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 (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0), and then back to ON (II).
Operate the power seat adjustment switch in all directions for more than 1 second each.
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.
Turn the ignition switch to LOCK (0).
Disconnect these connectors:
- Power seat control unit connector B (40P)
- 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
Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 6.

Fig 1: Checking Continuity Between Body Ground And Power Seat Control Unit Connector B (40P) Terminal No. 6
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to ground in the wire.

NO -Go to step 8.
Check for continuity between body ground (motor body) and the slide motor/position sensor connector terminal No. 4.

Fig 2: Checking Continuity Between Body Ground (Motor Body) And Slide Motor/Position Sensor Connector Terminal No. 4
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Faulty slide motor; replace the slide motor/position sensor (see FRONT SEAT SLIDE MOTOR REPLACEMENT ).

NO -Go to step 9.
Check for continuity between body ground (motor body) and the front or rear up-down motor/position sensor, and recline motor/position sensor connector terminal No. 3.

Fig 3: Checking Continuity Between Body Ground And Front Or Rear Up-Down Motor/Position Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -If the front or rear up-down position sensor is faulty, replace the seat frame assembly (see FRONT SEAT FRAME REPLACEMENT ). If the recline position sensor is faulty, replace the recline motor/position sensor (see FRONT SEAT RECLINE MOTOR REPLACEMENT ).

NO -Replace the power seat control unit (see POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT ).