LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2005 >> TL Automatic >> Repair and Diagnosis >> Body & Frame >> Seats >> Driving Position Memory Systems (DPMS) >> DTC Troubleshooting >> DTC B1832: Left Mirror Horizontal Sensor Malfunction
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B1832: Left Mirror Horizontal Sensor Malfunction

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 DTC with the HDS.
  2. Turn the ignition switch OFF, and then back ON (II).
  3. Operate the left power mirror swings right or left with the power mirror switch.
  4. Check for DTCs with the HDS.

    Is DTC B1832 indicated? 

    1. YES  - Go to step  5.
    2. NO  - Intermittent failure, the system is OK at this time.
  5. Turn the ignition switch OFF.
  6. Remove the driver's dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
  7. Remove the driver's and front passenger's door panels (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
  8. Disconnect the power mirror control unit 26P connector.
  9. Disconnect the left and right power mirror 13P connectors.
  10. Check for continuity between the left power mirror connector (13P) No. 9 terminal and body ground.
    Fig 1: Checking Continuity Between Left Power Mirror Connector (13P) No. 9 Terminal & Body Ground
    G03662376Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair a short in the RED/WHT wire.
    2. NO  - Go to step  11.
  11. Connect the power mirror control unit connector (26P) No. 8 terminal to body ground with a jumper wire.
    Fig 2: Connecting Power Mirror Control Unit Connector (26P) No. 8 Terminal To Body Ground
    G03662377Courtesy of AMERICAN HONDA MOTOR CO., INC.
  12. Check for continuity between the left power mirror connector (13P) No. 9 terminal and body ground.
    Fig 3: Checking Continuity Between Left Power Mirror Connector (13P) No. 9 Terminal & Body Ground
    G03662378Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Go to step  13.
    2. NO  - Repair an open in the RED/WHT wire.
  13. Check for continuity between the left power mirror connector (13P) No. 8 terminal and body ground.
    Fig 4: Checking Continuity Between Left Power Mirror Connector (13P) No. 8 Terminal & Body Ground
    G03662379Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair a short in the WHT/BLK wire.
    2. NO  - Go to step  14.
  14. Connect the power mirror control unit connector (26P) No. 4 terminal to body ground with a jumper wire.
    Fig 5: Connecting Power Mirror Control Unit Connector (26P) No. 4 Terminal To Body Ground
    G03662380Courtesy of AMERICAN HONDA MOTOR CO., INC.
  15. Check for continuity between the left power mirror connector (13P) No. 8 terminal and body ground.
    Fig 6: Checking Continuity Between Left Power Mirror Connector (13P) No. 8 Terminal & Body Ground
    G03662381Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Go to step  16.
    2. NO  - Repair an open in the WHT/BLK wire.
  16. Check for continuity between the power mirror control unit connector (26P) No. 7 terminal and body ground.
    Fig 7: Checking Continuity Between Power Mirror Control Unit Connector (26P) No. 7 Terminal & Body Ground
    G03662382Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair a short in the LT GRN/RED wire.
    2. NO  - Go to step  17.
  17. Connect the power mirror control unit connector (26P) No. 7 terminal to body ground with a jumper wire.
    Fig 8: Connecting Power Mirror Control Unit Connector (26P) No. 7 Terminal To Body Ground
    G03662383Courtesy of AMERICAN HONDA MOTOR CO., INC.
  18. Check for continuity between the left power mirror connector (13P) No. 6 terminal and body ground.
    Fig 9: Checking Continuity Between Left Power Mirror Connector (13P) No. 6 Terminal & Body Ground
    G03662384Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Go to step  19.
    2. NO  - Repair an open in the LT GRN/RED wire.
  19. Reconnect the power mirror control unit connector (26P).
  20. Turn the ignition switch ON (II).
  21. Measure voltage between the power mirror control unit connector (26P) No. 8 and No. 7 terminals.
    Fig 10: Measuring Voltage Between Power Mirror Control Unit Connector (26P) No. 8 & No. 7 Terminals
    G03662385Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5 V? 

    1. YES  - Faulty left power mirror position sensor; replace the power mirror actuator (see POWER MIRROR ACTUATOR REPLACEMENT ).
    2. NO  - Substitute a known-good power mirror control unit, and recheck. If DTC is gone, the original power mirror control unit is faulty; replace it.
scientia non olet · About LEMON Manuals