C-Pillar Ajar Switch

The C-pillar ajar switch is monitored by the PSD module to determine when the sliding door sheet metal is in proximity to the body sheet metal. The C-pillar ajar switch can be activated either before or after the latch is secured in secondary position, depending on tolerances. During a PSD close operation, the PSD module monitors the C-pillar ajar switch for a state change (indicating secondary latch position) to turn off obstacle detection. The C-pillar ajar switch input is:

• an open circuit with the PSD closed.
• grounded with the PSD open.
• open circuit just before or at secondary latch position (PSD partially latched).