NO AUX AUDIO SOUND OUTPUT [ENTERTAINMENT SYSTEM [WITH CENTER DISPLAY]]
id0903l8061400
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Description
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NO AUX AUDIO SOUND OUTPUT
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Radio, CD audio, Bluetooth® audio, Internet radio, and guidance audio is output, but not AUX audio
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Possible Causes
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• External device malfunction
• Connector poor contact or terminal damage
• 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:
• Auxiliary jack/USB port/SD card slot hub malfunction
• TAU malfunction
• Connectivity master unit (CMU) malfunction
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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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).
• Select the AUX audio mode by operating the commander switch or the center display.
• 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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2
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INSPECT AUXILIARY JACK/USB PORT/SD CARD SLOT HUB CONNECTOR
• Disconnect the negative battery cable.
• 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?
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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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3
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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?
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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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4
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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?
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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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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).
• 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.
• Go to Step 10.
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6
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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.
• 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.
• Go to Step 10.
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No
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Go to the next step.
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7
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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.
• 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.
• Go to Step 10.
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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 MALFUNCTION CAUSE IS AUXILIARY JACK/USB PORT/SD CARD SLOT HUB
• Disconnect the negative battery cable.
• Replace the auxiliary jack/USB port/SD card slot hub.
• Connect all the connectors.
• Reconnect the negative battery cable.
• 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?
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Yes
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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 TAU
• Disconnect the negative battery cable.
• Replace the TAU.
• Connect all the connectors.
• Reconnect the negative battery cable.
• 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?
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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 CMU, 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 cable.
• Connect all the connectors.
• Reconnect the negative battery cable.
• 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?
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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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