DTC P0705: Short in Transmission Range Switch Circuit (Multiple Shift-position Input)

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.

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.

Do the transmission range switch signals match?

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

NO -Go to step 3.
Compare the ATPP, ATPR, ATPN, ATPD, ATP2, ATP1, ATPFWD, and ATPRVS inputs with the HDS to the table in step 2, in each shift lever position.
Are any transmission range switch signals ON in all shift lever positions?

YES -Go to step 9.

NO -Record the input that incorrectly indicates ON, then go to step 4.
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 3 to body ground with a jumper wire.
Turn the ignition switch to ON (ll).
Compare the ATPP, ATPR, ATPN, ATPD, ATP2, ATP1, ATPFWD, and ATPRVS inputs with the HDS to the table in step 2.

Fig 2: Transmission Range Switch-To-PCM Inputs
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Do multiple transmission range switch signals indicate ON?

YES -Repair short in the wires between the corresponding transmission range switch connector terminal and the PCM. Refer to the following table.

NO -Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT ).
Turn the ignition switch to LOCK (0).
Disconnect the transmission range switch connector.
Turn the ignition switch to ON (ll).
Check the transmission range switch signal that remained on with the HDS to the table in step 2.
Do any transmission range switch signals remain ON?

YES -Go to step 13

NO -Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT ).
Check for continuity to body ground in the circuit which remain ON in step 2.
Does the circuit that indicated ON have continuity to ground?

YES -Repair short to body ground in the wire between the corresponding transmission range switch connector terminal and the PCM.

NO -Update the PCM if it does not have the latest software. Refer to ECM/PCM UPDATE . If the PCM was updated replace the PCM (see ECM/PCM REPLACEMENT .