Five-position transmission: Go to step  25.

    NO  - Repair open in the wire between the transmission range switch and PCM connector terminal C17, then go to step  32.

  23. Measure the voltage between transmission range switch connector terminals No. 3 and No. 10.
    Fig 4: Measuring Voltage Between Transmission Range Switch Connector Terminals No. 3 And No. 10
    G05455202

    Is there voltage? 

    YES  - Go to step  24.

    NO  - Repair open in the wire between the transmission range switch and PCM connector terminal C9, then go to step  32.

  24. Measure the voltage between transmission range switch connector terminals No. 9 and No. 10.
    Fig 5: Measuring Voltage Between Transmission Range Switch Connector Terminals No. 9 And No. 10
    G05455203

    Is there voltage? 

    YES  - Go to step  26.

    NO  - Repair open in the wire between the transmission range switch and PCM connector terminal C11, then go to step  32.

  25. Measure the voltage between transmission range switch connector terminals No. 3 and No. 10.
    Fig 6: Measuring Voltage Between Transmission Range Switch Connector Terminals No. 3 And No. 10
    G05455204

    Is there voltage? 

    YES  - Go to step  26.

    NO  - Repair open in the wire between the transmission range switch and PCM connector terminal C9, then go to step  32.

  26. Connect the transmission range switch connector.
  27. 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 ).
  28. Start the engine, and run it in D until the vehicle speed reaches 30 mph (48 km/h). Slowdown, and stop the wheels.
  29. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 28.
  30. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.

    Is DTC P0706 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  31.

  31. Monitor the OBD status for P0706 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 30, 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 (see SUBSTITUTING THE PCM ), then recheck. If the PCM was substituted, go to step  1. If the HDS indicates NOT COMPLETED, return to step  28 and recheck.

  32. Connect the transmission range switch connector.
  33. Clear the DTC with the HDS.
  34. Start the engine, and run it in D until the vehicle speed reaches 30 mph (48 km/h). Slow down, and stop the wheels.
  35. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 34.
  36. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.

    Is DTC P0706 indicated? 

    YES  - Check for poor connections and loose terminals at the transmission range switch and the PCM, then return to step  34.

    NO  - Go to step  37.

  37. Monitor the OBD status for P0706 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 36, 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  34 and recheck.

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