Trunk / Liftgate: Description and Operation

CIRCUIT OPERATION
The Trunk Lid Pull-Down Motor is powered at all times through circuit 138 and fuse C1 and is grounded at all times through circuit 154 at G400. When the trunk lid is unlatched, the Trunk Lid Ajar Switch moves to the LID AJAR position. With the Striker Switches in position 1, voltage is applied to the Striker Motor through striker switch B. The Striker Motor now runs since it is grounded through striker switch C and the Trunk Lid Ajar Switch. The Striker Motor drives the striker up until the striker contacts the Striker Switches, moving the Striker Switches to position 2. This opens the Striker Motor ground path through striker switch C. Voltage is now applied to the Striker Motor through Striker Switch B in the opposite direction. The Striker Motor does not run because there is no ground path through Striker Switch A and Trunk Lid Latch Switch which is in the UNLATCHED position.

When the trunk lid latch is lowered to engage the striker, the Trunk Lid Latch Switch LATCHED contacts close and the Striker Motor runs since battery voltage is applied to the Striker Motor through striker switch B and ground is supplied through striker switch A and the Trunk Lid Latch Switch. The Striker Motor now drives the striker down, the trunk lid closes, and the Trunk Lid Ajar Switch moves to the LID CLOSED position. The Striker Motor runs until the striker contacts the Striker Switches, moving the Striker Switches to position 1. This opens the Striker Motor ground path through striker switch A.

Voltage is now applied to the Striker Motor through Striker Switch B in the opposite direction. The Striker Motor does not run because there is no ground path through Striker Switch C and the Trunk Lid Ajar Switch which is in the LID CLOSED position.