Achieva L4-144 2.4L DOHC VIN T SFI (1996)
Audible Warning Device: Description and Operation
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 all
of the above components where one of these two conditions occurs:
^
Vehicle travels for less than 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, see Lighting and Horns for Interior Lights. See:
Lighting and Horns
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 Lighting and Horns for Interior Lights. See: Lighting and Horns
Fasten Belts Chime
With the Ignition Switch in "RUN," "BULB TEST" or START," voltage is applied through the ALARM Fuse to Connector C1 term "M" of the
Multi-Function Alarm Module. With the LH front seat belt unbuckled, Connector C1 term "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 Cluster microprocessor. For diagnosis of this indicator, refer to Fasten Belts Indicator
Diagnosis.
General Information
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.
^
Headlights 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 term "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 term "H" and term "E" of the Multi-Function Alarm Module are grounded. This sounds the chime.
Light-on Chime
The Multi-Function Alarm Module sounds the Lights-on chime when the following three conditions are met:
1. Battery voltage at Connector C1 terminal "D" indicates that the Park or Headlamps are on.
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.
Power Output Diagnostic Mode
There is a Power Output Diagnostic Module in the Multi-Function Alarm Module that can be 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:
^
Turn Interior Lamps on using Panel Dimmer Switch
^
Set Park Brake.
^
Close all doors.
^
Turn on Radio.
^
Turn Ignition Switch to "RUN" and, before 15 seconds pass, perform these steps.
-
Open the RH front door.
-
Cycle the Headlamp Switch from "PARK" to "OFF" 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 event
an internal short is found in the Multi-Function Alarm Module, the module will chime as follows:
