CHIME/BUZZER
TABLE OF CONTENTS
page page
CHIME/BUZZER
DESCRIPTION ..........................1
OPERATION ............................1
WARNING .............................1
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - CHIME
SYSTEM .............................1
DIAGNOSIS AND TESTING - DOME LAMP
ON CHIME............................2
DIAGNOSIS AND TESTING - ENGINE
TEMPERATURE CRITICAL CHIME..........2
DIAGNOSIS AND TESTING - EXTERIOR
LAMPS ON CHIME .....................2
DIAGNOSIS AND TESTING - KEY-IN
IGNITION CHIME .......................2
DIAGNOSIS AND TESTING - LOW OIL
PRESSURE CHIME .....................3
DIAGNOSIS AND TESTING - SEAT BELT
CHIME...............................3
DIAGNOSIS AND TESTING - SEAT BELT
LAMP ...............................3
DIAGNOSIS AND TESTING - TIRE
PRESSURE MONITOR ..................3
DIAGNOSIS AND TESTING - TURN SIGNAL
ON CHIME............................3
DIAGNOSIS AND TESTING - WARNING
LAMP ANNOUNCEMENT CHIME ...........4
CHIME/BUZZER
DESCRIPTION
The chime/buzzer system provides the driver with
warning chimes for:
• Seat Belt
• Exterior Lamps ON
• Key-In Ignition
• Engine Temperature Critical
• Turn Signals ON
• Dome Lamp ON
• Low Oil Pressure
• High Speed Warning
• Warning Lamp Announcement
• Key-In Accessory
• Low/High Tire Pressure
• Service Tire Pressure Monitor (TPM)
HIGH SPEED WARNING - EXPORT
The chime will sound, acting as a warning to the
driver that the vehicle speed has exceeded 120 ± 3
kph (75 ± 2 mph).
OPERATION
The Chime/Buzzer Warning System is diagnosed
using a DRB lllt scan tool. Refer to the proper Body
Diagnostic Procedures Manual.
HIGH SPEED WARNING - EXPORT
When the vehicle speed sensor sees 120±3kph
(75 ± 2 mph), it sends a PCI data bus message to the
Body Control Module (BCM). The BCM then turns on
the chime to let the driver know that the vehicle has
reached a speed greater than 120±3kph(75±2
mph). This audible message will continue until the
vehicle is slowed below the predetermined speed.
WARNING
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - CHIME SYSTEM
NO TONE WHEN IGNITION SWITCH IS TURNED ON
AND DRIVER’S SEAT BELT IS NOT BUCKLED.
(1) Using a DRB lllt scan tool, actuate chime
(BCM actuates).
(2) Using a voltmeter, check for voltage:
RS CHIME/BUZZER 8B-1
To Next Page