Required tools:
* Multimeter
*Car wiring diagram
Verification procedure:
1. Find the automatic transmission selector sensor:
* It is usually located on the gearbox or steering column.
*Locate the appropriate wiring connector.
2. Disconnect the sensor connector:
* Press the connector latch and pull it out to disconnect.
3. Check resistance:
* Set the multimeter to resistance (ohms) mode.
* Connect the black probe of the device to the car body or to the negative terminal of the battery.
* Connect the red probe of the device to the sensor connector contacts.
4. Compare the readings with those below:
For sensors with two wires:
* Parking position (P): 0-2 ohms
* Neutral position (N): 40-60 ohms
* Drive position (D): 100-120 ohms
* Reverse position (R): 160-180 ohms
For sensors with three wires:
* Parking position (P): 0-2 ohms
* Neutral position (N): 40-60 ohms
* Drive position (D): 0-2 ohms
* Reverse position (R): 0-2 ohms
5. Check the fault:
* If the resistance reading deviates significantly from the specified values, the sensor may be faulty.
*Check for other problems such as corrosion or damaged wiring.
6. Install the new sensor:
* If the sensor is defective, replace it with a new one.
* Connect the sensor connector and install it in place.
7. Reset fault codes:
*After replacing the sensor, you may need to clear trouble codes in the Transmission Control Module (TCM).
Additional tips:
*If you do not have a vehicle wiring diagram, please refer to your repair manual.
* Be careful not to short the wires when connecting the multimeter.
* Always disconnect the battery when working on electrical components.