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 slide switch in each direction for more than 2 seconds.
Check for DTCs with the HDS.
Is DTC B1836 indicated?

YES - Go to step 5.

NO - Intermittent failure. The driving position memory system is OK at this time. Check for loose or poor connections at the power seat control unit connector.
Turn the ignition switch to LOCK (0).
Disconnect power seat control unit connector A (40P).
Disconnect the slide position sensor 3P connector and the 5P connectors from the recline motor/ position sensor, front up-down motor/position sensor, and rear up-down motor/position sensor.
Check for continuity between power seat control unit connector A (40P) No. 15 terminal and body ground.

Fig 1: Identifying Continuity Between Power Seat Control Unit Connector A (40P) No. 15 Terminal And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair short to ground in the wire.

NO - Go to step 9.
At the sensor end, check for continuity between the No. 3 terminal of each position sensor and body ground (motor body).

Fig 2: Identifying Continuity Between No. 3 Terminal Of Position Sensor And Body Ground (1 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: Identifying Continuity Between No. 3 Terminal Of Position Sensor And Body Ground (2 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Replace the motor/position sensor that has continuity.

NO - Replace the power seat control unit.