Description

NO AUX AUDIO SOUND OUTPUT

Radio, CD audio, Bluetooth^® audio, Internet radio, and guidance audio is output, but not AUX audio

Possible Causes

• External device malfunction

• Connector poor contact or terminal damage

• Open circuit in wiring harness between the following terminals:

• Tuner and amp unit (TAU) terminal 1L and auxiliary jack/USB port/SD card slot hub terminal 1C

• TAU terminal 1I and auxiliary jack/USB port/SD card slot hub terminal 1E

• TAU terminal 1K and auxiliary jack/USB port/SD card slot hub terminal 1G

• TAU terminal 1J and auxiliary jack/USB port/SD card slot hub terminal 1H

• Short to ground in wiring harness between the following terminals:

• TAU terminal 1L and auxiliary jack/USB port/SD card slot hub terminal 1C

• TAU terminal 1I and auxiliary jack/USB port/SD card slot hub terminal 1E

• TAU terminal 1K and auxiliary jack/USB port/SD card slot hub terminal 1G

• TAU terminal 1J and auxiliary jack/USB port/SD card slot hub terminal 1H

• Short to power supply in wiring harness between the following terminals:

• TAU terminal 1L and auxiliary jack/USB port/SD card slot hub terminal 1C

• TAU terminal 1I and auxiliary jack/USB port/SD card slot hub terminal 1E

• TAU terminal 1K and auxiliary jack/USB port/SD card slot hub terminal 1G

• TAU terminal 1J and auxiliary jack/USB port/SD card slot hub terminal 1H

• Auxiliary jack/USB port/SD card slot hub malfunction

• TAU malfunction

• Connectivity master unit (CMU) malfunction

System Wiring Diagram

Step

Inspection

Action

1

DETERMINE IF MALFUNCTION CAUSE IS EXTERNAL DEVICE

• Switch the ignition off.

• After obtaining the customer’s consent, replace with an external media that was not used when the malfunction occurred.

• Switch the ignition to ACC or ON (engine off or on).

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

• Is sound from the AUX audio output?

Yes

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

No

Go to the next step.

2

INSPECT AUXILIARY JACK/USB PORT/SD CARD SLOT HUB CONNECTOR

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Disconnect the auxiliary jack/USB port/SD card slot hub connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 10.

3

INSPECT TAU CONNECTOR

• Disconnect the TAU connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 10.

4

INSPECT CMU CONNECTOR

• Disconnect the CMU connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 10.

5

VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN TAU AND AUXILIARY JACK/USB PORT/SD CARD SLOT HUB

• Verify that the TAU and the auxiliary jack/USB port/SD card slot hub connector are disconnected.

• Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side).

• TAU terminal 1L and auxiliary jack/USB port/SD card slot hub terminal 1C

• TAU terminal 1I and auxiliary jack/USB port/SD card slot hub terminal 1E

• TAU terminal 1K and auxiliary jack/USB port/SD card slot hub terminal 1G

• TAU terminal 1J and auxiliary jack/USB port/SD card slot hub terminal 1H

• Is there continuity?

Yes

Go to the next step.

No

• Refer to the wiring diagram and verify if there is a common connector between the following terminals.

• TAU terminal 1L and auxiliary jack/USB port/SD card slot hub terminal 1C

• TAU terminal 1I and auxiliary jack/USB port/SD card slot hub terminal 1E

• TAU terminal 1K and auxiliary jack/USB port/SD card slot hub terminal 1G

• TAU terminal 1J and auxiliary jack/USB port/SD card slot hub terminal 1H

If there is a common connector:

• Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.

• Repair or replace the malfunctioning location.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

• Go to Step 10.

6

VERIFY IF MALFUNCTION CAUSE IS SHORT CIRCUIT TO GROUND IN WIRING HARNESS BETWEEN TAU AND AUXILIARY JACK/USB PORT/SD CARD SLOT HUB

• Verify that the TAU and the auxiliary jack/USB port/SD card slot hub connector are disconnected.

• Inspect for continuity between the following wiring harness terminals (vehicle wiring harness side) and body ground.

