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 50 A 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.

When ignition switch 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.

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

IGNITION KEY WARNING CHIME (WITHOUT INTELLIGENT KEY)
With the key inserted into the ignition key cylinder, and the ignition switch OFF or ACC, when driver's door is opened, the warning chime will sound.

Power is supplied
- through key switch terminal 1
- to BCM terminal 37.

Ground is supplied
- to BCM terminal 62
- through front door switch driver side terminal 1.

Front door switch driver side is case grounded.
BCM detects key inserted into the ignition key cylinder, and sends key warning signal to combination meter with CAN communication line.
When combination meter receives key warning signal, it sounds warning chime.

IGNITION KEY WARNING CHIME (WITH INTELLIGENT KEY)

When Mechanical Key Is Used
With the key inserted into the ignition key cylinder, and the ignition switch LOCK or ACC, when driver's door is opened, the warning chime will sound.
Power is supplied
- through key switch and ignition knob switch terminal 4
- to BCM terminal 37.

Ground is supplied
- to BCM terminal 62
- through front door switch driver side terminal 1.

Front door switch driver side is case grounded.
BCM detects key inserted into the ignition key cylinder, and sends key warning signal to combination meter with CAN communication line.
When combination meter receives key warning signal, it sounds warning chime.

When Intelligent Key Is Carried With The Driver
Intelligent Key unit detects ignition knob return is forgotten, and sends key warning signal to Intelligent Key buzzer.
When Intelligent Key buzzer receives key warning signal, it sounds warning chime.
Refer to "WARNING CHIME FUNCTION".

LIGHT WARNING CHIME
With the key removed from the ignition key cylinder, or with the intelligent knob is in LOCK (push switch OFF) [with Intelligent Key], the driver's door is opened, and the lighting switch in 1ST or 2ND position, the warning chime will sound. [Except when headlamp battery saver control operates (for 5 minutes after ignition switch is turned to OFF or ACC position) and headlamps do not illuminate.]
Signal is supplied
- from combination switch (lighting switch) terminals 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10
- to BCM terminals 2, 3, 4, 5, 6, 32, 33, 34, 35 and 36.

NOTE: BCM detected lighting switch in 1ST or 2ND position, refer to "Combination Switch Reading Function".

Ground is supplied
- from front door switch driver side terminal 1
- to BCM terminal 62.

BCM detects headlamps are illuminated, and sends light warning signal to combination meter with CAN communication line.
When combination meter receives light warning signal, it sounds warning chime.

SEAT BELT WARNING CHIME
With ignition switch turned ON and seat belt unfastened [seat belt buckle switch (driver side) ON], warning chime will sound for approximately 6 seconds.
Ground is supplied
- from seat belt buckle switch (driver side) terminal 1
- to combination meter terminal 47.

Seat belt buckle switch (driver side) terminal 2 is grounded through grounds B5 and B29.
BCM receives seat belt unfastened signal from combination meter over CAN communication line, and sends seat belt warning signal to combination meter with CAN communication line.
When combination meter receives seat belt warning signal, it sounds warning chime.

CAN Communication
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 "CAN Communication Unit" in "LAN SYSTEM".