Nissan Teana automatic transmission selector position sensor
Function
The automatic transmission position sensor in the Nissan Teana detects the position of the gear selector and transmits this information to the electronic transmission control module (TCM). The TCM uses this data to control gear shifting and prevent the wrong gear mode from being selected.
Location
The automatic transmission selector position sensor is usually located on the base of the gear selector in the vehicle interior.
Sensor circuit
The sensor can come in a variety of designs, but typically includes the following:
* Potentiometer or position sensor
* Electrical contacts
* Frame
Operating principle
When you move the gear selector, the potentiometer or position sensor moves, changing the electrical resistance or generating a different output voltage. The TCM interprets these signals and determines what position the gear selector is in.
Symptoms of malfunction
A faulty automatic transmission selector position sensor can lead to the following symptoms:
* Unexpected or incorrect gear shifting
* Difficulty switching to certain gear modes (for example, ‘Parking’ or ‘Drive’)
* Display of incorrect gear selector position on the dashboard
* Malfunction Engine Indicator Lamp (MIL) Illumination
Diagnostics and replacement
Diagnosis of a faulty automatic transmission selector position sensor can be performed using a diagnostic trouble code (DTC) scanner. Sensor related DTCs may include:
* P0705: Automatic transmission selector position sensor malfunction
* P0715: Low signal level of the automatic transmission selector position sensor
* P0725: Automatic transmission selector position sensor signal high
If diagnostics indicate a sensor malfunction, it must be replaced. The replacement procedure may vary depending on the Teana model, but usually includes the following steps:
1. Disconnecting the battery
2. Removing the gear selector housing or console
3. Disconnecting the electrical connector of the sensor
4. Unscrewing the mounting bolts and removing the sensor
5. Installing a new sensor and tightening the bolts
6. Connecting the electrical connector
7. Installing the gear selector housing or console
8. Battery connection
After replacing the sensor, you need to reset the fault code and check the operation of the gear selector.