2012 Acura MDXFACTORY OEM SERVICE PROCEDURE

VSA Modulator-Control Unit Removal and Installation: Installation

  1. Install the new bushing and new grommets (Otherwise, unwanted noise and vibration may be transmitted to the vehicle).
  2. Install the VSA modulator-control unit on the bracket, then install new locknuts.
  3. Install the bracket with the VSA modulator-control unit.
  4. Reconnect the six brake lines, then tighten the flare nuts to the specified torque.
  5. Align the connecting surface of the VSA modulator-control unit 46P connector to the VSA modulator-control unit.
  6. Lower the lock of the VSA modulator-control unit 46P connector, then confirm the connector is fully seated.
  7. Reinstall the air cleaner box (see AIR CLEANER REMOVAL/INSTALLATION ).
  8. Bleed the brake system (see MAJOR ADJUSTMENT (TO BE DONE WHEN REPLACING PARKING BRAKE SHOES AND AFTER LINING SURFACE BREAK-IN) ).
  9. Do the VSA sensor neutral position memorization procedure (see VSA SENSOR NEUTRAL POSITION MEMORIZATION  ).
  10. Start the engine, and check that the ABS, the VSA indicators, and the trailer stability assist warning goes off.
  11. Test-drive the vehicle, and check that the ABS, the VSA indicators, and the trailer stability assist warning do not come on.
    NOTE: If the brake pedal is spongy, there may be air trapped in the modulator which could then be induced into the normal brake system during modulation. Bleed the brake system again (see MAJOR ADJUSTMENT (TO BE DONE WHEN REPLACING PARKING BRAKE SHOES AND AFTER LINING SURFACE BREAK-IN) ).
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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