The power door lock system includes the following components:
| • | The door lock/unlock actuators |
| • | A driver door unlock relay |
| • | The driver/passenger door lock/unlock switches |
| • | The body control module (BCM) |
| • | The endgate lock switch |
The door/endgate mechanisms may be controlled by the following switches:
| • | The driver/passenger door lock/unlock switches |
| • | The endgate lock switch |
The following locking functions are included on the vehicle:
| • | All the doors unlock -- All the doors will unlock, including
the endgate, when any power door unlock switch is detected. The passenger
doors unlock directly by pressing the unlock switches. The driver door unlocks
by the BCM using a drivers door unlock relay. |
| • | All the doors lock -- All the doors will lock, including
the end/lift gate, when any power door lock switch is activated. All the lock
actuators will activate directly from the power door lock switch (external
to the BCM). |
| • | The endgate lock switch -- All the doors will lock or unlock
from the endgate lock switch. |
| • | The lockout prevention -- This function will prevent the
doors from automatically locking if the keys have been left in the ignition
and the power door lock switch is operated. |
The motor is protected by a built-in electronic circuit breaker (ECB).
If the motor is overloaded or voltage is applied for an excessive amount of
time, the ECB internal resistance increases, essentially creating an open
circuit. The resistance returns to normal only after voltage is
removed from the circuit, thereby restoring circuit continuity.
