Audible Warning Device: Description and Operation

Seat Belt Warning-Manual Belts

When the Ignition Switch is turned to START or RUN, power is applied through circuit 640 (R/Y) to the Warning Chime Module, which then supplies power through circuit 450 (DG/LG) to illuminate the Fasten Belts Indicator for six seconds, whether or not the driver's seat belt is fastened. If the driver's seat belt is NOT fastened during this time, the Seat Belt Switch remains closed and ground is supplied form the Seat Belt Switch through circuit 85 (BR/LB) to the Warning Chime Module, causing it to sound for six seconds.

Lap Belt Warning-Passive Restraint

When the Ignition Switch is turned to START or RUN, power is supplied through circuit 640 (R/Y) to the Warning Chime Module, which then supplies power through circuit 450 (DG/LG) to the Passive Restraint Module. Power is then supplied through circuit 871 (Y) to illuminate the Fasten Belts Indicator for six seconds, whether or not the driver's lap belt is fastened. If the driver's lap belt is NOT fastened during this time, the Seat Belt Switch remains closed, supplying ground through circuit 85 (BR/LB) to the Warning Chime Module, causing it to sound for six seconds.

Shoulder Belts Not Fastened Warning-Passive Restraint

When the Ignition Switch is turned to RUN and one or both of the passive restraint belts are not connected to their buckles, the Passive Restraint Module will supply power to the Warning Chime Module for six seconds through circuit 159 (R/PK). The Chime sounds as a reminder to connect the passive restraint belts to their buckles. If the belts remain unfastened, the Passive Restraint Module will supply power through circuit 87 (Y) to illuminate continuously the Fasten Belts Indicator until both passive restraint belts are buckled.

Shoulder Belts Stopped Warning-Passive Restraint

In the unlikely event that either passive restraint belt carrier should stop during its travel before reaching and locking in at the B-Pillar, the Passive Restraint Module will supply power through circuit 871 (Y) to illuminate the Fasten Belts Indicator. If the passive restraint belt carrier remains stopped for approximately 112 seconds after the Ignition Switch has been turned to RUN, the Passive Restraint Module will supply power through circuit 159 (R/PK) to the Warning Chime Module, causing it to sound. The lamp will remain illuminated and the chime will continue to sound until the condition is corrected.

Key-In-Ignition Warning

The warning chime sounds when the driver's door is open and the key is in the Ignition Switch. It continues to sound until the key is remove or the door is closed. When the key is in the ignition, the Key Warning Switch is closed and ground is supplied to the Warning Chime Module through circuit 158 (BK/PK). When the driver's door is open, the driver's door courtesy lamp switch is closed and power is applied to the Module through circuit 159 (R/PK).

Headlamps-On Warning

The warning chime sounds when the Main Light Switch is in PARK or HEAD and the driver's door is open. It continues to sound until the switch is move to OFF or the door is closed. On vehicles without Autolamps, when the Main Light Switch is in PARK or HEAD, power is applied through circuits 14 (BR) and 257 (W/R) to the Warning Chime Module. On vehicles equipped with Autolamps, the Module is grounded through circuit 158 (BK/PK). When the driver's door is open, the Left Door Courtesy Lamp Switch is closed and power is applied to the Module through circuit 159 (R/PK).

Instrument Cluster (Electronic) Beep Tone

On vehicles equipped with Electronic Instrument Cluster, whenever a Cluster button is pressed, the Cluster momentarily grounds circuit 183 (T/Y) to the Warning Chime Module, causing it to emit a momentary beep tone. Whenever selected visual warning messages are displayed on the cluster, the Electronic Instrument Cluster grounds circuit 183 (T/Y) to the Module for one second, causing it to emit a one second beep tone to attract attention to the cluster.

Shift Indicator Tone-3.8L SC Only

As a reminder to the driver that the transmission can be shifted to overdrive, the EEC Module grounds circuit 462 (P) to the Warning Chime Module, causing it emit a high frequency tone.