Security Alarm System

The security alarm system is integrated with the multiplex integrated control system, and arms automatically after the doors, hood, and trunk lid are closed and locked. For the system to arm, the ignition switch must be in the LOCK (0) position, the key must be removed from the ignition switch, and the MICU must receive inputs that the doors, hood, and trunk lid are closed and locked. The alarm can be disarmed at any time by unlocking the driver's door with the key, pressing the UNLOCK button on the remote, or grabbing the outer door handle with the keyless remote in range.

When everything is closed and locked, the only inputs that are grounded, and have 0 V, are the driver's door lock knob switch (LOCK position), and the audio unit. In other words, all of the other switches are open, and have about 10-12 V, including the key cylinder switches. The security indicator in the gauge control module begins to flash immediately after the doors, hood, and trunk lid are closed and locked, and shortly later, the security system arms and the security indicator flashes on for a shorter amount of time than before. If the security indicator does not flash, the system is not arming. If the vehicle is completely closed and locked, a beep sounds and parking lights flash to confirm the security alarm system is armed if the LOCK button is pressed a second time within 5 seconds, and the keyless lock acknowledgment is turned on.

If one of the switches is misadjusted or shorted internally, or there is a short in to ground in its circuit (0 V), the security system will not arm. As long as the control unit continues to receive a ground input (0 V) except for the driver's door lock/unlock knob switch input, it senses that the vehicle is not closed and locked, and the system will not arm. A switch that is slightly misadjusted can cause the alarm to sound for no apparent reason. In this case, a significant change in outside air temperature, the vibration of a passing vehicle, or something bumping into the vehicle could cause the alarm to sound.

NOTE: There is no glass breakage or motion detection feature.

If anything is opened or improperly unlocked after the system is armed, the control unit receives a ground signal from that switch, and the 10 to 12 V reference drops to 0 V. If the audio unit is disconnected, the input loses its ground, and the input voltage goes from 0 V to 10 to 12 V.

The system sounds the alarm when any of these occur:

A door or the trunk lid is forced open
A door is unlocked without using the built-in key or the remote
The hood is opened
The audio unit is disconnected
The remote panic is operated

When the system sounds the alarm, the horns sound and the exterior lights flash for 2 minutes. The alarm can be stopped at any time by unlocking the driver's door by pressing any button on the remote.

NOTE: The security system can be customized to suit client needs using the multi-information display (MID. For more information about keyless/security system options, refer to the Owner's Manual.