VARIABLE TUMBLE CONTROL SYSTEM (VTCS) SHUTTER VALVE ACTUATOR INSPECTION [LF, L3]

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1. Remove the air hose. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [LF, L3].)

2. Disconnect the vacuum hose from the VTCS shutter valve actuator.

3. Connect a vacuum pump to the VTCS shutter valve actuator.

4. Apply vacuum and verify that the rod moves.

• If the rod does not move, replace the intake manifold.

Vacuum

kPa {mmHg, inHg}

Rod movement

Below -2.7 {-20, -0.7}
Fully returned
Above -33.7 {-251, -9.9}
Fully pulled