Automatic transmission selector position sensor
Diagnostics:
* Flashing sequence of the automatic transmission fault indicator (usually displayed on the dashboard).
* Errors detected using the diagnostic scanner.
* Problems with gear shifting or selector position compliance.
Possible causes of the malfunction:
* Malfunction of the electrical components of the sensor (wiring, contacts).
* Damage to the internal mechanism of the sensor.
* Malfunction of the automatic transmission electronic control unit.
Repair:
1. Checking and troubleshooting wiring:
* Check wiring and connectors for damage, corrosion or poor contacts.
* Repair or replace damaged components.
2. Repair or replacement of the sensor:
* Remove the automatic transmission selector position sensor.
* Check the internal mechanism and electrical components for damage.
* If a malfunction is detected, replace the sensor with a new one.
3. Resetting the electronic control unit (ECU) of the automatic transmission:
* After repairing or replacing the sensor, it is necessary to reset the automatic transmission ECU so that the system learns to recognize the new selector position.
*The reset procedure varies by vehicle model and may involve disconnecting the battery, using a diagnostic scanner, or performing certain shift sequences.
4. Checking operation:
* After repair or replacement, start the engine and change gears to different positions.
* Make sure that the sensor correctly detects the selector position and that the gears shift smoothly.
*Check for any alerts or errors related to the automatic transmission.
Adviсe:
*Always refer to the repair manual for your specific vehicle model for exact instructions.
* When working with electrical components, use caution and insulate yourself from contact with exposed wires.
*If you are unsure of your repair skills, seek assistance from a qualified mechanic.