System Description

System Description

Security Alarm System
The security alarm system is integrated with the multiplex integrated control system, and arms automatically after the doors, hood, and trunk are closed and locked. For the system to arm, the ignition switch must be off, the key must be removed, and the MICU must receive signals that the doors, hood, trunk are closed and locked. The alarm can be disarmed at any time by unlocking the driver's door with the key or pressing the UNLOCK button on the remote transmitter.

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 0.8 V - 5 V, including the key cylinder switches. The security indicator at the driver's door begins to flash immediately after the doors, trunk, and hood are closed and locked, and shorty 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 (0 V), or there is a short in the circuit (0 V), the security 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. There is no glass breakage or motion detector feature.

If anything is opened or improperly unlocked after the system is armed, the control unit receives a ground signal from that switch, the 0.8 V - 5.0 V reference drops to 0 V, and the system sounds the alarm. If the audio unit is disconnected, the input loses its ground, and the input voltage goes to 5.0 V or more, and the system sounds the alarm. The system sounds the alarm when any of following occur while the security system is armed:
- A door or the trunk is forced open
- A door is unlocked without using the key or the remote transmitter
- The hood is opened
- The audio unit is disconnected
- The remote panic is operated
- The ignition switch is turned ON (II)

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 with the key or by pressing any button on the remote transmitter.

Panic Mode
The panic mode sounds the alarm in order to attract attention. When the PANIC button on the remote transmitter is pressed and held for about 2 seconds, the alarm sounds and the exterior lights flash for about 20 seconds.

The panic mode can be cancelled at anytime by pressing any button on the remote transmitter or by turning the ignition switch ON (II). The panic mode will not function if the ignition switch is ON (II).

Keyless Entry System
The keyless entry system is integrated with the MICS. The multiplex integrated control unit (MICU) receives LOCK, UNLOCK and PANIC signals from the keyless receiver unit. The remote transmitters 1 and 2 (Identified on the back of the remote) are linked to the DPMS, the climate control settings, the custom memory settings (in the MID), and the illumination settings. Depending on which remote transmitter unlocks the vehicle, these settings are chosen.

Some functions of the security, keyless entry and power door locks can be customized using the MID keyless memory setting. They include:

- AUTO DOOR LOCK: Door locking can be turned off, or turned on when shifting from Park (A/T) or at a speed above 10 mph.
- AUTO DOOR UNLOCK: Door unlocking can be turned off, or turned on when shifting to Park (A/T) or turning the ignition switch OFF.
- WHENEVER UNLOCKING: Door unlocking can be set to unlock all doors or only the driver's door.
- KEYLESS DOOR LOCK ACKNOWLEDGEMENT: The beep can be turned on or off when pressing the LOCK button a second time on the remote transmitter.
- SECURITY RELOCK TIMER: Select the time (30, 60, or 90 sec.) that the doors relock if you unlock the doors with the remote transmitter, but do not open any of them.
- HEADLIGHT AUTO OFF TIMER: Select time (0, 15, 30, or 60 sec.) to turn the headlights off after removing the key from the ignition and closing the driver's door.
- INTERIOR LIGHT DIMMING TIMER: Select the dimming time (5, 15, or 30 sec.) of the interior lights after closing the door with the key removed from the ignition.

The remote transmitters can be linked and unlinked to the keyless memory settings by pressing the LOCK and UNLOCK buttons at the same time for about 1 second. The LED on the remote transmitter blinks once when linked, and twice when unlinked.

The keyless entry system allows you to lock and unlock the vehicle with the remote transmitter. When you press the LOCK button, all the doors lock(unless anyone of the doors is not fully closed or the key is in the ignition switch). When you press the UNLOCK button first time, only the driver's door unlocks, if keyless memory setting "WHENEVER UNLOCKING" is set to Driver's Door. The other doors unlock when you press the UNLOCK button a second time. All the doors unlock when you press the UNLOCK button first time if keyless memory setting "WHENEVER UNLOCKING" is set to All Doors.

NOTE: The doors will not lock with the remote transmitter if a door is not fully closed, or if the key is in the ignition switch.

If the UNLOCK button is pressed, released, then pressed and held, the windows and the moonroof begin to open. The windows and the moonroof stop if the button is released. See power windows for more information and troubleshooting.

When the interior light switch is in the center position, it will come on when the UNLOCK button is pressed. If a door is not opened, the light will go off in about 30, 60, or 120 seconds (depending on the keyless memory setting "SECURITY RELOCK TIMER"), and the doors will relock. If the doors are locked with the remote transmitter within 30 seconds, the light will go off immediately.

Power Door Lock System
The power door lock system locks and unlocks all four doors with the driver's or passenger's master door lock switch. The doors can be locked and unlocked using the key in the driver's door key cylinder switch. If the key is turned counterclockwise, all the doors lock. If the key is turned clockwise once, the driver's door unlocks, and when the key is released, then turned again, the other doors unlock.
The doors can also be locked by pushing down on the lock knob on the driver's door. Pulling up on the lock knob only unlocks the driver's door. The lock knobs on the other doors only lock and unlock that door.

If the key is in the ignition, and a door is open, the doors will not lock using the master door lock switches and the door multiplex control unit will automatically unlock the doors if you push down on the driver's door lock knob.