Selector lever position sensor, automatic transmission Lada Granta
Purpose:
The automatic transmission selector position sensor (APSS) is designed to determine the position of the automatic transmission selector lever and transmit this information to the automatic transmission electronic control unit (ECU).
Location:
DPSS is located on the automatic transmission housing next to the selector lever, and is connected to it using a stranded wire.
Working principle:
The sensor consists of a potentiometer that changes its resistance depending on the position of the selector lever. The automatic transmission ECU constantly reads the resistance at the sensor contacts and determines the position of the selector.
Connectors:
DPSS has a 3-pin connector:
* 1 – ground
* 2 – signal
* 3 – power supply (+12V)
Signs of malfunction:
* Incorrect determination of the automatic transmission selector position
* Inability to change gears
* Jerks and jerks when changing gears
* The automatic transmission fault indicator lights up on the dashboard
Diagnostics and replacement:
To diagnose a DPSS malfunction, you must use a diagnostic scanner and check the sensor signal parameters. If the parameters are not normal, the sensor must be replaced.
Replacement procedure:
1. Disconnect the battery.
2. Disconnect the connector from the sensor.
3. Unscrew the bolts securing the sensor to the automatic transmission housing.
4. Install the new sensor and secure it with bolts.
5. Connect the connector.
6. Connect the battery.
7. Reset automatic transmission ECU errors using a diagnostic scanner.