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Home >> Acura >> 2010 >> TSX 3.5 4 >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Driver Position Memory System (DPMS) (V6) >> DTC Troubleshooting >> DTC B1828: Power Seat Recline Motor Pulse Error
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DTC B1828: Power Seat Recline Motor Pulse Error

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 in all directions for more than 1 second each.
    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 the 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. Clear the DTCs with the HDS.

    Is DTC B1836 also indicated? 

    YES  -Go to the DTC B1836 TROUBLESHOOTING .

    NO  -Go to step 6.

  6. Clear 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  26.

  9. Turn the ignition switch to LOCK (0).
  10. Disconnect power seat control unit connector A (40P).
  11. Disconnect the recline motor/position sensor 5P connector.
  12. Check for continuity between power seat control unit connector A (40P) terminals No. 10 and No. 29 and recline motor/position sensor 5P connector terminals No. 5 and No. 4 respectively.
    Fig 1: Checking Continuity Between Power Seat Control Unit Connector A (40P) Terminals 10 And 29 And Recline Motor
    G06427843

    Is there continuity? 

    YES  -Go to step 13.

    NO  -Repair an open in the wire.

  13. Check for continuity between body ground and power seat control unit connector A (40P) terminal No. 10.
    Fig 2: Checking Continuity Between Body Ground And Power Seat Control Unit Connector A (40P) Terminal No. 10
    G06427844

    Is there continuity? 

    YES  -Repair a short to ground in the wire.

    NO  -Go to step 14.

  14. Reconnect power seat control unit connector A (40P).
  15. Turn the ignition switch to ON (II).
  16. Measure the voltage between recline motor/position sensor 5P connector terminals No. 5 (+) and No. 4 (-).
    Fig 3: Measuring Voltage Between Recline Motor/Position Sensor 5P Connector Terminals No. 5 And 4
    G06427845

    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 in the wire (sensor line).

  17. Turn the ignition switch to LOCK (0).
  18. Disconnect power seat control unit connector A (40P).
  19. Disconnect the recline motor/position sensor 5P connector.
  20. Check for continuity between power seat control unit connector A (40P) terminals No. 15 and No. 29 and recline motor/position sensor 5P connector terminals No. 3 and No. 4 respectively.
    Fig 4: Checking Continuity Between Power Seat Control Unit Connector A (40P) Terminals No. 15 And No. 29
    G06427846

    Is there continuity? 

    YES  -Go to step 21.

    NO  -Repair an open in the wire.

  21. Disconnect the 5P connector from the slide motor/position sensor, front up-down motor/position sensor, and rear up-down motor/position sensor.
  22. Check for continuity between body ground and recline motor/position sensor 5P connector terminal No. 3.
    Fig 5: Checking Continuity Between Body Ground And Recline Motor/Position Sensor 5P Connector Terminal 3
    G06427847

    Is there continuity? 

    YES  -Repair a short to ground in the wire.

    NO  -Go to step 23.

  23. Reconnect power seat control unit connector A (40P).
  24. Turn the ignition switch to ON (II).
  25. Measure the voltage between power seat control unit connector A (40P) terminals No. 15 and No. 29.
    Fig 6: Measuring Voltage Between Power Seat Control Unit Connector A (40P) Terminals No. 15 And No. 29
    G06427848

    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  ).

  26. Turn the ignition switch to LOCK (0).
  27. Disconnect power seat control unit connector B (18P).
  28. Disconnect the recline motor/position sensor 5P connector.
  29. Check for continuity between power seat control unit connector B (18P) terminals No. 9 and No. 11 and recline motor/position sensor 5P connector terminals No. 1 and No. 2 respectively.
    Fig 7: Checking Continuity Between Power Seat Control Unit Connector B (18P) Terminals 9 And 11
    G06427849

    Is there continuity? 

    YES  -Go to step 30.

    NO  -Repair an open in the wire.

  30. Check for continuity between body ground and recline motor/position sensor 5P connector terminals No. 1 and No. 2 individually.
    Fig 8: Checking Continuity Between Body Ground And Recline Motor/Position Sensor 5P Connector Terminals No. 1 And No. 2
    G06427850

    Is there continuity? 

    YES  -Repair a short to ground in the wire.

    NO  -Go to step 31.

  31. Test the recline motor (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  ).

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

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