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1
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INSPECT USB DEVICE/iPod
• Connect the USB device/iPod to a same-model vehicle (model/unit).
• Is the USB device/iPod connection detected/unit plays back.
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Yes
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Go to the next step.
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No
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System is normal. (USB device/iPod malfunction or incompatible USB device.)
Go to Step 7.
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2
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INSPECT AUDIO UNIT CONNECTOR CONDITION
• Switch the ignition off (LOCK).
• Disconnect the negative battery cable.
• 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?
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Yes
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Repair or replace the connector, then go to Step 7.
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No
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Go to the next step.
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3
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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?
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Yes
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Repair or replace the connector, then go to Step 7.
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No
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Go to the next step.
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4
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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 not disconnected.
• Inspect for continuity between the following terminals (vehicle wiring harness).
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― Audio unit terminal 4A and auxiliary jack/USB port terminal UD
― Audio unit terminal 4B and auxiliary jack/USB port terminal UC
― Audio unit terminal 4C and auxiliary jack/USB port terminal UA
― Audio unit terminal 4D and auxiliary jack/USB port terminal UB
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness, then go to Step 7.
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5
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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.
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― 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?
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Yes
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Repair or replace the wiring harness, then go to Step 7.
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No
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Go to the next step.
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6
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INSPECT AUXILIARY JACK/USB PORT
• Inspect the auxiliary jack/USB port.
• Is there any malfunctioning part?
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Yes
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Replace the auxiliary jack/USB port, then go to Step 7.
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No
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Go to the next step.
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7
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Reconnect all the disconnected connectors.
• Connect the negative battery cable.
• Clear the audio unit DTCs.
• Perform the audio unit DTC inspection.
• Is the same DTC displayed?
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Yes
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Return to Step 1 and inspect for other possible causes.
If the malfunction recurs, replace the audio unit, then go to the next step.
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No
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Go to the next step.
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8
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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