Circuit Operation
The audible warnings system is controlled by the multi-function alarm
module. The audible warnings system sounds a chime in order to bring attention
to the following conditions:
| • | The key is in the ignition cylinder with the door open |
| • | The seat belt is not fastened |
| • | The headlamps are on with the door open |
| • | The turn signal is on with continuous operation after 1.2 km
(3/4 mile) |
The multi-function alarm also controls the battery run down protection
feature.
Key-in-Ignition Chime
Voltage is applied at all times to connector C2 terminal D
of the multi-function alarm module through the INT LAMP fuse. When the key
is in the ignition and the left front door opens, connector C1 terminal H
and terminal E of the multi-function alarm module are grounded. This
sounds the chime.
Fasten Belts Chime
Voltage is applied through the ALARM fuse to connector C1 terminal M
of the multi-function alarm module when the ignition switch is in the following
positions:
When the left front seat belt is unbuckled, connector C1 terminal K
of the multi-function alarm is grounded through the seat belt switch. The
fasten belts chime sounds for 4-8 seconds.
Fasten Belts Indicator
The fasten belts indicator is controlled by the instrument panel cluster.
Refer to
Instrument Cluster System Check
.
Lamps-On Chime
The multi-function alarm module sounds the lamps-on chime under the
following conditions:
| • | Battery voltage at connector C1 terminal D indicates
that the park lamps or the head lamps are on. |
| • | Zero volts at connector C1 terminal M indicates
that the ignition switch is in one of the following positions: |
| • | Ground at connector C1 terminal H indicates that
the left hand door is open. |
Turn Signal On Chime
When a turn signal is operated, voltage is applied to connector C1
terminal C. The multi-function alarm module monitors the vehicle distance
at connector C1 terminal A. If the turn signal is still flashing
after the vehicle has travelled 1.2 km (3/4 mile), then the
turn signal chime sounds as the turn signal flashes.
Battery Run Down Protection
The battery run down protection feature has 3 independent features:
| • | Parasitic power control |
| • | Inadvertent power control |
| • | Courtesy lights control |
Parasitic Power Control
The parasitic power control output of the multi-function alarm module
supplies voltage to the radio. The output timer shuts off power to the radio
when one of the following conditions occurs:
| • | The vehicle travels for less than 25 km (15 miles)
since the battery power was applied to the multi-function alarm module, and
the vehicle is parked for 3 days following the last ignition cycle. |
| • | The vehicle travels for more than 25 km (15 miles)
since the battery power was applied to the multi-function alarm module, and
the vehicle is parked for 24 days following the last ignition cycle. |
Inadvertent Power Control
The inadvertent power control output of the multi-function alarm module
supplies voltage to the following lamps:
| • | The IP compartment lamp |
| • | The luggage compartment lamp |
Refer to Lighting Systems for diagnostic information.
Courtesy Lights Control
The courtesy lights control output of the multi-function alarm module
supplies ground to the courtesy lamps and the dome lamps. Refer to Lighting
Systems for diagnostic information.
Power Output Diagnostic Mode
The power diagnostic mode in the multi-function alarm module can be
used in order to run an inspection on the operation of the following outputs:
| • | The parasitic power control |
| • | The courtesy lights control |
| • | The inadvertent power control |
The power output diagnostic mode is activated after all of the following
actions are performed:
| • | The ignition switch is turned to RUN |
| | Perform the following actions before 15 seconds pass: |
| - | Open the right front door. |
| - | Cycle the headlamp switch from OFF to PARK 3 times. |
During normal operation, the multi-function alarm module flashes the
interior lamps until the ignition is turned off. If an internal short is found
in the multi-function alarm module, the module chimes as follows:
| • | One chime every 3 seconds. |
| | This indicates an inadvertent output failure |
| • | Two chimes every 3 seconds. |
| | This indicates a courtesy output failure. |
