DTC U2300:56 [APPROACHING VEHICLE AUDIBLE SYSTEM DEVICE]

System malfunction location	Configuration data unmatched with body control module (BCM)
Detection condition	• Configuration data of the approaching vehicle audible system device and body control module (BCM) are not matched.
Fail-safe	• Approaching vehicle alert sound is generated at maximum volume
Possible cause	Note • To correctly write the configuration data sent from the body control module (BCM) to the approaching vehicle audible system device, 30 s or more have to be elapsed since the main power is switched ON (READY off or on). • DTCs are stored in the body control module (BCM). ― Body control module (BCM) configuration not implemented ― Body control module (BCM) internal memory malfunction • Body control module (BCM) configuration data error • Approaching vehicle audible system device malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

System malfunction location

Configuration data unmatched with body control module (BCM)

Detection condition

• Configuration data of the approaching vehicle audible system device and body control module (BCM) are not matched.

Fail-safe

• Approaching vehicle alert sound is generated at maximum volume

Possible cause

Note

• To correctly write the configuration data sent from the body control module (BCM) to the approaching vehicle audible system device, 30 s or more have to be elapsed since the main power is switched ON (READY off or on).

• DTCs are stored in the body control module (BCM).

― Body control module (BCM) configuration not implemented

― Body control module (BCM) internal memory malfunction

• Body control module (BCM) configuration data error

• Approaching vehicle audible system device malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

Step	Inspection	Results	Action
1	VERIFY BODY CONTROL MODULE (BCM) DTCs • Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) • Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)
No	Go to the next step.
2	RESET CONFIGURATION DATA FOR BODY CONTROL MODULE (BCM) • Using the M-MDS, perform the body control module (BCM) configuration. (See CONFIGURATION.) • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Switch the main power ON (READY off or on) and wait for 30 s or more. • Perform the DTC inspection for the approaching vehicle audible system device. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	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, replace the approaching vehicle audible system device 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 IF OTHER DTC IS DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

Step

Inspection

Results

Action

VERIFY BODY CONTROL MODULE (BCM) DTCs

• Perform the DTC inspection for the body control module (BCM).

(See DTC INSPECTION.)

• Is a DTC displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)

Go to the next step.