CAMSHAFT OIL CONTROL VALVE ON-VEHICLE INSPECTION

PROCEDURE

  1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

    1. for Intake Side

      1. Connect the GTS to the DLC3.

      2. Start the engine.

      3. Turn the GTS on.

      4. Turn the A/C switch on.

      5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1).

        Powertrain > Engine and ECT > Active Test

        Tester Display

        Control the VVT Linear (Bank1)

      6. Check the engine speed while operating the camshaft timing oil control valve assembly (for intake side) using the GTS.

        Standard Condition

        GTS Operation

        Specified Condition

        0%

        Normal engine speed

        100%

        Engine idles roughly or stalls
        Tip:

        • If the result is not as specified, allow the engine to cool (engine coolant temperature of 50°C (122°F) or less) and perform the Active Test again.

        • DTCs related to the VVT system may be stored due to Active Test operation, but this does not indicate a malfunction.

        If the result is not as specified, check the camshaft timing oil control valve assembly, wire harness and ECM.

    2. for Exhaust Side

      1. Connect the GTS to the DLC3.

      2. Start the engine.

      3. Turn the GTS on.

      4. Turn the A/C switch on.

      5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1).

        Powertrain > Engine and ECT > Active Test

        Tester Display

        Control the VVT Exhaust Linear (Bank1)

      6. Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust side) using the GTS.

        Standard Condition

        GTS Operation

        Specified Condition

        0%

        Normal engine speed

        100%

        Engine idles roughly or stalls
        Tip:

        • If the result is not as specified, allow the engine to cool (engine coolant temperature of 50°C (122°F) or less) and perform the Active Test again.

        • DTCs related to the VVT system may be stored due to Active Test operation, but this does not indicate a malfunction.

        If the result is not as specified, check the camshaft timing oil control valve assembly, wire harness and ECM.