2012 Acura MDXFACTORY OEM SERVICE PROCEDURE

VSA Off Switch Test/Replacement

  1. Turn the ignition switch to LOCK (0).
  2. Remove the driver's dashboard undercover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
  3. Push out the VSA OFF switch (A) from the back of the instrument panel.
    Fig 1: Identifying VSA OFF Switch
    G08053165Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Disconnect the VSA OFF switch 5P connector (except Canada models with ACC) (B) or VSA OFF switch 13P connector (Canada models with ACC).
  5. Check for continuity between the VSA OFF switch 5P connector terminals No. 1 and No. 2 (except Canada models with ACC) or VSA OFF switch 13P connector terminals No. 11 and No. 12 (Canada models with ACC). There should be continuity when the button is released, and no continuity when the button is pressed.
    Fig 2: Checking Continuity Between VSA OFF Switch 5P Connector Terminals No. 1 And No. 2 And VSA OFF Switch 13P Connector Terminals No. 11 And No. 12
    G08053166Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. Check for continuity between the VSA OFF switch 5P connector terminals No. 4 and No. 5 (except Canada models with ACC) or VSA OFF switch 13P connector terminals No. 1 and No. 5 (Canada models with ACC). There should be continuity at all times.
    Fig 3: Checking Continuity Between VSA OFF Switch 5P Connector Terminals No. 4 And No. 5 And VSA OFF Switch 13P Connector Terminals No. 1 And No. 5
    G08053167Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Install the reverse order of removal.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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