Locks, Latches and Entry Systems - Module Controlled

PRINCIPLES OF OPERATION

Power Door Locks
The vehicle security module (VSM) controls the door locks, remote keyless entry (RKE) system, and the memory locking feature. The normal path of the actuators is to ground through the VSM. The door lock control switch locks and unlocks all doors by grounding the appropriate circuit to the VSM. The VSM then supplies power to the appropriate common actuator circuit to lock or unlock all the doors.

The sliding door memory lock feature locks the sliding door in the event that a lock command was issued by the operator while the sliding door was open. Since the door lock actuators are located in the sliding door, power is supplied to the actuators through the contact plate. When the sliding door is opened, the circuit is also opened. If a lock command is issued through the RKE transmitter or door lock control switches and the sliding door is opened, the memory lock feature stores the command and issues the lock signal to the door lock actuators once the sliding door is closed.

Remote Keyless Entry (RKE)
The RKE transmitter sends a frequency that is received by the VSM internal antenna. Depending on the frequency received, the VSM locks all the doors or unlocks the driver door. If the unlock frequency is received again within 3 seconds of the first unlock, the VSM unlocks all the doors.

If the frequency received is for the PANIC button, the VSM cycles ground to the horn relay and voltage to the parking lamps. The parking lamps and the horn continue to cycle until the PANIC button is pressed again or the ignition switch is turned to the ON position. The operating range of the RKE transmitter may be affected by aftermarket systems, dealer installed options, high power devices, or TV/radio transmission towers.