NO AUX AUDIO SOUND OUTPUT [ENTERTAINMENT SYSTEM [WITHOUT CENTER DISPLAY]]
id0903l9061400
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Description
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NO AUX AUDIO SOUND OUTPUT
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• Radio, USB audio, Bluetooth® audio is produced, but no AUX audio
• Noise interference occurs in AUX audio sound
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Possible Causes
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• Effects of non-genuine, after-market electrical components
• External device malfunction
• Connector poor contact or terminal damage
• Auxiliary jack/USB port malfunction
• Open circuit in wiring harness between the following terminals:
• Short to ground in wiring harness between the following terminals:
• Short to power supply in wiring harness between the following terminals:
• Audio unit malfunction
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY AFTER-MARKET ELECTRICAL COMPONENT INSTALLATION CONDITION
• Verify if a non-genuine, after-market electrical component is installed.
• Has a non-genuine, after-market electrical component been installed?
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Yes
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Go to the next step.
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No
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Go to Step 3.
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2
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VERIFY IF MALFUNCTION CAUSE IS AFTER-MARKET ELECTRICAL COMPONENT INSTALLATION
• Disconnect the non-genuine, after-market electrical component connectors.
• Verify if the malfunction symptom recurs as stated by the customer.
• Does the malfunction recur?
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Yes
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Go to the next step.
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No
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Explain to the customer that the malfunction occurred due to the after-market electrical component installation.
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3
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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).
• Operate the audio unit and select the AUX audio.
• Is sound from the AUX audio output?
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Yes
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System is normal. (Explain to the customer that the external device or internal data has a malfunction)
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No
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Go to the next step.
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4
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AUXILIARY JACK/USB PORT CONNECTOR INSPECTION
• Disconnect the negative battery terminal.
• Disconnect the connector of the auxiliary jack/USB port.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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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 connector, then go to Step 10.
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5
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INSPECT AUDIO UNIT CONNECTOR
• Disconnect the audio unit connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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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 connector, then go to Step 10.
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6
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AUXILIARY JACK/USB PORT INSPECTION
• Inspect the auxiliary jack/USB port.
• Is the auxiliary jack/USB port normal?
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Yes
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Go to the next step.
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No
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Replace the auxiliary jack/USB port, then go to Step 10.
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7
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VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN AUDIO UNIT AND AUXILIARY JACK/USB PORT
• Verify that the audio unit and the auxiliary jack/USB port connectors are disconnected.
• Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side).
• 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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Refer to the wiring diagram and verify if there is a common connector between the following terminals.
• Audio unit terminal 2L—Auxiliary jack/USB port terminal E
• Audio unit terminal 2K—Auxiliary jack/USB port terminal D
• Audio unit terminal 2J—Auxiliary jack/USB port terminal C
• Audio unit terminal 2I—Auxiliary jack/USB port terminal B
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.
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8
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VERIFY IF MALFUNCTION CAUSE IS SHORT CIRCUIT TO GROUND IN WIRING HARNESS BETWEEN AUDIO UNIT AND AUXILIARY JACK/USB PORT
• Verify that the audio unit and the auxiliary jack/USB port connectors are disconnected.
• Inspect for continuity between the following wiring harness terminals (vehicle wiring harness side) and body ground.
• Is there continuity?
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Yes
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Refer to the wiring diagram and verify if there is a common connector between the following terminals.
• Audio unit terminal 2L—Auxiliary jack/USB port terminal E
• Audio unit terminal 2K—Auxiliary jack/USB port terminal D
• Audio unit terminal 2J—Auxiliary jack/USB port terminal C
• Audio unit terminal 2I—Auxiliary jack/USB port terminal B
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.
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No
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Go to the next step.
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9
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VERIFY IF MALFUNCTION CAUSE IS SHORT CIRCUIT TO POWER SUPPLY IN WIRING HARNESS BETWEEN AUDIO UNIT AND AUXILIARY JACK/USB PORT
• Verify that the audio unit and the auxiliary jack/USB port connectors are disconnected.
• Reconnect the negative battery terminal.
• Switch the ignition to ACC or ON (engine off or on).
• Measure the voltage at the following terminals (vehicle wiring harness side).
• Is the voltage B+?
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Yes
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Refer to the wiring diagram and verify if there is a common connector between the following terminals.
• Audio unit terminal 2L—Auxiliary jack/USB port terminal E
• Audio unit terminal 2K—Auxiliary jack/USB port terminal D
• Audio unit terminal 2J—Auxiliary jack/USB port terminal C
• Audio unit terminal 2I—Auxiliary jack/USB port terminal B
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 the next step.
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No
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Replace the audio unit, then go to the next step.
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10
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VERIFY IF MALFUNCTION CAUSE IS CORRECTED
• Disconnect the negative battery terminal.
• Connect all the connectors.
• Reconnect the negative battery terminal.
• Insert the external device when the malfunction occurred.
• Switch the ignition to ACC or ON (engine off or on).
• Operate the audio unit and select the AUX audio.
• Is sound from the AUX audio output?
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Yes
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Troubleshooting completed. (explain the contents of the servicing to the customer)
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No
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Verify the malfunction symptom in the symptom troubleshooting chart and perform the other applicable malfunction diagnosis.
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