Power Door Locks

CIRCUIT OPERATION
The power door lock system is controlled by the Body Control Module (BCM). The door lock switches, located in the front doors, are supplied power on the M1 circuit. This circuit is the Ignition-Off Draw (IOD) circuit. It is protected by a 10 Amp fuse located in cavity 13 of the junction block.

Both switches have a Light Emitting Diode (LED) located internal to the switch for night illumination. Power for the LED's is supplied on circuit G5. The G5 circuit is protected by a 5 Amp fuse located in cavity 14 of the junction block. Power for the fuse is supplied on circuit A21. The A21 circuit connects to the ignition switch and is HOT in the RUN position only.

The door lock switches use resistors internal to the switch. There are different resistors used for the LOCK and UNLOCK functions. Both switches have the same amount of resistance for the LOCK and UNLOCK functions.