B1836

DTC Troubleshooting: B1836

DTC B1836: Power Seat Position Sensor Circuit Short

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. Troubleshooting - B-CAN System Diagnosis Test Mode A

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.

3. Operate the power seat adjustment switch in all directions for more than 1 second each.

4. Check for DTCs with the HDS.

Is DTC B1836 indicated?
YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.


5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

6. Disconnect power seat control unit connector B (40P).

7. Disconnect the 5P connector from each motor.

8. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 15.

Is there continuity?
YES - Repair short to ground in the wire.

NO - Go to step 9.






9. Check for continuity between body ground (motor body) and terminal No. 2 of the slide motor/position sensor.

Is there continuity?
YES - Repair or replace the slide motor/position sensor. Front Seat Slide Motor Replacement

NO - Go to step 10.






10. Check for continuity between body ground (motor body) and terminal No. 3 of the front up-down motor/position sensor, rear up-down motor/position sensor, and recline motor/position sensor.

Is there continuity?
YES - If the front or rear up-down motor/position sensor is faulty, replace the seat frame assembly. If the recline motor/position sensor is faulty, replace the recline motor/position sensor.

NO - Replace the power seat control unit. Testing and Inspection