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Power Mirror Switch Function Test

  1. Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
  2. Disconnect the 13P connector (A) from the power mirror switch (B), and inspect the terminals. If OK, Go to step 3.
    Fig 1: Identifying Power Mirror Switch 13P Connector Terminals
    G05968896Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Choose the appropriate test based on the symptom:
    • Both mirrors don't work, Go to step 4.
    • Left mirror doesn't work, Go to step  6.
    • Right mirror doesn't work, Go to step  7.
    • Defoggers don't work, Go to step  8.

    Both mirrors 

  4. Reconnect the power mirror switch 13P connector, and measure the voltage between the terminal No. 2 and body ground with the ignition switch ON (II) while operating the power mirror switch. There should be battery voltage.
    • If there is no battery voltage, check for:
      • Blown No. 30 (10 A) fuse in the under-dash fuse/relay box.
      • An open in the BLK/YEL wire.
    • If there is battery voltage, Go to step 5.
  5. Measure the voltage between the terminal No. 6 and body ground while operating the power mirror switch.

    There should be less than 0.2 V.

    • If there is 0.2 V or more, check for:
      • An open or high resistance in the BLK wire.
      • Poor ground (G 501) or an open in the ground wire.
    • If the voltage is as specified, check both mirrors individually as described in step 6 and 7.

    Left mirror 

  6. Connect terminal No. 2 to terminal No. 10, and terminal No. 5 (or No. 12) to body ground with jumper wires. The left mirror should tilt down (or swing left) with the ignition switch to ON (II).
    • If the mirror does not tilt down (or does not swing left), check for an open in the GRN/WHT (or BLU/WHT) wire between the left mirror and the 13P connector. If the wire is OK, check the left mirror actuator.
    • If the mirror neither tilts down nor swings left, check for an open in the BLU/BLK wire.
    • If the mirror works properly, check the mirror switch.

    Right mirror 

  7. Connect terminal No. 2 to terminal No. 11, and terminal No. 5 (or No. 13) to body ground with jumper wires. The right mirror should tilt down (or swing left) with the ignition switch to ON (II).
    • If the mirror does not tilt down (or does not swing left), check for an open in the GRN/WHT (or WHT/RED) wire between the right mirror and the 13P connector. If the wire is OK, check the right mirror actuator.
    • If the mirror neither tilts down nor swings left, check for an open in the RED/YEL wire.
    • If the mirror works properly, check the mirror switch.

    Defogger (USA models: RTL, Canada models: LX, EXL) 

  8. Connect the terminals No. 1 and No. 8 with a jumper wire, and measure the voltage between the No. 1 terminal and body ground. There should be battery voltage and both mirrors should warm up with the ignition switch to ON (II).
    • If there is no voltage or neither warms up, check for:
      • An open in the BLK/YEL and ORN wires.
      • Blown No. 30 (10 A) fuse in the under-dash fuse/relay box.
      • Poor ground (G 402, G501).
    • If only one fails to warm up, check its defogger.
    • If both warm up, check the defogger switch.
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