Control Unit

The control unit positions the shoulder belts according to inputs from the ignition switch, the door latch switches (located in the latch assemblies), and the front and rear position switches, located in the shoulder belt track assembly.

When the ignition switch is turned ON, the control unit will monitor the door switches, and the front and rear position switches to determine where the shoulder belt is located. If the belt is not in the proper position, the control unit will move it to the correct position. In a properly functioning system, the belts should be in the positions shown in the BELT POSITIONS TABLE below.

BELT POSITIONS (IGNITION SWITCH ON)

Ignition Key Position	Door Position Left	Door Position Right	Shoulder Belt Position Left	Shoulder Belt Position Right
ON	Closed	Closed	Rear	Rear
ON	Open	Closed	Forward	Rear
ON	Open	Open	Forward	Forward
ON	Closed	Open	Rear	Forward

When the ignition switch is turned OFF, the driver's side shoulder belt will travel forward and remain there, regardless of the driver's door position. The passenger's belt will remain in the rearward position if the passenger's door is not opened. If the passenger's door is opened, the shoulder belt will travel forward and remain there.

BELT POSITIONS (IGNITION SWITCH OFF)

Ignition Key Position	Door Position Left	Door Position Right	Shoulder Belt Position Left	Shoulder Belt Position Right
OFF	Closed	Closed	Forward	Rear
OFF	Open	Closed	Forward	Rear
OFF	Open	Open	Forward	Forward
OFF	Closed	Open	Forward	Forward