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

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. 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 the 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 (II).

Compare the ATPP, ATPR, ATPN, ATPD, ATPS, ATPFWD, and ATPRVS inputs with the HDS to the following table, in each shift lever position.

	ATPP	ATPR	ATPN	ATPD	ATPS	ATP FWD	ATP RVS
P	◦	X	X	X	X	X	X
R	X	◦	X	X	X	X	◦
N	X	X	◦	X	X	X	X
D	X	X	X	◦	X	◦	X
S	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 3.

Compare the ATPP, ATPR, ATPN, ATPD, ATPS, 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 indicated 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 which incorrectly indicates ON in step 3 to body ground with a jumper wire.
Turn the ignition switch to ON (II).

Compare the ATPP, ATPR, ATPN, ATPD, ATPS, ATPFWD, and ATPRVS inputs with the HDS to the table in step 2.

Do multiple transmission range switch signals indicate ON?

YES -Repair a short in the wires between the transmission range switch and the PCM, refer to the following table.

NO -Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT ).

	ATP P	ATP R	ATP N	ATP D	ATP S	ATP FWD	ATP RVS
PCM	A16	C25	C26	C17	C46	C18	C19
Transmission range switch	7	8	4	9	10	5	1

Turn the ignition switch to LOCK (0).
Disconnect the transmission range switch connector.
Turn the ignition switch to ON (II).
Check the transmission range switch signal that remained ON with the HDS.
Do any transmission range switch signals remain ON?

YES -Go to step 13.

NO -Replace the transmission range switch (see TRANSMISSION RANGE SWITCH REPLACEMENT ).
Turn the ignition switch to LOCK (0).
Check for continuity to body ground in the circuit that remained ON in step 12.
Does the circuit that indicated ON have continuity to ground?

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

NO -Replace the PCM (see PCM REPLACEMENT ).