Previa Van LE 4WD L4-2438cc 2.4L DOHC SC MFI (1997)
(b) Apply battery voltage to terminals B1 and B2, and while repeatedly grounding S4-S3-S2-S1-S4 in sequence, and check that the valve moves
toward the open position.
If operation is not as specified, replace the supercharger bypass valve.
