DTC P0706 (6-Speed A/T)

DTC P0706  : Transmission Range Switch (Open)

NOTE: 

• Before you troubleshoot, review the General Troubleshooting Information - Refer to: How to Troubleshoot the A/T System .
• This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

DTC (A/T)

1. 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.

   	A/T P Switch	A/T R Switch	A/T N Switch	A/T D Switch	A/T S Switch	Forward Switch (ATPFWD)	Reverse Switch (ATPRVS)
   P	ON	OFF	OFF	OFF	OFF	OFF	OFF
   R	OFF	ON	OFF	OFF	OFF	OFF	ON

   	A/T P Switch	A/T R Switch	A/T N Switch	A/T D Switch	A/T S Switch	Forward Switch (ATPFWD)	Reverse Switch (ATPRVS)
   N	OFF	OFF	ON	OFF	OFF	OFF	OFF
   D	OFF	OFF	OFF	ON	OFF	ON	OFF
   L	OFF	OFF	OFF	OFF	ON	ON	OFF

   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
   Forward Switch (ATPFWD)
   Reverse Switch (ATPRVS)

   Do the signals match?

   YES 

   Intermittent failure, the system is OK at this time. 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

   - 1. Check the parameter (s) below with the HDS, in each shift lever position.

   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
   Forward Switch (ATPFWD)
   Reverse Switch (ATPRVS)

   Do all signals remain OFF?

   YES 

   Go to step 5.

   NO 

   Record the abnormal circuit, then go to step 3.

3. 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 terminals A and B with a jumper wire.

   Terminal A	Corresponding circuit (did not indicate ON in step 2); refer to following table
   Terminal B	Body ground

   Connector	Signal	Circuit	Terminal
   Transmission range switch 10P connector	A/T P Switch	ATP-P/ATPP	No. 9
   	A/T R Switch	ATP-R/ATPR	No. 8
   	A/T N Switch	ATPN	No. 2
   	A/T D Switch	ATPD	No. 7
   	A/T S Switch	ATPS (ATPL)	No. 6
   	Forward Switch (ATPFWD)	ATPFWD	No. 1
   	Reverse Switch (ATPRVS)	ATPRVS	No. 5

   Courtesy of HONDA, U.S.A., INC.

   - 4. Turn the vehicle to the ON mode.

   - 5. Check the parameter (s) below that did not indicate ON with the HDS.

   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
   Forward Switch (ATPFWD)
   Reverse Switch (ATPRVS)

   Does the signal indicate ON?

   YES 

   Replace the transmission range switch .

   NO 

   The transmission range switch is OK. Go to step 4.

4. Open wire check (ATP-P/ATPP, ATP-R/ATPR, ATPN, ATPD, ATPS (ATPL), ATPFWD, ATPRVS line)

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Jump the SCS line with the HDS, and wait more than 1 minute.

   - 3. Disconnect the following connectors.

   PCM connector A (51P)

   PCM connector B (51P)

   - 4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Transmission range switch 10P connector: disconnected
   	PCM connector A (51P): disconnected
   	PCM connector B (51P): disconnected

   Test point 1 

   Connector	Signal	Test circuit	Terminal
   Transmission range switch 10P connector	A/T P Switch	ATPP	No. 9
   	A/T R Switch	ATPR	No. 8
   	A/T N Switch	ATPN	No. 2
   	A/T D Switch	ATPD	No. 7
   	A/T S Switch	ATPS (ATPL)	No. 6
   	Forward Switch (ATPFWD)	ATPFWD	No. 1
   	Reverse Switch (ATPRVS)	ATPRVS	No. 5

   Test point 2 

   Connector	Signal	Test circuit	Terminal
   PCM connector A (51P) - Refer to: PCM Connector for Inputs and Outputs (16-20 6-Speed A/T), or	A/T P Switch	ATP-P	No. A37
   	A/T R Switch	ATP-R	No. A16
   PCM connector B (51P) - Refer to: PCM Connector for Inputs and Outputs (16-20 6-Speed A/T), .	A/T N Switch	ATPN	No. B30
   	A/T D Switch	ATPD	No. B23
   	A/T S Switch	ATPS (ATPL)	No. B34
   	Forward Switch (ATPFWD)	ATPFWD	No. B29
   	Reverse Switch (ATPRVS)	ATPRVS	No. B38

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The wire (s) is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good PCM - Refer to: PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T) .

   NO 

   Repair an open in the wire between the corresponding transmission range switch connector terminal and the PCM.

5. Open wire check (INHI PG 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. 10
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The INHI PG wire is OK, replace the transmission range switch .

   NO 

   Repair an open in the INHI PG wire between the transmission range switch and ground (G101), or repair poor ground (G101).