DTC P0713: Transmission Fluid Temperature Sensor "A" Circuit High: Notes

DTC detecting condition: 

Immediately at fault recognition

Trouble symptom: 

• Excessive shift shock
• Shift characteristics malfunction
  CAUTION: Use the check board when measuring the TCM terminal voltage and resistance.

Wiring diagram: 

CVT control system Refer to WIRING SYSTEM>CVT CONTROL SYSTEM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK HARNESS. 
   1. Turn the ignition switch to OFF.
   2. Disconnect the TCM connector.
   3. Turn the ignition switch to ON.
   4. Measure the voltage between TCM connectors.

      Connector & terminal 

      (B54) No. 6 (+) - (B54) No. 1 (-):

   Is the voltage 5 V or more?

   Yes:  Repair the short circuit of harness.

   No:  Go to  2.

2. CHECK HARNESS. 
   1. Turn the ignition switch to OFF.
   2. Disconnect the transmission connector.
   3. Measure the resistance between TCM connector and transmission connectors.

      Connector & terminal 

      (B54) No. 6 - (B11) No. 16:

      (B54) No. 1 - (B11) No. 19:

   Is the resistance less than 1 Ω?

   Yes:  Go to  3.

   No:  Repair the open circuit of body harness.

3. CHECK ATF TEMPERATURE SENSOR. 

   Measure the resistance between transmission connector terminals.

   Connector & terminal 

   (T4) No. 16 - No. 19:

   Is the resistance 1 MΩ or more?

   Yes:  Repair the open circuit of transmission harness.

   No:  Go to  4.

4. CHECK ATF TEMPERATURE SENSOR. 
   1. Connect all connectors.
   2. Start the engine.
   3. Warm up until the ATF temperature exceeds 50°C (122°F).
   4. Turn the ignition switch to OFF.
   5. Disconnect the transmission connector.
   6. Measure the resistance between transmission connector terminals.

      Connector & terminal 

      (T4) No. 16 - No. 19:

   Is the resistance 730 - 1120 Ω?

   Yes:  Go to  5.

   No:  Go to  7.

5. CHECK ATF TEMPERATURE SENSOR. 

   Measure the resistance between transmission connector terminals.

   Connector & terminal 

   (T4) No. 16 - No. 19:

   Does the resistance value increase gradually while the ATF temperature decreases?

   Yes:  Go to  6.

   No:  Replace the control valve body. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>CONTROL VALVE BODY .

6. CHECK INPUT SIGNAL FOR TCM. 
   1. Connect the connector to transmission.
   2. Turn the ignition switch to ON. (Do not start engine.)
   3. Read the data of «ATF Temp.» using the Subaru Select Monitor.

   Does the ATF temperature gradually decrease?

   Yes:  Check for poor contact of the ATF temperature sensor and transmission connector harness, and repair the defective part.

   No:  Go to  7.

7. CHECK FOR POOR CONTACT. 

   Is there poor contact of ATF temperature sensor circuit?

   Yes:  Repair the poor contact.

   No:  Replace the TCM. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION CONTROL MODULE (TCM) .