The power door lock system includes the following components:
| • | The door lock actuators |
| • | A driver door unlock relay |
| • | The door lock and side window switches |
| • | The body control module (BCM) |
| • | The endgate lock cylinder switch / liftgate lock cylinder
switch (utility) |
| • | The keyless entry, if equipped |
The door lock and liftgate mechanisms may be controlled by the following
switches:
| • | The door lock and side window switches |
| • | The endgate lock cylinder switch / liftgate lock cylinder switch
(utility) |
| • | The keyless entry, if equipped |
The following locking functions are included on the vehicle:
| • | All the doors unlock -- All the doors will unlock, including
the endgate/liftgate, when any power door unlock switch is detected. The passenger
doors lock directly by pressing the lock switches. The driver door unlocks
by the BCM using a driver door unlock relay. |
| • | All the doors lock -- All the doors will lock, including
the endgate/liftgate, 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 end/lift gate lock switch -- All the doors will lock
or unlock from the end/lift gate lock switch. |
| • | The lockout prevention -- This function will unlock the drivers
door automatically 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.
