DTC P0706: Transmission Range Switch Open

NOTE: 

• Before you troubleshoot, review the General Troubleshooting Information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .
• This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

• 1. Problem verification:

  1. Make sure the shift cable is properly adjusted .

  2. Turn the vehicle to the ON mode.

  3. Clear the DTC with the HDS.

  4. Test-drive the vehicle in D position/mode until the vehicle speed reaches 37 mph (60 km/h), then slow down to 6 mph (10 km/h).

  5. Turn the engine off. Repeat the test-drive in step 1-4 again.

  6. Check for Pending or Confirmed DTCs with the HDS.

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

  Is DTC P0706 indicated?

  YES 

  The failure is duplicated. Go to step 2.

  NO 

  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.

• 2. Determine possible failure area (transmission range switch, others):

  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	Transmission range switch 10P connector No. 6
  Terminal B	Body ground

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

  4. Turn the vehicle to the ON mode.

  5. Check the parameter(s) below with the HDS.

  Signal	Threshold		Current conditions
  	Values	Unit	Values	Unit
  Forward Switch	ON

  Do the current condition(s) match the threshold?

  YES 

  Replace the transmission range switch .

  NO 

  Go to step 3.

• 3. Open wire check (ATP-FWD line):

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

  2. Remove the jumper wire.

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

  4. Disconnect the following connector.

  PCM connector C (51P)

  5. Check for continuity between test points 1 and 2.

  Test condition	Vehicle OFF (LOCK) mode
  	Transmission range switch 10P connector: disconnected
  	PCM connector C (51P): disconnected
  Test point 1	Transmission range switch 10P connector No. 6
  Test point 2	PCM connector C (51P) No. 26

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

  Is there continuity?

  YES 

  The ATP-FWD wire is 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 ATP-FWD wire between the transmission range switch and the PCM.