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DTC P0706: Transmission Range Switch Open

WARNING: This page is about a different variant/trim than selected.
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, and ATPFWD inputs with the HDS to the following table in each shift lever position.
    ATPP, ATPR, ATPN, ATPD AND ATPFWD INPUTS REFERENCE CHART

      ATPP ATPR ATPN ATPD ATPFWD
    P  ON OFF OFF OFF OFF
    R  OFF ON OFF OFF OFF
    N  OFF OFF ON OFF OFF
    D  OFF OFF OFF ON ON

    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, and ATPFWD 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  -Go to step  5.

  5. Turn the ignition switch to LOCK (0).
  6. Disconnect the transmission range switch 8P connector.
  7. Connect the transmission range switch 8P connector terminal which did not indicate ON in step  4 to body ground with a jumper wire; refer to the following table.
    TRANSMISSION RANGE SWITCH 8P CONNECTOR REFERENCE CHART

      Transmission range switch 8P connector Wire color
    ATPP  No. 7 BLU/BLK
    ATPR  No. 4 WHT
    ATPN  No. 8 RED/BLK
    ATPD  No. 2 PNK
    ATPFWD  No. 5 BLU/YEL
  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 connector B (44P).
  13. Check for continuity between the transmission range switch 8P connector terminal and the PCM connector terminal of the input which indicated OFF; refer to the following table.
    TRANSMISSION RANGE SWITCH 8P CONNECTOR REFERENCE CHART

      PCM connector Transmission range switch 8P connector Wire color
    ATPP  B13 No. 7 BLU/BLK
    ATPR  B14 No. 4 WHT
    ATPN  B12 No. 8 RED/BLK
    ATPD  B21 No. 2 PNK
    ATPFWD  B28 No. 5 BLU/YEL

    Is there continuity? 

    YES  -Replace the PCM (see ECM/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 8P connector.
  16. Check for continuity between transmission range switch 8P connector terminal No. 3 and body ground.
    Fig 1: Checking For Continuity Between Transmission Range Switch 8P Connector Terminal No. 3 And Body Ground
    G06950923Courtesy 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), or repair poor body ground (G101).

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