Audible Warning Device: Description and Operation

WARNING CHIME

System Description

FUNCTION
Power is supplied at all times
- through 50 A fusible link (letter f, located in the fuse and fusible link box)
- to BCM terminal 55, and
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to key switch and key lock solenoid terminal 3.

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

Ground is supplied
- to BCM terminal 52, and
- to combination switch terminal 12
- through body grounds M57, M61, and M79.

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

IGNITION KEY WARNING CHIME
With the key inserted in the ignition switch, the ignition switch in OFF position, and the driver's door open, the warning chime will sound.

Power is supplied
- through key switch and key lock solenoid terminal 4
- to BCM terminal 37.

Ground is supplied
- to BCM terminal 62
- through front door switch LH terminal 2.

Front door switch LH is case grounded.
BCM sends door open signal to unified meter and A/C amp. via CAN communication lines.
BCM detects key inserted into the ignition switch, and sends key warning signal to unified meter and A/C amp. via CAN communication lines. Unified meter and A/C amp. sends key warning signal to combination meter via communication line between unified meter and A/C amp. and combination meter.
When combination meter receives key warning signal, it sounds warning chime.

LIGHT WARNING CHIME
With the key removed from the ignition switch, the driver's door open, and the lighting switch (part of the combination switch) in 1st or 2nd position, the warning chime will sound. [This is the operation of the light warning chime, 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
- to BCM terminal 62
- through front door switch LH terminal 2.

Front door switch LH is case grounded.
BCM sends door open signal to unified meter and A/C amp. via CAN communication lines.
BCM detects headlamps are illuminated, and sends light warning signal to unified meter and A/C amp. via CAN communication lines. Unified meter and A/C amp. sends light warning signal to combination meter via communication line between unified meter and A/C amp. and combination meter.
When combination meter receives light warning signal, it sounds warning chime.

SEAT BELT WARNING CHIME
When the ignition switch is turned ON with the seat belt unfastened [seat belt buckle switch LH unfastened], warning chime will sound for approximately 6 seconds.

Ground is supplied
- to combination meter terminal 1
- through seat belt buckle switch LH terminal 1.

Seat belt buckle switch LH terminal 2 is grounded through body grounds B7 and B19.
Combination meter sends seat belt buckle switch LH unfastened signal to unified meter and A/C amp. via communication line between unified meter and A/C amp. and combination meter.
BCM receives seat belt buckle switch LH unfastened signal from unified meter and A/C amp. via CAN communication line, and sends seat belt warning signal to unified meter and A/C amp. via CAN communication line. Unified meter and A/C amp. sends seat belt warning signal to combination meter via communication line between unified meter and A/C amp. and combination meter.
When the combination meter receives the seat belt warning signal, it sounds the warning chime. The BCM controls the (6 second) duration of the seat belt warning chime.

CAN Communication System Description
Refer to "INFORMATION BUS".