Electronic Brake Control Module: Service and Repair

VSA Modulator-Control Unit Removal and Installation

NOTE:
^ Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water.
^ Be careful not to damage or deform the brake lines during removal and installation.
^ To prevent the brake fluid from flowing, plug and cover the hose ends and joints with a shop towel or equivalent material.

Removal

1. Turn the ignition switch OFF.
2. Disconnect the VSA modulator-control unit 47P connector (A) by pushing the lock (B) and pulling up the lever (C); the connector disconnects itself.





3. Disconnect the six brake lines from the VSA modulator-control unit (D).
4. Remove the VSA modulator-control unit with the bracket (E) from the body.
5. Remove the VSA modulator-control unit from the bracket.

Installation

1. Install the VSA modulator-control unit on the bracket, then tighten the two 6 mm bolts and the hex bolt.
2. Install the VSA modulator-control unit/bracket on the body, then tighten the three 6 mm bolts.
3. Reconnect the six brake lines, then tighten the nuts.
4. Align the connecting surface of the VSA modulator-control unit 47P connector.
5. Carefully push in the lock of the VSA modulator-control unit 47P connector until you hear it click into place, then confirm the connector is fully seated.
6. Bleed the brake system, starting with the front wheels.
7. Do the VSA sensor neutral position memorization. Programming and Relearning
8. Start the engine, and check that the ABS and VSA indicators go off.
9. Test-drive the vehicle, and check that the ABS and VSA indicators do not come on.

NOTE: If the brake pedal is spongy, there may be air trapped in the modulator and then induced in to the normal brake system during modulation. Bleed the brake system again.