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Home >> Acura >> 2008 >> TSX Standard >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Driver Position Memory System (DPMS) >> DTC Troubleshooting >> DTC B1825: Power Seat Slide Motor Pulse Error ('07-08 models)

DTC B1825: Power Seat Slide Motor Pulse Error ('07-08 models)

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 (40P).
  11. Disconnect the slide position sensor, 3P connector.
  12. Check for continuity between power seat control unit connector A (40P) terminals No. 11 and No. 29 and slide position sensor 3P connector terminals No. 1 and No. 2 respectively.
    Fig 1: Checking Continuity Between Power Seat Control Unit Connector A (40P) Terminals No. 11 And No. 29
    G05489103Courtesy 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 (40P) terminal No. 11 and body ground.
    Fig 2: Checking Continuity Between Power Seat Control Unit Connector A (40P) Terminal No. 11 And Body Ground
    G05489104Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Repair a short in the wire.

    NO  - Go to step 14.

  14. Reconnect power seat control unit connector A (40P).
  15. Turn the ignition switch ON (II).
  16. Measure the voltage between slide position sensor 3P connector terminals No. 1 and No. 2.
    Fig 3: Measuring Voltage Between Slide Position Sensor 3P Connector Terminals No. 1 And No. 2
    G05489105Courtesy 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 (40P).
  19. Disconnect the slide position sensor 3P connector.
  20. Check for continuity between power seat control unit connector A (40P) terminals No. 15 and No. 29 and slide position sensor 3P connector terminals No. 3 and No. 2 respectively.
    Fig 4: Checking Continuity Between Power Seat Control Unit Connector A (40P) Terminals No. 15 And No. 29
    G05489106Courtesy 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 terminal No. 3 and body ground.
    Fig 5: Checking Continuity Between Slide Position Sensor 3P Connector Terminal No. 3 And Body Ground
    G05489107Courtesy 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 (40P).
  24. Turn the ignition switch 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
    G05489108Courtesy 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 (18P).
  28. Disconnect the slide motor 2P connector.
  29. Check for continuity between power seat control unit connector B (18P) terminals No. 7 and No. 17 and slide motor 2P connector terminals No. 1 and No. 2 respectively.
    Fig 7: Checking Continuity Between Power Seat Control Unit Connector B (18P) Terminals No. 7 And No. 17
    G05489109Courtesy 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 terminals No. 1 and No. 2 individually.
    Fig 8: Checking Continuity Between Body Ground And Slide Motor 2P Connector Terminals No. 1 And No. 2
    G05489110Courtesy 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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