Grand AM L4-144 2.4L DOHC VIN T SFI (1997)
Audible Warning Device Control Module: Description and Operation
The Audible Warnings System is controlled by the Multi-Function Alarm Module and sounds a chime to bring attention to several conditions. These
conditions are:
^
Key is in the Ignition Cylinder (with door open).
^
Seat Belt is not fastened.
^
Headlamps are on (with door open).
^
Turn signal is on (with continuous operation after 3/4 mile).
The Multi-Function Alarm Module 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 LH front door is open, Connector C1 terminal "H" and terminal "E" of the Multi-Function Alarm Module are grounded. This
sounds the chime.
Fasten Belts Chime
With the Ignition Switch in "RUN," "BULB TEST" or "START," voltage is applied through the ALARM Fuse to Connector C1 terminal "M" of
the Multi-Function Alarm Module. With the LH front seat belt unbuckled, Connector C1 terminal "K" of the Multi-Function Alarm Module is
grounded through the Seat Belt Switch. The fasten belts chime sounds for 4 to 8 seconds.
Fasten Belts Indicator
The Fasten Belts Indicator is controlled by the Instrument Panel Cluster. Refer to Diagnosis.
Lamps-ON Chime
The Multi-Function Alarm Module sounds the Lamps-on chime when the following three conditions are met:
1. Battery voltage at Connector C1 terminal "D" indicates that the Park or Headlamps
2. Zero volts at Connector C1 terminal "M" indicates that the Ignition Switch is in "OFF," "ACCY," or "LOCK."
3. Ground at Connector C1 terminal "H" indicates that the LH 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 begins to monitor vehicle
distance at Connector C1 terminal "A." If the turn signal is still flashing after the vehicle has travelled 3/4 mile, the turn signal chime will sound as
the turn signal flashes.
Battery Run Down Protection
The Battery Run Down Protection Feature is made up of three independent features: Parasitic Power Control, Inadvertent Power Control, and
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 will shut off power to the
Radio when one of these two conditions occurs:
^
Vehicle travels for less than 25 kph (15 miles) since battery power is applied to the Multi-Function Alarm Module and is parked for three days
following the last ignition cycle.
^
Vehicle travels for more than 15 miles since battery power is applied to the Multi-Function alarm module and 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 these lamps: Courtesy, Header, rear Quarter,
Vanity Mirror, Reading, I/P Compartment and Luggage Compartment. For more information, refer to Interior Lights.
Courtesy Lights Control
The Courtesy Lights Control output of the Multi-Function Alarm Module supplies ground to the Courtesy and Dome lamps. For more information,
refer to Interior Lights.
Power Output Diagnostic Mode
There is a Power Output Diagnostic Mode in the Multi-Function Alarm Module that can he used to run a quick check on the operation of the
Parasitic Power Control, the Courtesy Lights Control and the Inadvertent Power Control outputs. it is activated after all of the following actions
have been performed:
^
Set Park Brake
^
Close all doors
^
Turn Ignition Switch to "RUN" and, before 15 seconds pass, perform these steps.
^
Open the RH front door
^
Cycle the Headlamp Switch from "OFF" to "PARK" three times.
During normal operations (no trouble found), the Multi-Function Alarm Module will flash the interior lamps until the ignition is turned off. In the
