DTC 15 (P0713): Transmission Fluid Temperature Sensor System (Open Circuit)

CIRCUIT OPERATION
The PCM (terminal 124) applies 5 volts to the transmission fluid temperature sensor output terminal (terminal 1).
The transmission fluid temperature sensor circuit is grounded to the PCM (terminal 57).
When the transmission fluid temperature is cold, the transmission fluid temperature sensor resistance is high. When the transmission fluid temperature is hot, the transmission fluid temperature sensor resistance is low.
DESCRIPTIONS OF MONITOR METHODS
If transmission fluid temperature is below specified value even after driving test for more than specified period, PCM judges that transmission fluid temperature sensor has a failure.
MONITOR EXECUTION
Continuous
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
• DTC 23 (P0720): Output shaft speed sensor malfunction

Sensor (The sensor below is determined to be normal)
• Output shaft speed sensor
LOGIC FLOW CHARTS (Monitor Sequence)
DTC SET CONDITIONS

Check Conditions
Engine speed: 1,000 r/min or more.
Output speed: 1,000 r/min or more.
Accumulated time in above condition: 10 minutes.

Judgement Criteria
Transmission fluid temperature sensor voltage: 4.5 volts or more. (1 second)
OBD-II DRIVE CYCLE PATTERN
Start the engine, drive at 60 km/h (37 mph) or more for 15 minutes in total.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:
Malfunction of the transmission fluid temperature sensor circuit
Damaged harness, connector
Malfunction of the PCM