Previa Van DX 4WD L4-2438cc 2.4L DOHC SC MFI (1997)
2. INSPECT SWITCH ILLUMINATION
a. Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 3.
b. Check that the illumination light lights up.
c. When the window lock switch pushed in, check the the passenger's illumination light goes off.
If operation is not as specified, replace the master switch.