Purpose of the automatic transmission selector position sensor
The automatic transmission selector position sensor (automatic gearbox) on the Suzuki Grand Vitara transmits information about the position of the gear selector to the electronic control unit (ECU) of the automatic transmission. This information is used to control gear shifting and starter interlock.
Sensor location
On a Suzuki Grand Vitara, the automatic transmission selector position sensor is usually located on the side of the automatic transmission housing, next to the gear shift lever. It can be bolted or snapped into place.
Operating principle
The automatic transmission selector position sensor uses a potentiometer to determine the position of the selector lever. A potentiometer is a variable resistor that changes its resistance depending on the position of the rotating shaft.
As the gear selector moves, the potentiometer shaft also moves, changing the resistance. This change in resistance is converted by the sensor into a corresponding electrical signal.
Electrical characteristics
The electrical characteristics of the automatic transmission selector position sensor on the Suzuki Grand Vitara may vary depending on the model and year of manufacture. The general voltage and resistance ranges are as follows:
*Output voltage: 0-5V or 0-12V
* Resistance: 0-5KOhm or 0-20KOhm
Symptoms of malfunction
A faulty automatic transmission selector position sensor can cause the following symptoms:
* Incorrect gear position indication on the dashboard
* Difficulty shifting gears
* Starter blocking when gear is engaged
* Automatic transmission limp mode
Diagnostics and repair
To diagnose a faulty automatic transmission selector position sensor, you can use an OBD scanner or a multimeter. If the sensor is faulty, it must be replaced.
Replacing the sensor
To replace the automatic transmission selector position sensor, the following steps are usually required:
1. Disconnect the battery.
2. Locate and disconnect the sensor connector.
3. Remove the bolts or latches that hold the sensor in place.
4. Install the new sensor in the reverse order of removal.
5. Connect the battery and check the functionality of the sensor.