• Auxiliary jack/USB port/SD card slot hub terminal 1C

• Auxiliary jack/USB port/SD card slot hub terminal 1E

• Auxiliary jack/USB port/SD card slot hub terminal 1G

• Auxiliary jack/USB port/SD card slot hub terminal 1H

• Is there continuity?

Yes

• Refer to the wiring diagram and verify if there is a common connector between the following terminals.

• TAU terminal 1L and auxiliary jack/USB port/SD card slot hub terminal 1C

• TAU terminal 1I and auxiliary jack/USB port/SD card slot hub terminal 1E

• TAU terminal 1K and auxiliary jack/USB port/SD card slot hub terminal 1G

• TAU terminal 1J and auxiliary jack/USB port/SD card slot hub terminal 1H

If there is a common connector:

• Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.

• Repair or replace the malfunctioning location.

If there is no common connector:

• Repair or replace the wiring harness which is shorted to ground.

• Go to Step 10.

No

Go to the next step.

7

VERIFY IF MALFUNCTION CAUSE IS SHORT CIRCUIT TO POWER SUPPLY IN WIRING HARNESS BETWEEN TAU AND AUXILIARY JACK/USB PORT/SD CARD SLOT HUB

• Verify that the TAU and the auxiliary jack/USB port/SD card slot hub connector are disconnected.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Switch the ignition to ACC or ON (engine off or on).

• Measure the voltage at the following terminals (vehicle wiring harness side).

• Auxiliary jack/USB port/SD card slot hub terminal 1C

• Auxiliary jack/USB port/SD card slot hub terminal 1E

• Auxiliary jack/USB port/SD card slot hub terminal 1G

• Auxiliary jack/USB port/SD card slot hub terminal 1H

• Is the voltage B+?

Yes

• Refer to the wiring diagram and verify if there is a common connector between the following terminals.

• TAU terminal 1L and auxiliary jack/USB port/SD card slot hub terminal 1C

• TAU terminal 1I and auxiliary jack/USB port/SD card slot hub terminal 1E

• TAU terminal 1K and auxiliary jack/USB port/SD card slot hub terminal 1G

• TAU terminal 1J and auxiliary jack/USB port/SD card slot hub terminal 1H

If there is a common connector:

• Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location.

• Repair or replace the malfunctioning location.

If there is no common connector:

• Repair or replace the wiring harness which is shorted to the power supply.

• Go to Step 10.

No

Go to the next step.

8

VERIFY IF MALFUNCTION CAUSE IS AUXILIARY JACK/USB PORT/SD CARD SLOT HUB

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Replace the auxiliary jack/USB port/SD card slot hub.

  (See AUXILIARY JACK/USB PORT/SD CARD SLOT HUB REMOVAL/INSTALLATION.)

• Connect all the connectors.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Connect the external device when the malfunction occurred.

• Switch the ignition to ACC or ON (engine off or on).

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

• Is sound from the AUX audio output?

Yes

Troubleshooting completed. (Explain the contents of the servicing to the customer.)

No

Go to the next step.

9

VERIFY IF MALFUNCTION CAUSE IS TAU

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Replace the TAU.

  (See TUNER AND AMP UNIT (TAU) REMOVAL/INSTALLATION.)

• Connect all the connectors.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Connect the external device when the malfunction occurred.

• Switch the ignition to ACC or ON (engine off or on).

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

• Is sound from the AUX audio output?

Yes

Troubleshooting completed. (Explain the contents of the servicing to the customer.)

No

Replace the CMU, then go to the next step.

(See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)

10

VERIFY IF MALFUNCTION CAUSE IS CORRECTED

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Connect all the connectors.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Connect the external device when the malfunction occurred.

• Switch the ignition to ACC or ON (engine off or on).

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

• Is sound from the AUX audio output?

Yes

Troubleshooting completed. (Explain the contents of the servicing to the customer.)

No

Verify the malfunction symptom in the symptom troubleshooting chart and perform the other applicable malfunction diagnosis.

(See SYMPTOM TROUBLESHOOTING [ENTERTAINMENT SYSTEM [WITH CENTER DISPLAY]].)