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1
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DETERMINE IF MALFUNCTION CAUSE IS USB DEVICE
• Switch the ignition off.
• After obtaining the customer's consent, replace with a USB device that was not used when the malfunction occurred.
• Switch the ignition to ACC or ON (engine off or on).
• Select the USB audio mode by operating the commander switch or the center display.
• Is sound from the USB audio output?
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Yes
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System is normal. (Explain to the customer that the USB 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
• Switch the ignition off.
• Disconnect the negative battery terminal. (Refer to the [NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION] in the workshop manual.)
• 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 8.
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3
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INSPECT CONNECTIVITY MASTER UNIT (CMU) CONNECTOR
• Disconnect the connectivity master unit (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 8.
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4
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VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND AUXILIARY JACK/USB PORT/SD CARD SLOT HUB
• Verify that the connectivity master unit (CMU) and the auxiliary jack/USB port/SD card slot hub connector are disconnected.
• Inspect the wiring harness for continuity between connectivity master unit (CMU) terminal 4A (wiring harness side) and auxiliary jack/USB port/SD card slot hub terminal 2A (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 connectivity master unit (CMU) terminal 4A and auxiliary jack/USB port/SD card slot hub terminal 2A.
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.
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5
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VERIFY IF MALFUNCTION CAUSE IS SHORT CIRCUIT TO GROUND IN WIRING HARNESS BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND AUXILIARY JACK/USB PORT/SD CARD SLOT HUB
• Verify that the connectivity master unit (CMU) 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.
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― Auxiliary jack/USB port/SD card slot hub terminal 2B
― Auxiliary jack/USB port/SD card slot hub terminal 2D
• 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.
• Connectivity master unit (CMU) terminal 4B—Auxiliary jack/USB port/SD card slot hub terminal 2B
• Connectivity master unit (CMU) terminal 4D—Auxiliary jack/USB port/SD card slot hub terminal 2D
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 8.
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No
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Go to the next step.
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6
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VERIFY IF MALFUNCTION CAUSE IS SHORT CIRCUIT TO POWER SUPPLY IN WIRING HARNESS BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND AUXILIARY JACK/USB PORT/SD CARD SLOT HUB
• Verify that the connectivity master unit (CMU) and the auxiliary jack/USB port/SD card slot hub connector are disconnected.
• Reconnect the negative battery terminal. (Refer to the [NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION] in the workshop manual.)
• Switch the ignition to ACC or ON (engine off or on).
• Measure the voltage at the following terminals (vehicle wiring harness side).
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― Auxiliary jack/USB port/SD card slot hub terminal 2A
― Auxiliary jack/USB port/SD card slot hub terminal 2B
― Auxiliary jack/USB port/SD card slot hub terminal 2D
• 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.
• Connectivity master unit (CMU) terminal 4A—Auxiliary jack/USB port/SD card slot hub terminal 2A
• Connectivity master unit (CMU) terminal 4B—Auxiliary jack/USB port/SD card slot hub terminal 2B
• Connectivity master unit (CMU) terminal 4D—Auxiliary jack/USB port/SD card slot hub terminal 2D
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 8.
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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 AUXILIARY JACK/USB PORT/SD CARD SLOT HUB
• Switch the ignition off.
• Disconnect the negative battery terminal. (Refer to the [NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION] in the workshop manual.)
• Replace the auxiliary jack/USB port/SD card slot hub. (Refer to the [AUXILIARY JACK/USB PORT/SD CARD SLOT HUB REMOVAL/INSTALLATION] in the workshop manual.)
• Connect all the connectors.
• Reconnect the negative battery terminal. (Refer to the [NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION] in the workshop manual.)
• Insert the USB disc when the malfunction occurred.
• Switch the ignition to ACC or ON (engine off or on).
• Select the USB audio mode by operating the commander switch or the center display.
• Is sound from the USB 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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Replace the connectivity master unit (CMU), then go to the next step.
(Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual.)
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8
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VERIFY IF MALFUNCTION CAUSE IS CORRECTED
• Switch the ignition off.
• Disconnect the negative battery terminal. (Refer to the [NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION] in the workshop manual.)
• Connect all the connectors.
• Reconnect the negative battery terminal. (Refer to the [NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION] in the workshop manual.)
• Insert the USB disc when the malfunction occurred.
• Switch the ignition to ACC or ON (engine off or on).
• Select the USB audio mode by operating the commander switch or the center display.
• Is sound from the USB 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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