When is the transmission fluid temp sensor a circuit?
When is the transmission fluid temp sensor a circuit?
Error Code P0713 is set when the PCM detects a high transmission fluid temperature signal, which suggests an open circuit issue. If this code is stored, the TCM (transmission control module) is reading voltage that is too high for the parameters set by the manufacturer, which means the automatic transmission fluid is too hot.
Where is the temperature sensor located in a transaxle?
It’s located in the valve body or oil pan of the transmission or transaxle. The TCM uses this sensor to monitor the temperature of the transmission fluid.
How does the temperature of the transmission fluid affect the TCM?
The TCM uses this sensor to monitor the temperature of the transmission fluid. Thermistors like the TFT change resistance as temperature changes. We know with ohms law that as resistance changes, the voltage signal changes as well. By increasing resistance, we lower the voltage signal sent to the TCM.
What happens when a TFT sensor goes bad?
If the fluid temperature reaches a threshold set by the manufacturer; 300° F or so, the TCM sets a fault code and illuminates the MIL to inform the driver. A faulty TFT sensor affects the torque converter and the transmission’s line pressure.
How to check transmission fluid temp sensor data?
Check the transmission temperature sensor data parameter using the scan tool. Disconnect the TFT sensor. The scan tool value must drop to a very low value. Then, connect a jumper wire across the terminals. If the scan tool now shows a high temperature, the connection is good, and PCM can recognize the input.
When to use the transmission fluid temperature code p0713?
Code P0713 is set when the PCM detects a high transmission fluid temperature sensor signal. This usually indicates an open circuit. An example of a transmission fluid temperature sensor: Related trans fluid temperature sensor “A” circuit codes: P0710 Transmission Fluid Temperature Sensor A Circuit Malfunction
It’s located in the valve body or oil pan of the transmission or transaxle. The TCM uses this sensor to monitor the temperature of the transmission fluid.
What happens to a TFT sensor when oil temperature goes up?
TFT sensors are a type of negative temperature coefficient (NTC) thermistor. This means internal resistance of the sensor is inversely proportional to the oil temperature. The TFT sensor signal voltage goes down when the transmission fluid temperature goes up and vice versa.
