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Home >> Honda >> 2015 >> Crosstour EX, 3.5L Eng >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 58 (Driver Position Memory System (DPMS) (4-CYL)) >> DTC Troubleshooting >> DTC B1828: Driver Seat Recline Motor Pulse Error

DTC B1828: Driver Seat Recline Motor Pulse Error

WARNING: This page is about a different variant/trim than selected.
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 ).
  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 for several seconds in each direction.
    NOTE: DTC B1828 is stored when the recline switch is operated more than 1 second after the seat moves to the most forward or backward position, even when the system is OK.
  4. Check for DTCs with the HDS.

    Is DTC B1828 indicated? 

    YES  -Go to step 5.

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

  5. Check for the DTCs with the HDS.

    Is DTC B1836 also indicated? 

    YES  -Go to the DTC B1836 TROUBLESHOOTING  (see ).

    NO  -Go to step 6.

  6. Check for the DTCs with the HDS.

    Are DTCs B1825, B1826, and/or B1827 also indicated? 

    YES  -Go to step  17.

    NO  -Go to step 7.

  7. Turn the ignition switch to LOCK (0), and then back to ON (II).
  8. Operate the recline switch for 2 seconds, and check the recline motor operation.

    Does the recline motor run smoothly? 

    YES  -Go to step 9.

    NO  -Go to step  24.

  9. Turn the ignition switch to LOCK (0).
  10. Disconnect power seat control unit connector B (40P).
  11. Disconnect the recline motor/position sensor 5P connector.
  12. Check for continuity between power seat control unit connector B (40P) terminals No. 11 and No. 32 and recline motor/position sensor 5P connector terminals No. 1 and No. 2 respectively.
    Fig 1: Checking Continuity Between Power Seat Control Unit Connector B (40P) Terminals No. 11 And 32 And Recline Motor/Position Sensor 5P Connector Terminals No. 1 And 2
    G08086372Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 13.

    NO  -Repair an open or high resistance in the wire (s).

  13. Check for continuity between body ground and power seat control unit connector B (40P) terminal No. 11.
    Fig 2: Checking Continuity Between Body Ground And Power Seat Control Unit Connector B (40P) Terminal No. 11
    G08086373Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short to ground in the wire.

    NO  -Go to step 14.

  14. Reconnect power seat control unit connector B (40P).
  15. Turn the ignition switch to ON (II).
  16. Measure the voltage between recline motor/position sensor 5P connector terminals No. 1 (+)and No. 2 (-).
    Fig 3: Checking Voltage Between Recline Motor/Position Sensor 5P Connector Terminals No. 1 (+)And 2 (-)
    G08086374Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5 V? 

    YES  -Replace the recline motor/position sensor (see FRONT SEAT RECLINE MOTOR REPLACEMENT ).

    NO  -If there is no voltage, replace the power seat control unit (see POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT  ). If there is battery voltage, repair a short to power in the wire (sensor line).

  17. Turn the ignition switch to LOCK (0).
  18. Disconnect power seat control unit connector B (40P).
  19. Disconnect the recline motor/position sensor 5P connector.
  20. Check for continuity between power seat control unit connector B (40P) terminals No. 6 and No. 32 and recline motor/position sensor 5P connector terminals No. 3 and No. 2 respectively.
    Fig 4: Checking Continuity Between Power Seat Control Unit Connector B (40P) Terminals No. 6 And 32 And Recline Motor/Position Sensor 5P Connector Terminals No. 3 And 2
    G08086375Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 21.

    NO  -Repair an open or high resistance in the wire (s).

  21. Reconnect power seat control unit connector B (40P).
  22. Turn the ignition switch to ON (II).
  23. Measure the voltage between power seat control unit connector B (40P) terminals No. 6 and No. 32.
    Fig 5: Checking Voltage Between Power Seat Control Unit Connector B (40P) Terminals No. 6 And 32
    G08086376Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage when the recline switch is operated? 

    YES  -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  ).

  24. Turn the ignition switch to LOCK (0).
  25. Check the No. B21 (20 A) fuse in the driver's under-dash fuse/relay box.

    Is the fuse OK? 

    YES  -Go to step 26.

    NO  -Replace the fuse. If the fuse blows again, repair a short to ground on the No. B21 (20 A) fuse circuit.

  26. Turn the ignition switch to ON (II).
  27. Measure the voltage to body ground between body ground and power seat control unit connector A (18P) terminal No. 8.
    Fig 6: Measuring Voltage To Body Ground Between Body Ground And Power Seat Control Unit Connector A (18P) Terminal No. 8
    G08086377Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Go to step 28.

    NO  -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the power seat control unit.

  28. Measure the voltage to body ground at power seat control unit terminal No. 5 when the recline switch is operated.
    Fig 7: Measuring Voltage To Body Ground At Power Seat Control Unit Terminal No. 5
    G08086378Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there 0.2 V or more? 

    YES  -Repair an open or high resistance in the wire between the power seat control unit and body ground (G801).

    NO  -Go to step 29.

  29. Turn the ignition switch to LOCK (0).
  30. Disconnect power seat control unit connector A (18P).
  31. Disconnect the recline motor/position sensor 5P connector.
  32. Check for continuity between power seat control unit connector A (18P) terminals No. 16 and No. 18 and recline motor/position sensor 5P connector terminals No. 4 and No. 5 respectively.
    Fig 8: Continuity Between Power Seat Control Unit Connector A (18P) Terminals No. 16 And 18 And Recline Motor/Position Sensor 5P Connector Terminals No. 4 And 5
    G08086379Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 33.

    NO  -Repair an open or high resistance in the wire (s).

  33. Check for continuity between body ground and recline motor/position sensor 5P connector terminals No. 4 and No. 5 individually.
    Fig 9: Checking Continuity Between Body Ground And Recline Motor/Position Sensor 5P Connector Terminals No. 4 And 5
    G08086380Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short to ground in the wire (s).

    NO  -Go to step 34.

  34. Do the recline motor test (see DRIVER'S POWER SEAT MOTOR TEST  ).

    Is the motor OK? 

    YES  -Replace the power seat control unit (see POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT  )M

    NO  -Replace the recline motor/position sensor (see FRONT SEAT RECLINE MOTOR REPLACEMENT ).

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