DTC Troubleshooting: P0706
DTC P0706: Transmission Range Switch Open
NOTE:
Before you troubleshoot, 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.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P0706 Transmission Range Switch Open
      

1.
Problem verification:

Problem verification
?1.
Make sure the shift cable is properly adjusted.

?2.
Turn the vehicle to the ON mode.

?3.
Compare the transmission range switch signal inputs with the HDS to the following table, in each shift lever position/mode.
 
A/T P Switch
A/T R Switch
A/T N Switch
A/T D Switch
A/T S Switch
A/T L Switch*
Forward Switch
Reverse Switch
P
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
R
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
N
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
D
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
S
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
L*
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
*: Without paddle shifter

Signal
Current conditions
Values
Unit
A/T P Switch
    
A/T R Switch
    
A/T N Switch
    
A/T D Switch
    
A/T S Switch
    
A/T L Switch*
    
Forward Switch
    
Reverse Switch
    
*: Without paddle shifter

Are the transmission range switch signals OK?

     
YES
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between the transmission range switch and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?
     
NO
     
     
     
The failure is duplicated. Go to step 2.
2.
Transmission range switch signal check:

Transmission range switch signal check
?1.
Compare the transmission range switch signal inputs with the HDS to the following table, in each shift lever position/mode.
 
A/T P Switch
A/T R Switch
A/T N Switch
A/T D Switch
A/T S Switch
A/T L Switch*
Forward Switch
Reverse Switch
P
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
R
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
N
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
D
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
S
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
L*
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
*: Without paddle shifter

Signal
Current conditions
Values
Unit
A/T P Switch
    
A/T R Switch
    
A/T N Switch
    
A/T D Switch
    
A/T S Switch
    
A/T L Switch*
    
Forward Switch
    
Reverse Switch
    
*: Without paddle shifter

Do all transmission range switch signals remain OFF?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Record the abnormal circuit, then go to step 3.
3.
Transmission range switch check:

Transmission range switch check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Transmission range switch 10P connector

?3.
Connect the transmission range switch connector terminal that did not indicate ON in step 2 to body ground with a jumper wire; refer to the following table.
Signal
Transmission range switch 10P connector
Terminal number
Terminal name
A/T P Switch
4
ATP-P
A/T R Switch
3
ATP-R
A/T N Switch
8
ATP-N
A/T D Switch
2
ATP-D
A/T S Switch
7
ATP-S
A/T L Switch*
1
ATP-L
Forward Switch
6
ATP-FWD
Reverse Switch
10
ATP-RVS
*: Without paddle shifter


?4.
Turn the vehicle to the ON mode.

?5.
Check the transmission range switch signal that did not indicate ON with the HDS.

Does the transmission range switch signal indicate ON?

     
YES
     
     
     
     
NO
     
     
     
The transmission range switch is OK. Go to step 4.
4.
Open wire check (corresponding line):

Open wire check (corresponding line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Jump the SCS line with the HDS.


?3.
Disconnect the following connectors.
PCM connector A (51P)
PCM connector C (51P)

?4.
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.
 
ATP-P
ATP-R
ATP-N
ATP-D
ATP-S
ATP-L*
ATP-FWD
ATP-RVS
PCM
A10
A9
C24
C25
C43
C44
C26
C23
Transmission range switch
4
3
8
2
7
1
6
10
*: Without paddle shifter


Is there continuity?

     
YES
     
     
     
The wires are OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P0706 goes away and the PCM was updated, troubleshooting is complete. If DTC P0706 goes away and the PCM was substituted, replace the original PCM.?
     
NO
     
     
     
Repair an open in the wire between the corresponding transmission range switch connector terminal and the PCM.?
5.
Open wire check (PG3 line):

Open wire check (PG3 line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Transmission range switch 10P connector

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Transmission range switch 10P connector: disconnected
Test point 1
Transmission range switch 10P connector No. 5
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Repair an open in the PG3 wire between the transmission range switch and ground (G101), or repair poor ground (G101).?