Audible Warning Device: Description and Operation

WARNING CHIME

System Description
- The warning chime is controlled by the BCM.
- The warning chime is located in the combination meter.
- When combination meter receives buzzer signal from BCM with CAN communication line, the warning chime will sound.

FUNCTION
Power is supplied at all times
- through 50A fusible link (letter F, located in the fuse and fusible link block)
- to BCM terminal 55,
- through 10 A fuse [No. 18, located in the fuse block (J/B)]
- to BCM terminal 42,
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to key switch terminal 2 (without Intelligent Key),
- through 15 A fuse (No. 33, located in the fuse and fusible link block)
- to key switch and ignition knob switch terminals 1 and 3 (with Intelligent Key),
- through 10 A fuse [No. 19, located in the fuse block (J/B)]
- to combination meter terminal 21.

With ignition switch in the ON or START position, power is supplied
- through 10 A fuse [No. 1, located in the fuse block (J/B)]
- to BCM terminal 38,
- through 10 A fuse [No. 14, located in the fuse block (J/B)]
- to combination meter terminals 22 and 23.

Ground is supplied
- to BCM terminal 52
- through grounds M30 and M66,
- to combination meter terminals 1, 24 and 25
- through grounds M30 and M66.

IGNITION KEY WARNING CHIME (WITHOUT INTELLIGENT KEY)
With the key inserted into the key switch, and the ignition switch in OFF or ACC position, when driver's door is opened, the ignition key warning chime will sound.
- BCM detects key inserted into the key switch, ignition switch in OFF or ACC position, and front door switch (driver side) ON. And then, transmits buzzer output signal (ignition key warning chime) to combination meter with CAN communication.




- When combination meter receives buzzer output signal (ignition key warning chime), it sounds the buzzer.

IGNITION KEY WARNING CHIME (WITH INTELLIGENT KEY)

When Mechanical Key Is Used
With the key inserted into the key switch, and the ignition switch in LOCK or ACC position, when driver's door is opened, the ignition key warning chime will sound.
- BCM detects key inserted into the key switch, ignition switch in LOCK or ACC position, and front door switch (driver side) ON. And then, transmits buzzer output signal (ignition key warning chime) to combination meter with CAN communication.




- When combination meter receives buzzer output signal (ignition key warning chime), it sounds the buzzer.

When Intelligent Key Is Carried With The Driver
Refer to "WARNING CHIME FUNCTION".

LIGHT WARNING CHIME
With ignition switch in OFF or ACC position, driver's door is opened, and lighting switch in 1ST or 2ND position, the light warning chime will sound.

NOTE: BCM detects lighting switch in the 1st or 2nd position. Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION". Description and Operation

- BCM detects ignition switch in OFF or ACC position, front door switch (driver side) ON, and lighting switch in 1ST or 2ND position. And then, transmits buzzer output signal (light warning chime) to combination meter with CAN communication.




- When combination meter receives buzzer output signal (light warning chime), it sounds the buzzer.

SEAT BELT WARNING CHIME
With ignition switch turned ON and driver's seat belt unfastened, seat belt warning chime will sound for approximately 6 seconds.
- Combination meter reads a ON/OFF signal from seat belt buckle switch (driver side), and transmits seat belt buckle switch signal to BCM with CAN communication.
- BCM detects ignition switch turned ON and seat belt buckle switch (driver side) ON. And then, transmits buzzer output signal (seat belt warning chime) to combination meter with CAN communication.




- When combination meter receives buzzer output signal (seat belt warning chime), it sounds the buzzer.

NOTE: When ignition key warning chime, light warning chime, and seat belt warning chime should be performed at the same time, the priorities for each chime are the following:
1. Seat belt warning chime
2. Light warning chime
3. Ignition key warning chime

CAN COMMUNICATION

System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Unit
Refer to DI-61," CAN Communication Unit", in "LAN SYSTEM".