APPROACHING VEHICLE ALERT SOUND DOES NOT SOUND, VOLUME IS LOW, VOLUME IS HIGH, OR MAKES AN ABNORMAL NOISE [APPROACHING VEHICLE AUDIBLE SYSTEM]

id0903y0170100

Outline

Description

•  Approaching vehicle alert sound does not sound, volume is low, volume is high, or makes an abnormal noise

Possible cause

•  Foreign matter is adhering to approaching vehicle audible system device

•  Approaching vehicle audible system device malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY COMMUNICATION CONDITION BETWEEN APPROACHING VEHICLE AUDIBLE SYSTEM DEVICE AND M-MDS

•  Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].)

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)

•  Is there communication between the approaching vehicle audible system and M-MDS?

Yes

Go to the next step.

No

Repair the malfunctioning location according to the applicable DTC troubleshooting.

2

VERIFY MALFUNCTION SYMPTOM AGAIN

•  Drive the vehicle under the following conditions.

―  Windows open

―  Shift position: D position

―  Low vehicle speed

•  Is the approaching vehicle alert sound normal?

Yes

Complete the symptom troubleshooting. (Explain contents of repair to customer)

No

Go to the next step.

3

VERIFY CONDITION AROUND APPROACHING VEHICLE AUDIBLE SYSTEM DEVICE

•  Visually verify the applicable part.
(See APPROACHING VEHICLE AUDIBLE SYSTEM (AVAS) DEVICE REMOVAL/INSTALLATION.)

•  Are there any foreign matter is adhering to approaching vehicle audible system device?

Yes

Repair or replace the malfunctioning location and perform the repair completion verification.

(See APPROACHING VEHICLE AUDIBLE SYSTEM (AVAS) DEVICE REMOVAL/INSTALLATION.)

No

Go to the next step.

Repair completion verification

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Drive the vehicle under the following conditions.

―  Windows open

―  Shift position: D position

―  Low vehicle speed

•  Has the malfunction symptom been eliminated?

Yes

Complete the symptom troubleshooting. (Explain contents of repair to customer)

No

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].)

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction is not resolved, replace the approaching vehicle audible system device.
(See APPROACHING VEHICLE AUDIBLE SYSTEM (AVAS) DEVICE REMOVAL/INSTALLATION.)

Description	• Approaching vehicle alert sound does not sound, volume is low, volume is high, or makes an abnormal noise
Possible cause	• Foreign matter is adhering to approaching vehicle audible system device • Approaching vehicle audible system device malfunction

Step	Inspection	Results	Action
1	VERIFY COMMUNICATION CONDITION BETWEEN APPROACHING VEHICLE AUDIBLE SYSTEM DEVICE AND M-MDS • Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) • Is there communication between the approaching vehicle audible system and M-MDS?	Yes	Go to the next step.
1		No	Repair the malfunctioning location according to the applicable DTC troubleshooting.
2	VERIFY MALFUNCTION SYMPTOM AGAIN • Drive the vehicle under the following conditions. ― Windows open ― Shift position: D position ― Low vehicle speed • Is the approaching vehicle alert sound normal?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
2		No	Go to the next step.
3	VERIFY CONDITION AROUND APPROACHING VEHICLE AUDIBLE SYSTEM DEVICE • Visually verify the applicable part. (See APPROACHING VEHICLE AUDIBLE SYSTEM (AVAS) DEVICE REMOVAL/INSTALLATION.) • Are there any foreign matter is adhering to approaching vehicle audible system device?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification. (See APPROACHING VEHICLE AUDIBLE SYSTEM (AVAS) DEVICE REMOVAL/INSTALLATION.)
3		No	Go to the next step.
Repair completion verification	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Drive the vehicle under the following conditions. ― Windows open ― Shift position: D position ― Low vehicle speed • Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction is not resolved, replace the approaching vehicle audible system device. (See APPROACHING VEHICLE AUDIBLE SYSTEM (AVAS) DEVICE REMOVAL/INSTALLATION.)