DTC P0712: CVT Fluid Temperature Sensor (Short)

NOTE: 

• Before you troubleshoot, review the General Troubleshooting Information - Refer to: HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS or How to Troubleshoot the CVT System(CVT) .
• This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

DTC (CVT)

1. Problem verification:

   - 1. Turn the vehicle to the ON mode.

   - 2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   CVTF Temp Sensor (V)	Less than 0.07	V

   Do the current condition(s) match the threshold?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between the transmission fluid temperature sensor 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.

2. Transmission fluid temperature sensor check:

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

   - 2. Disconnect the following connector.

   Solenoid wire harness 8P connector (engine wire harness side)

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

   - 3. Turn the vehicle to the ON mode.

   - 4. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   CVTF Temp Sensor (V)	Less than 0.07	V

   Do the current condition(s) match the threshold?

   YES 

   The transmission fluid temperature sensor is OK. Go to step 3.

   NO 

   Faulty transmission fluid temperature sensor. Replace the solenoid wire harness .

3. Shorted wire check (TATF line):

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

   - 2. Jump the SCS line with the HDS.

   SCS Short

   - 3. Disconnect the following connector.

   PCM connector C (51P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Solenoid wire harness 8P connector (engine wire harness side): disconnected
   	PCM connector C (51P): disconnected
   Test point 1	PCM connector C (51P) No. 37
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the TATF wire between the solenoid wire harness and the PCM.

   NO 

   The TATF wire is OK. Update the PCM if it does not have the latest software , or substitute a known-good PCM , then recheck. If DTC P0712 goes away and the PCM was updated, troubleshooting is complete. If DTC P0712 goes away and the PCM was substituted, replace the original PCM .