Purpose of the automatic transmission selector position sensor
The Automatic Transmission Position Sensor is an electronic component that detects the position of the automatic transmission selector lever and transmits information to the electronic transmission control module (TCM).
Design and operation of the automatic transmission selector position sensor
The automatic transmission selector position sensor is usually a small plastic housing with a built-in magnetoresistive or optoelectronic sensor. When the selector lever is moved, it rotates the sensor shaft, changing the magnetic field or light signal that is sensed by the sensor.
The electronic signal generated by the sensor is then transmitted to the TCM, which uses this information to control the operation of the automatic transmission. For example, the TCM can use selector position data to select the appropriate gear, lock up the torque converter, or engage park mode.
Location of the automatic transmission selector position sensor on a Nissan Tiida
On a Nissan Tiida, the automatic transmission selector position sensor is usually located on the left side of the gearbox, next to the selector lever. It bolts to the transmission housing and has a wiring harness connected to the TCM.
Signs of a malfunction of the automatic transmission selector position sensor
If the automatic transmission selector position sensor is faulty, the following problems may occur:
* The automatic transmission does not shift to the desired gear or does not shift at all
* The instrument panel displays the incorrect position of the automatic transmission selector
* Difficulty turning on or off parking mode
* Engine may stall when changing gears
Replacing the automatic transmission selector position sensor
If you suspect that the automatic transmission selector position sensor is faulty, you need to replace it. Replacement should be performed by a qualified mechanic as it requires specialized knowledge and equipment.
To replace the automatic transmission selector position sensor on a Nissan Tiida, you must perform the following steps:
1. Disconnect the negative terminal of the battery.
2. Locate the automatic transmission selector position sensor on the gearbox.
3. Disconnect the wiring harness from the sensor.
4. Remove the bolt(s) securing the sensor to the transmission.
5. Remove the old sensor and install the new one.
6. Tighten the bolt(s) and connect the wiring harness.
7. Connect the negative terminal of the battery.
8. Reset transmission adaptations (if necessary).
After replacing the automatic transmission selector position sensor, it is necessary to reset the transmission adaptations so that it works correctly. Resetting adaptations can be done using a diagnostic scanner or by disconnecting the battery for a few minutes.