ACTIVE CONTROL ENGINE MOUNT ON-VEHICLE INSPECTION

  1. INSPECT FRONT ENGINE MOUNTING INSULATOR ASSEMBLY

    1. Check the operation.

      1. Connect the Techstream to DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the Techstream on.

      4. Enter the following menus: Powertrain / Engine / Active Test / Control the ACM Inhibit.

        Tester Display Test Part Control Range Diagnostic Note
        Control the ACM Inhibit ACM ON / OFF Test is possible while engine is idling

      5. Check if the front engine mounting insulator assembly operates in accordance with tester operation.

        Result
        Condition Specified Condition
        "Control the ACM Inhibit" is OFF The engine does not move (insulator operation is normal).
        "Control the ACM Inhibit" is ON The engine moves in accordance with insulator operation.

        Tech Tips

        While "Control the ACM Inhibit" is ON, the front engine mounting insulator assembly operates repeatedly.

    2. Inspect for vacuum leaks.

      1. Disconnect the vacuum hose from the front engine mounting insulator assembly.

      2. Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 25 in.Hg) and wait for 1 minute.

        A011UKL

      3. Check that there is no change in the needle movement of the vacuum pump gauge.

        OK
        Vacuum pressure holds.

      4. Check that there is no fluid leakage caused by a break in the diaphragm.

      5. Reconnect the vacuum hose.