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 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 adjustment.
Turn the ignition switch to ON (ll).
Compare the ATPP, ATPR, ATPN, ATPD, ATP2, ATP1, ATPFWD, and ATPRVS inputs with the HDS to the following table, in each shift lever position.

Fig 1: Transmission Range Switch Signal Chart
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Are the transmission range switch signals OK?

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

NO -Go to step 4.
Compare the ATPP, ATPR, ATPN, ATPD, ATP2, ATP1, ATPFWD, and ATPRVS inputs with the HDS to the table in step 3.
Do all signals remain OFF?

YES -Go to step 14.

NO -Record the input that incorrectly indicates ON, then go to step 5.
Turn the ignition switch to LOCK (0).
Disconnect the transmission range switch connector.
Connect the transmission range switch connector terminal that incorrectly indicates ON in step 4 to body ground with a jumper wire.
Turn the ignition switch to ON (ll).
Check the transmission range switch signal that did not indicate ON with the HDS.
Do any transmission range switch signals 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 connectors C (22P) and D (17 P).
Check for continuity between the transmission range switch connector terminal and the PCM terminal of the input which indicated OFF. Refer to the following table.
Is there continuity?

YES -Replace the PCM (see ECM/PCM REPLACEMENT .

NO -Repair open in the wire between the corresponding transmission range switch connector terminal and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the transmission range switch connector.
Check for continuity between transmission range switch connector terminal No. 10 and body ground.

Fig 2: Checking Continuity Between Transmission Range Switch Connector Terminal 10 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 open in the wire between transmission range switch connector terminal No. 10 and ground (G101), or repair poor ground (G101).