DTC P0706: Transmission Range Switch Open
- 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.
- Make sure the shift cable is adjusted properly (see SHIFT CABLE ADJUSTMENT ).
- Turn the ignition switch to ON (II).
- 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.
- 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.
- Turn the ignition switch to LOCK (0).
- Disconnect the transmission range switch 8P connector.
- 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 - Turn the ignition switch to ON (II).
- 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.
- Turn the ignition switch to LOCK (0).
- Jump the SCS line with the HDS.
- Disconnect PCM connector B (44P).
- 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.
- Turn the ignition switch to LOCK (0).
- Disconnect the transmission range switch 8P connector.
- 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
Courtesy 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).