Audible Warning Device: Description and Operation

The audio alarm system brings to the driver's attention one or more of several conditions:
1. Lamps are on, ignition switch is set to LOCK, OFF or ACCY, and driver's door is open.
2. Key is in ignition switch, ignition switch is set to LOCK, OFF or ACCY, and driver's door is open.
3. Seat belt is unbuckled and ignition switch is in RUN, BULB TEST or START.
4. A turn signal is left on and vehicle has traveled over 1.2 km (3/4 mile).
5. Park brake is engaged and vehicle has traveled approximately 12 m (40 feet).

Module Power
Voltage is applied at all times on CKTS 640 and 1540 to Body Control Module (MALL) connector C1 terminal H and G respectively to power the module. With the ignition switch in RUN, BULB TEST or START, voltage is applied on CKT 39 to module connector C2 terminal C13.

Lamps On Chime
If the LH front door is open and the Body Control Module (MALL) does not sense voltage at the lamps off input (terminal D5) and there is no voltage at the ignition on input (terminal C13), the fast-pulsed lamps on chime is sounded.

Key In Ignition Chime
The key in ignition chime is sounded with the key in ignition switch and the driver's door open. When the ignition key warning switch and the LH front door lock switch are closed, the Body Control Module (MALL) senses ground at the key in ignition and sounds the medium-pulsed chime.

Fasten Belts Chime
With ignition switch in RUN, BULB TEST or START voltage is applied through IGN 1 Fuse to module connector C2 terminal C13 to the Body Control Module (MALL). With the driver's seat belt unbuckled, module connector C2 terminal D1 is grounded through the seat belt switch, and the FASTEN BELTS indicator lights for 4 to 8 seconds.

The fasten belts chime sounds for 4 to 8 seconds if driver's seat belt is unbuckled and ignition switch is turned to RUN, BULB TEST or START. If driver's seat belt is buckled when the ignition switch is turned to RUN, BULB TEST or START no chime sounds.

Turn Signal On Chime
When a turn signal is operated, the Body Control Module (MALL) begins to monitor vehicle distance. If the turn signal is still flashing after the vehicle has traveled 1.2 km (3/4 mile), the turn signal on chime sounds.

Park Brake Chime
Refer to Brake Lamp (Warning Indicator) for park brake chime operation. Brake Warning Indicator