LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2007 >> MDX >> Repair and Diagnosis >> Body & Frame >> Seats >> Driver Position Memory System (DPMS) >> DTC Troubleshooting >> DTC B2182: Left Power Mirror Horizontal Sensor Signal Error
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B2182: Left Power Mirror Horizontal Sensor Signal 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 ON (II).
  3. Move the left power mirror in each direction with the power mirror switch.
  4. Check for DTCs with the HDS.

    Is DTC B2182 indicated? 

    YES  - Go to step 5.

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

  5. Select POWER SEAT/POWER MIRROR from the BODY ELECTRICAL SYSTEM SELECT menu, and enter the DATA LIST.
  6. Check the NORMAL/ABNORMAL information of the DRIVER DOOR MIRROR HORIZONTAL SENSOR in the DATA LIST.

    Is the information indicator ABNORMAL? 

    YES  - Go to step 7.

    NO  - Replace the driver's MPCS unit.

  7. Turn the ignition switch to LOCK (0).
  8. Disconnect driver's MPCS unit connector A (40P).
  9. Disconnect the left power mirror 16P connector.
  10. Check for continuity between driver's MPCS unit connector A (40P) No. 10 terminal and left power mirror 16P connector No. 4 terminal.
    Fig 1: Identifying Continuity Between Driver'S MPCS Unit Connector A (40P) No. 10 Terminal And Left Power Mirror 16P Connector No. 4 Terminal
    G05488301Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Go to step 11.

    NO  - Repair open in the wire.

  11. Check for continuity between left power mirror 16P connector No. 4 terminal and body ground.
    Fig 2: Identifying Continuity Between Left Power Mirror 16P Connector No. 4 Terminal And Body Ground
    G05488302Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Repair short to ground in the wire.

    NO  - Go to step 12.

  12. Check for continuity between left power mirror 16P connector No. 4 and No. 6 terminals.
    Fig 3: Identifying Continuity Between Left Power Mirror 16P Connector No. 4 And No. 6 Terminals
    G05488303Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Repair short in the wires.

    NO  - Go to step 13.

  13. Reconnect driver's MPCS unit connector A (40P).
  14. Turn the ignition switch ON (II).
  15. Measure the voltage between left power mirror 16P connector No. 4 terminal and body ground.
    Fig 4: Identifying Voltage Between Left Power Mirror 16P Connector No. 4 Terminal And Body Ground
    G05488304Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5 V? 

    YES  - Replace the left power mirror.

    NO  - Replace the driver's MPCS unit.