Alarm Module: Description and Operation
System DescriptionSecurity Alarm System
The security alarm system is armed automatically after the doors, hood, and trunk lid are closed and locked. The security indicator on the driver's door panel flashes after the system is armed.
The system is set off when any of these things occur:
- A door is forced open
- A door is unlocked without using the key or the transmitter
- The trunk lid is opened without using the transmitter
- The hood is opened
- Radio or navigation display are disconnected
When the system is set off, the alarm (horn) sounds and the exterior lights (headlights, side marker lights, parking lights, and taillights) flash for about 2 minutes or until the system is disarmed by unlocking either door with the key or the transmitter.
For the system to arm, the ignition switch must be off and the key removed. Then, the keyless/security control unit must receive signals that the doors, hood, and trunk lid are closed and locked. When everything is closed and locked, none of the control unit inputs are grounded.
When everything is closed and locked, control unit input have about 10 V reference, except the radio and navigation display which should be 0 V.
The door switches, hood switch, trunk lid switch, door lock knob switches, and door lock cylinder switches are all open. 10 seconds after the doors are locked with the key or the lock knob, or immediately after locking the doors with the remote transmitter, the system arms.
If anything is opened or improperly unlocked after the system is armed, the control unit input voltage drops from that switch, and the system is set off. If the radio or navigation display are disconnected the control unit input goes to 10 V, and the system is set off.
If one of the switches is misadjusted or There is a short in the system, the system will not arm. As long as the control unit continues to get a ground signal from the switch, the system will not arm because it thinks the vehicle is not closed and locked. If the security alarm system will not arm, see multiplex mode and input tests
An alarm that sounds for no apparent reason may have been set off by a switch that is on the threshold of misadjustment. In this case, it may only take a significant change in outside temperature, the vibration of a passing truck, or someone bumping into the vehicle to make the alarm sound.
If the security alarm sounds for 2 minutes and reset automatically, There has been a security input violation. If the security alarm sounds for 30 seconds, and resets automatically, the panic mode as been activated.
Panic Mode
The panic mode allows the security system to be set off by the remote transmitter to attract attention. When you push and hold the PANIC button for about 2 seconds, the alarm will sound and the exterior lights will flash for about 30 seconds.
To immediately cancel the panic mode, press any button on the remote transmitter, or turn the ignition switch ON (II). The panic mode will not function if the key is in the ON (II) position.
Keyless Entry System
The security alarm system is integrated with the keyless entry system. The keyless entry system allows you to lock and unlock the vehicle with the remote transmitter. When you push the LOCK button, all doors lock. When you push the UNLOCK button once, only the driver's door unlocks. The remaining doors unlock when you push the button a second time.
The ceiling lights, if its switch is in the center position, will come on when you press the UNLOCK button. If you do not open a door, the light will go off in about 30 seconds, the doors will automatically relock, and the security system will rearm. If you relock the doors with the remote transmitter within 30 seconds, the light will go off immediately.
You cannot lock or unlock the doors with the remote transmitter if a door is not fully closed, or if the key is in the ignition switch. If the trunk or hood are not closed, the doors will lock and unlock, but the security system will not be armed until the trunk lid and hood are closed.
To open the trunk lid, push the Trunk Release button and hold it for about 2 seconds. The trunk lid will not open if the key is in the ignition switch.
The system will signal you when the doors lock and unlock by flashing the parking lights, side marker lights, and taillights: once when they lock, and twice when they unlock. If the light do not Flash, make sure the doors, the hood, and the trunk lid are closed and locked. Check that the security indicator blinks, if the security alarm system does not arm, see multiplex mode and input tests.