Description

Audio unit internal malfunction, or iPod malfunction

Detection condition

When iPod is connected, audio unit read error is detected

Fail-safe function

Not applicable

Possible cause

• USB device/iPod malfunction

• Incompatible USB device (format) used

• Audio unit connector or terminal malfunction

• Auxiliary jack/USB port connector or terminal malfunction

• Open circuit in wiring harness between the following terminals:

• Audio unit terminal 3A and auxiliary jack/USB port terminal UD

• Audio unit terminal 3B and auxiliary jack/USB port terminal UC

• Audio unit terminal 3C and auxiliary jack/USB port terminal UA

• Audio unit terminal 3D and auxiliary jack/USB port terminal UB

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

• Audio unit terminal 3A and auxiliary jack/USB port terminal UD

• Audio unit terminal 3B and auxiliary jack/USB port terminal UC

• Audio unit terminal 3C and auxiliary jack/USB port terminal UA

• Audio unit terminal 3D and auxiliary jack/USB port terminal UB

• Auxiliary jack/USB port malfunction

• Audio unit malfunction

Step

Inspection

Action

1

INSPECT USB DEVICE/iPod

• Connect the USB device/iPod to another vehicle (model/unit).

• Is the USB device/iPod connection detected/unit plays back.

Yes

Go to the next step.

No

System is normal. (USB device/iPod malfunction or incompatible USB device.)

Go to Step 7.

2

INSPECT AUXILIARY JACK/USB PORT CONNECTOR CONDITION

• Disconnect the auxiliary jack/USB port connector.

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

• Is there any malfunctioning part?

Yes

Repair or replace the connector, then go to Step 7.

No

Go to the next step.

3

INSPECT AUXILIARY JACK/USB PORT

• Inspect the auxiliary jack/USB port.

  (See AUXILIARY JACK/USB PORT INSPECTION.)

• Is there any malfunctioning part?

Yes

Replace the auxiliary jack/USB port, then go to Step 7.

(See AUXILIARY JACK/USB PORT REMOVAL/INSTALLATION.)

No

Go to the next step.

4

INSPECT AUDIO UNIT CONNECTOR CONDITION

• Switch the ignition off (LOCK).

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Disconnect the audio unit connector.

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

• Is there any malfunctioning part?

Yes

Repair or replace the connector, then go to Step 7.

No

Go to the next step.

5

INSPECT WIRING HARNESS FOR OPEN CIRCUIT BETWEEN AUDIO UNIT AND AUXILIARY JACK/USB PORT

• Verify that the connectors for the audio unit and the auxiliary jack/USB port are disconnected.

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

• Audio unit terminal 3A and auxiliary jack/USB port terminal UD

• Audio unit terminal 3B and auxiliary jack/USB port terminal UC

• Audio unit terminal 3C and auxiliary jack/USB port terminal UA

• Audio unit terminal 3D and auxiliary jack/USB port terminal UB

• 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 (vehicle wiring harness side).

• Audio unit terminal 3A and auxiliary jack/USB port terminal UD

• Audio unit terminal 3B and auxiliary jack/USB port terminal UC

• Audio unit terminal 3C and auxiliary jack/USB port terminal UA

• Audio unit terminal 3D and auxiliary jack/USB port terminal UB

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

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

Go to Step 7.

6

INSPECT WIRING HARNESS FOR SHORT TO GROUND BETWEEN AUDIO UNIT AND AUXILIARY JACK/USB PORT

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

• Auxiliary jack/USB port terminal UD

• Auxiliary jack/USB port terminal UC

• Auxiliary jack/USB port terminal UA

• Auxiliary jack/USB port terminal UB

• Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between the following terminals (vehicle wiring harness side).

• Auxiliary jack/USB port terminal UD

• Auxiliary jack/USB port terminal UC

• Auxiliary jack/USB port terminal UA

• Auxiliary jack/USB port terminal UB

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

Go to Step 7.

No

Go to the next step.

7

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

• Reconnect all the disconnected connectors.

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Clear the audio unit DTCs.

  (See CLEARING DTC [AUDIO].)

• Perform the audio unit DTC inspection.

  (See DTC INSPECTION [AUDIO].)

• Is the same DTC displayed?

Yes

Return to Step 1 and inspect for other possible causes.

If the malfunction recurs, replace the audio unit, then go to the next step.

(See AUDIO UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

8

VERIFY IF OTHER DTCs DISPLAYED

• Are any other DTCs displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [AUDIO].)

No

DTC troubleshooting completed.