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 DTC with the HDS.
Turn the ignition switch OFF, and then back ON (II).
Operate the power seat adjustment switch in each direction 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 driving position memory system is OK at this time. Check for loose or poor connections at the power seat control unit connectors.
Turn the ignition switch OFF.
Disconnect power seat control unit connector A (40P).
Disconnect the slide position sensor 3P connector and each 5P connector from the recline motor/position sensor, the front up-down motor/position sensor, and the rear up-down motor/position sensor.
Check for continuity between power seat control unit connector A (40P) terminal No. 15 and body ground.

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

Is there continuity?

YES - Repair a short to ground in the wire.

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

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

Fig 3: Checking 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.