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NO USB AUDIO SOUND OUTPUT

id160300000600

Outline

Possible cause

•  USB device malfunction

•  USB port/SD card slot hub malfunction

•  Remote tuner (RT) malfunction

•  Connectivity master unit (CMU) malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY ALL SYSTEM DTCs

•  Perform the DTC inspection.
(Refer to the [DTC INSPECTION] in the workshop manual)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

Go to the next step.

2

INSPECT USB DEVICE FOR MALFUNCTION

•  After obtaining the customer's consent, replace with a USB device that was not used when the malfunction occurred.

•  Select the USB audio mode by operating the commander switch or the center display.

•  Is sound from the USB audio output?

Yes

System is normal. (Explain to the customer that the USB device or internal data has a malfunction)

No

Go to the next step.

3

INSPECT USB PORT/SD CARD SLOT HUB FOR MALFUNCTION

•  Inspect the applicable part.
(Refer to the [USB PORT/SD CARD SLOT HUB INSPECTION] in the workshop manual)

•  Is the part normal?

Yes

Go to the next step.

No

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

(Refer to the [USB PORT/SD CARD SLOT HUB REMOVAL/INSTALLATION] in the workshop manual)

4

INSPECT REMOTE TUNER (RT) FOR MALFUNCTION

•  Clear the DTC recorded in the memory.
(Refer to the [CLEARING DTC] in the workshop manual)

•  Perform the DTC inspection for the connectivity master unit (CMU).
(Refer to the [DTC INSPECTION] in the workshop manual)

•  Is the same Pending DTC present?

Yes

Replace the remote tuner (RT) and perform the repair completion verification.

(Refer to the [REMOTE TUNER (RT) REMOVAL/INSTALLATION] in the workshop manual)

No

Go to repair completion verification.

Repair completion verification

VERIFY THAT VEHICLE IS REPAIRED

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

•  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.

(Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual)

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

•  If the malfunction is not resolved, replace the connectivity master unit (CMU).
(Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual)

Step	Inspection	Results	Action
1	VERIFY ALL SYSTEM DTCs • Perform the DTC inspection. (Refer to the [DTC INSPECTION] in the workshop manual) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
1		No	Go to the next step.
2	INSPECT USB DEVICE FOR MALFUNCTION • After obtaining the customer's consent, replace with a USB device that was not used when the malfunction occurred. • Select the USB audio mode by operating the commander switch or the center display. • Is sound from the USB audio output?	Yes	System is normal. (Explain to the customer that the USB device or internal data has a malfunction)
2		No	Go to the next step.
3	INSPECT USB PORT/SD CARD SLOT HUB FOR MALFUNCTION • Inspect the applicable part. (Refer to the [USB PORT/SD CARD SLOT HUB INSPECTION] in the workshop manual) • Is the part normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification. (Refer to the [USB PORT/SD CARD SLOT HUB REMOVAL/INSTALLATION] in the workshop manual)
4	INSPECT REMOTE TUNER (RT) FOR MALFUNCTION • Clear the DTC recorded in the memory. (Refer to the [CLEARING DTC] in the workshop manual) • Perform the DTC inspection for the connectivity master unit (CMU). (Refer to the [DTC INSPECTION] in the workshop manual) • Is the same Pending DTC present?	Yes	Replace the remote tuner (RT) and perform the repair completion verification. (Refer to the [REMOTE TUNER (RT) REMOVAL/INSTALLATION] in the workshop manual)
4		No	Go to repair completion verification.
Repair completion verification	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • 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. (Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction is not resolved, replace the connectivity master unit (CMU). (Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual)