Transmission Position Sensor/Switch: Testing and Inspection

Operational Inspection
1. Turn the ignition switch to ON.




2. Shift the selector lever and verify that the selected range and selector indicator light (built into combination meter) positions are aligned.
3. Apply the parking brake and securely position wheel chocks to prevent the vehicle from rolling.
4. Verify that the starter operates with the ignition switch at START position and with the selector lever in P and N ranges only.
5. Verify that the back-up lights illuminate when the selector lever is shifted to R range with the ignition switch at the ON position.
6. If not as specified, check the park/neutral switch continuity.

Continuity Inspection
1. Disconnect the negative battery cable and the park/neutral switch connector.




2. Remove the park/neutral switch connector from the bracket.
3. Check continuity of the park/neutral switch terminals.




4. If not correct, adjust or replace the park/neutral switch.
5. Install the park/neutral switch connector to the bracket.
6. Connect the park/neutral switch connector and the negative battery cable.

Troubleshooting Tips
If a malfunction occurs in the wiring of the park/neutral switch, the powertrain control module (transmission) cannot determine the range position, and shifting may be abnormal in D, S, and L ranges. There may not be a shift to fourth gear.

Switch Contacts




P,N-Range




R-Range




L-Range




S-Range




D-Range