Suzuki automatic transmission selector position sensor
Purpose:
The automatic transmission selector position sensor detects the position of the gearshift lever and transmits information to the electronic transmission control module (TCM) to control gear shifting accordingly.
Location:
The sensor is usually located on the automatic transmission housing next to the gear shift lever.
Working principle:
When the shift lever is moved, the sensor actuator moves and causes the sensor resistance to change. This change in resistance is read by the TCM, which then determines the corresponding selector lever position.
Fault codes:
If the shift position sensor fails, the TCM may log the following trouble codes:
* P0705 – Selector position sensor malfunction
* P0715 – Selector Position Sensor Circuit Open
* P0716 – Selector position sensor circuit short circuit to ground
* P0717 – Selector lever position sensor circuit short circuit to positive
Symptoms of malfunction:
* Difficulty shifting gears
*Transmission fault indicator lights up
*No gear shift
* Engine speed fluctuations
Diagnostics:
To diagnose the selector lever position sensor, you can use the following methods:
* Visual Inspection: Check the sensor and wiring for damage or loose connections.
* Resistance measurement: Measure the resistance of the sensor according to its specifications.
* Reading Trouble Codes: Using a trouble code scanner, you can read trouble codes associated with the shift position sensor.
Replacement:
If the selector lever position sensor is faulty, it must be replaced. The replacement process may vary depending on the specific Suzuki model, but typically involves the following steps:
* Disconnect the battery.
* Remove the interior trim around the gear lever.
* Disconnect the shift cable.
* Unscrew the sensor mounting bolts and remove it.
* Install a new sensor.
* Tighten the mounting bolts.
* Connect the shift cable.
* Install the interior trim.
* Connect the battery.