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DTC P0706: Transmission Range Switch (Open)

WARNING: This page is about a different car, the 2013 Honda Odyssey, 2012 Honda Odyssey, and 2011 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  • This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
  1. Make sure the shift cable is adjusted properly (see SHIFT CABLE ADJUSTMENT  ).
  2. Turn the ignition switch to ON (II).
  3. Compare the ATPP, ATPR, ATPN, ATPD, ATPL, ATPFWD, and ATPRVS inputs with the HDS to the following table, in each shift lever position.
    SHIFT LEVER POSITION REFERENCE

      ATP P ATP R ATP N ATP D ATP L ATP FWD ATP RVS
    P ◦ X X X X X ◦
    R X ◦ X X X X ◦
    N X X ◦ X X X ◦
    D X X X ◦ X ◦ X
    L X X X X ◦ ◦ X
    ◦: ON
    X: OFF

    Do the transmission range switch signals match? 

    YES  -Intermittent failure, the system is OK at this time.

    NO  -Go to step 4.

  4. Compare the ATPP, ATPR, ATPN, ATPD, ATPL, ATPFWD, and ATPRVS inputs with the HDS to the table in step  3, in each shift lever position.

    Do all shift positions remain OFF? 

    YES  -Go to step  14.

    NO  -Record any input that did not correctly indicate ON, then go to step 5.

  5. Turn the ignition switch to LOCK (0).
  6. Disconnect the transmission range switch connector.
  7. Connect the transmission range switch connector terminal which did not indicate ON in step  4 to body ground with a jumper wire.
  8. Turn the ignition switch to ON (II).
  9. Check the transmission range switch signals that did not indicate ON with the HDS.

    Does the transmission range switch indicate ON? 

    YES  -Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT  ).

    NO  -Go to step 10.

  10. Turn the ignition switch to LOCK (0).
  11. Jump the SCS line with the HDS.
  12. Disconnect PCM connectors A (49P) and C (49P).
  13. Check for continuity between the transmission range switch circuit terminal and the PCM terminal of the input which indicated OFF, refer to the following table.
    SHIFT LEVER POSITION REFERENCE

      ATP P ATP R ATP N ATP D ATP L ATP FWD ATP RVS
    PCM A16 C25 C26 C17 C46 C18 C19
    Transmission range switch 9 8 3 7 2 1 4

    Is there continuity? 

    YES  -Update the PCM if it does not have the latest software (see PCM UPDATE ). If the PCM was updated, Replace the PCM (see PCM REPLACEMENT ).

    NO  -Repair an open in the wire between the transmission range switch and the PCM.

  14. Turn the ignition switch to LOCK (0).
  15. Disconnect the transmission range switch connector.
  16. 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
    G06966845Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT  ).

    NO  -Repair an open in the wire between the transmission range switch and body ground (G101) (see GROUND TO COMPONENTS INDEX ), or repair poor body ground (G101).

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