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Circuit/System Description

For an overview of the component/system, refer to Power Door Locks Description and Operation 

Circuit Description
B+ - K9 Body Control Module Supplied from a fuse.
Signal The control module input circuit has an internal resistance connected to 12 V.
Control - Driver Door Unlock The output circuit is switched from ground to 12 V to activate the component.
Control - All Doors Lock The output circuit is switched from ground to 12 V to activate the component.
Control - Passenger Door Unlock The output circuit is switched from ground to 12 V to activate the component.
Ground - S13 Door Lock Switch Chassis Ground
Ground - K9 Body Control Module Chassis Ground
Component Description
A23 Door Latch Assembly The door locks are actuated by a bidirectional DC motor that locks/unlocks the door so that it can not be opened from outside the vehicle (but still from inside).
K9 Body Control Module The module controls various vehicle functions like lighting, central door locking, power windows, etc.
S13 Door Lock Switch
  • The switch has a normally open contact.
  • When the switch is activated, the signal circuit to the control module is grounded.
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