Park Avenue V6-3.8L SC VIN 1 (2005)
bypass valve actuator at the lower side to counteract the spring tension, opening the bypass valve and recirculating excess boost pressure back into the
supercharger inlet.
RESULTS OF INCORRECT OPERATION
An open boost control solenoid control circuit, an open ignition 1 circuit, or boost control solenoid valve stuck open will cause reduced engine power,
especially during wide open throttle operation.
The boost control solenoid control circuit shorted to ground, boost control solenoid valve stuck closed or a restriction in the boost source or signal
hoses will cause full boost to be commanded at all times and a possible overboost condition during high engine load situations.
A restriction in the vacuum signal hose to the bypass valve actuator or a stuck closed bypass valve will cause a rough idle and reduced fuel economy.
