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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 B1825: Power Seat Slide Motor Pulse Error
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DTC B1825: Power Seat Slide 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 for several seconds in each direction.
    NOTE: DTC B1825 is stored when the slide 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 B1825 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 B1826, B1827, and/or B1828 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 slide switch for 2 seconds, and check the slide motor operation.

    Does the slide 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 slide motor/position sensor 5P connector.
  12. Check for continuity between power seat control unit connector A (40P) terminals No. 29 and No. 31 and slide motor/position sensor 5P connector terminals No. 3 and No. 4 respectively.
    Fig 1: Checking Continuity Between Power Seat Control Unit Connector A (40P) Terminals No. 29 And No. 31
    G06427819

    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. 31.
    Fig 2: Checking Continuity Between Body Ground And Power Seat Control Unit Connector A (40P) Terminal No. 31
    G06427820

    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 slide motor/position sensor 5P connector terminals No. 4 (+) and No. 3 (-).
    Fig 3: Measuring Voltage Between Slide Motor/Position Sensor 5P Connector Terminals No. 4 And 3
    G06427821

    Is there about 5 V? 

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

    NO  -If there is no voltage, replace the power seat control unit. 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 slide motor/position sensor 5P connector.
  20. Check for continuity between power seat control unit connector A (40P) terminals No. 15 and No. 29 and slide motor/position sensor 5P connector terminals No. 2 and No. 3 respectively.
    Fig 4: Checking Continuity Between Power Seat Control Unit Connector A (40P) Terminals 15 And 29 And Slide Motor
    G06427822

    Is there continuity? 

    YES  -Go to step 21.

    NO  -Repair an open in the wire.

  21. Disconnect the 5P connector from the front up-down motor/position sensor, rear up-down motor/position sensor, and recline motor/position sensor.
  22. Check for continuity between body ground and slide motor/position sensor 5P connector terminal No. 2.
    Fig 5: Checking Continuity Between Body Ground And Slide Motor/Position Sensor 5P Connector Terminal No. 2
    G06427823

    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
    G06427824

    Is there battery voltage when the slide switch is operated? 

    YES  -Replace the slide motor/position sensor (see FRONT SEAT SLIDE 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 slide motor/position sensor 5P connector.
  29. Check for continuity between power seat control unit connector B (18P) terminals No. 7 and No. 17 and slide motor/position sensor 5P connector terminals No. 1 and No. 5 respectively.
    Fig 7: Checking Continuity Between Power Seat Control Unit Connector B (18P) Terminals 7 And 17
    G06427825

    Is there continuity? 

    YES  -Go to step 30.

    NO  -Repair an open in the wire.

  30. Check for continuity between body ground and slide motor/position sensor 5P connector terminals No. 1 and No. 5 individually.
    Fig 8: Checking Continuity Between Body Ground And Slide Motor/Position Sensor 5P Connector Terminals 1 And 5
    G06427826

    Is there continuity? 

    YES  -Repair a short to ground in the wire.

    NO  -Go to step 31.

  31. Test the slide 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 slide motor/position sensor (see FRONT SEAT SLIDE MOTOR REPLACEMENT ).

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