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DTC P0713: Malfunction of the Transmission Fluid Temperature Sensor (High Voltage)
 
 
 
 
DIAGNOSTIC FUNCTION
TCM conducts fault detection by monitoring the terminal voltage of the transmission fluid temperature sensor.
 
 
DESCRIPTIONS OF MONITOR METHODS
TCM detects the transmission fluid temperature sensor voltage of 2.48 volts [-40°C (-40°F)] or more for five seconds.
 
 
MONITOR EXECUTION
Vehicle speed: 10 km/h (6.2 mph) or more
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • P0720: Abnormality in output speed sensor
Sensor (The sensor below is determined to be normal)
  • Output speed sensor
 
 
LOGIC FLOW CHARTS (Monitor Sequence)
 
 
DTC SET CONDITIONS
Check Conditions
  • Vehicle speed: 10 km/h (6.2 mph) or more.
  • Voltage of battery: 10 volts or more.
  • Voltage of battery: 16.5 volts or less.
Judgment Criteria
  • Transmission fluid temperature sensor voltage of 2.48 volts [-40°C (-40°F)] or more for five seconds.
 
 
OBD-II DRIVE CYCLE PATTERN
The vehicle is driven for at least 10 seconds at the speed of 20 km/h (12.4 mph) or more.
 
 
PROBABLE CAUSES
  • Malfunction of the valve body assembly (Defective transmission fluid temperature sensor)
  • Damaged wiring harness and connectors
  • Malfunction of TCM
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicles Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
STEP 1. Check the following connector
  • CVT assembly connector
  • TCM connector
Check the terminals for a contact status problem and internal short circuit.
Is the check result normal?
Go to Step 2.
Repair the defective connector.
 
STEP 2. Check for open circuit in SPWR and SGND line between the CVT assembly connector and the TCM connector
Is the check result normal?
Go to Step 3.
Repair the wiring harness.
 
STEP 3. transmission fluid temperature sensor check
Refer to .
Is the check result normal?
Go to Step 4.
Replace the valve body assembly (Refer to ).
 
STEP 4. transmission fluid temperature sensor continuity check
Disconnect the CVT assembly connector, and then check that there is no continuity between the sensor-side terminal number 12 and the transaxle case.
Is the check result normal?
Go to Step 5.
Replace the valve body assembly (Refer to ).
 
STEP 5. Using scan tool (M.U.T.-III), recheck the DTC.
Check again if the DTC is stored.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Carry out a test drive with the OBD-II drive cycle pattern.
(4) Recheck the DTC.
Is DTC P0713 stored?
Replace the TCM (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).