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).

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).

6. Disconnect these connectors:

- Slide motor/position sensor 5P connector
- Front up-down motor/position sensor 5P connector
- Rear up-down motor/position sensor 5P connector
- Recline motor/position sensor 5P connector

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





Is there continuity?

YES -

Repair a short to ground in the wire.

NO -

Go to step 8.

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





Is there continuity?

YES -

If the front or rear up-down motor/position sensor is faulty, replace the faulty front up-down motor/position sensor Front Seat Up-Down Motor Replacement, rear up-down motor/position sensor. If the recline motor/position sensor is faulty, replace the recline motor/position sensor.

NO -

Go to step 9.

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





Is there continuity?

YES -

Repair the slide motor/position sensor Front Seat Slide Motor Replacement.

NO -

Replace the power seat control unit Testing and Inspection.