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Home >> Acura >> 2007 >> TL Base >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Driver Position Memory System (DPMS) >> 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. Turn the ignition switch OFF and then back ON (II).
  2. Clear the DTCs with the HDS.
  3. Operate the power seat adjustment switch in all directions for more than 1 second each.
  4. Check for DTCs with the HDS.

    Is DTC B1825 indicated? 

    YES  -Go to step 5.

    NO  -Intermittent failure. The slide position sensor is OK at this time. Check for loose or poor connections at the power seat control unit connector.

  5. Clear the DTCs with the HDS.

    Are DTCs B1826, B1827 and/or B1828 also indicated? 

    YES  -Go to step  17.

    NO  -Go to step 6.

  6. Clear the DTCs with the HDS.
  7. Turn the ignition switch OFF, and then back 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 OFF.
  10. Disconnect power seat control unit connector A (20P).
  11. Disconnect the slide position sensor, 3P connector.
  12. Check for continuity between power seat control unit connector A (20P) No. 2 and No. 11 terminals and slide position sensor 3P connector No. 1 and No. 2 terminals individually.
    Fig 1: Checking Continuity Between Power Seat Control Unit No. 2 And No. 11 Terminals And Slide Position Sensor No. 1 And 2 Terminals
    G05462898Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 13.

    NO  -Repair an open in the wire.

  13. Check for continuity between power seat control unit connector A (20P) No. 2 terminal and body ground.
    Fig 2: Checking Continuity Between Power Seat Control Unit Connector A (20P) No. 2 Terminal And Body Ground
    G05462899Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short in the wire.

    NO  -Go to step 14.

  14. Reconnect the power seat control unit connector A (20P).
  15. Turn the ignition switch ON (II).
  16. Measure the voltage between slide position sensor 3P connector No. 1 and No. 2 terminals.
    Fig 3: Measuring Voltage Between Slide Position Sensor 3P Connector No. 1 And No. 2 Terminals
    G05462900Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5 V? 

    YES  -Faulty slide position sensor, replace the slide motor assembly.

    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 ignition switch OFF.
  18. Disconnect power seat control unit connector A (20P).
  19. Disconnect the slide position sensor 3P connector.
  20. Check for continuity between power seat control unit connector A (20P) No. 1 and No. 11 terminals and slide position sensor 3P connector No. 3 and No. 2 terminals individually.
    Fig 4: Checking Continuity Between Power Seat Control Unit No. 1 And No. 11 Terminals And Slide Position Sensor No. 3 And No. 2 Terminals
    G05462901Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 21.

    NO  -Repair an open in the wire.

  21. Disconnect the 5P connectors from the recline motor/position sensor, the front up-down motor/ position sensor, and the rear up-down motor/ position sensor.
  22. Check for continuity between slide position sensor 3P connector No. 3 terminal and body ground.
    Fig 5: Checking Continuity Between Slide Position Sensor 3P Connector No. 3 Terminal And Body Ground
    G05462902Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short in the wire.

    NO  -Go to step 23.

  23. Reconnect power seat control unit connector A (20P).
  24. Turn the ignition switch ON (II).
  25. Measure the voltage between power seat control unit connector A (20P) No. 1 and No. 11 terminals.
    Fig 6: Measuring Voltage Between Power Seat Control Unit Connector A (20P) No. 1 And 11 Terminals
    G05462903Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage when the slide switch is operated? 

    YES  -Faulty slide position sensor, replace the slide motor assembly.

    NO  -Replace the power seat control unit.

  26. Turn the ignition switch OFF.
  27. Disconnect power seat control unit connector B (8P).
  28. Disconnect the slide motor 2P connector.
  29. Check for continuity between power seat control unit connector B (8P) No. 1 and No. 5 terminals and slide motor 2P connector No. 2 and No. 1 terminals individually.
    Fig 7: Checking Continuity Between Power Seat Control Unit No. 1 And No. 5 Terminals And Slide Motor No. 2 And 1 Terminals
    G05462904Courtesy of AMERICAN HONDA MOTOR CO., INC.

    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 2P connector No. 1 and No. 2 terminals individually.
    Fig 8: Checking Continuity Between Body Ground And Slide Motor 2P Connector No. 1 And 2 Terminals
    G05462905Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short 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.

    NO  -Replace the slide motor.

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