Master Switch Assembly

With the Ignition Switch in RUN, battery voltage is applied to the Master Switch Assembly via CKT 141. The switch assembly is grounded via CKT 150. When any Master Switch Assembly UP switch (not associated with express down) is operated, battery voltage is applied to the Window Motor. The motor is grounded through the DN contact in the Master Switch Assembly, and it runs the motor to drive the window up.

When a Master Switch Assembly DN switch is pressed past the first detent, battery voltage is applied to the Window Motor in the opposite direction. The motor is grounded through the UP contact in the Master Switch Assembly, and it runs the motor to drive the window down.