NO USB AUDIO SOUND OUTPUT [ENTERTAINMENT SYSTEM [WITHOUT CENTER DISPLAY]]

id0903l9060800

Description

NO USB AUDIO SOUND OUTPUT

Radio, CD, AUX audio, Bluetooth^® audio is output, but no USB sound

Possible Causes

•  USB media malfunction

•  Connector poor contact or terminal damage

•  Auxiliary jack/USB port malfunction

•  Open circuit in wiring harness between the following terminals:

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

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

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

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

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

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

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

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

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

•  Short to power supply in wiring harness between the following terminals:

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

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

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

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

•  Audio unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	DETERMINE IF MALFUNCTION CAUSE IS USB MEDIA • Switch the ignition off. • After obtaining the customer's consent, replace with a USB 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 USB media. • Is sound from the USB audio output?	Yes	System is normal. (Explain to the customer that the USB media or internal data has a malfunction)
1		No	Go to the next step.
2	AUXILIARY JACK/USB PORT CONNECTOR INSPECTION • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • 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?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 8.
3	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?	Yes	Go to the next step.
3		No	Repair or replace the connector, then go to Step 8.
4	AUXILIARY JACK/USB PORT INSPECTION • Inspect the auxiliary jack/USB port. (See AUXILIARY JACK/USB PORT INSPECTION.) • Is the auxiliary jack/USB port normal?	Yes	Go to the next step.
4		No	Replace the auxiliary jack/USB port, then go to Step 8. (See AUXILIARY JACK/USB PORT REMOVAL/INSTALLATION.)
5	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). ― Audio unit terminal 3C and auxiliary jack/USB port terminal UA ― Audio unit terminal 3D and auxiliary jack/USB port terminal UB ― Audio unit terminal 3B and auxiliary jack/USB port terminal UC ― Audio unit terminal 3A and auxiliary jack/USB port terminal UD • Is there continuity?	Yes	Go to the next step.
5		No	• Refer to the wiring diagram and verify if there is a common connector between the following terminals. ― Audio unit terminal 3C and auxiliary jack/USB port terminal UA ― Audio unit terminal 3D and auxiliary jack/USB port terminal UB ― Audio unit terminal 3B and auxiliary jack/USB port terminal UC ― Audio unit terminal 3A and auxiliary jack/USB port terminal UD 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 8.
6	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. ― Auxiliary jack/USB port terminal UA ― Auxiliary jack/USB port terminal UB ― Auxiliary jack/USB port terminal UC ― Auxiliary jack/USB port terminal UD • Is there continuity?	Yes	• Refer to the wiring diagram and verify if there is a common connector between the following terminals. ― Audio unit terminal 3C and auxiliary jack/USB port terminal UA ― Audio unit terminal 3D and auxiliary jack/USB port terminal UB ― Audio unit terminal 3B and auxiliary jack/USB port terminal UC ― Audio unit terminal 3A and auxiliary jack/USB port terminal UD 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.
6		No	Go to the next step.
7	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 cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Switch the ignition to ACC or ON (engine off or on). • Measure the voltage at the following terminals (vehicle wiring harness side). ― Auxiliary jack/USB port terminal UA ― Auxiliary jack/USB port terminal UB ― Auxiliary jack/USB port terminal UC ― Auxiliary jack/USB port terminal UD • Is the voltage B+?	Yes	• Refer to the wiring diagram and verify if there is a common connector between the following terminals. ― Audio unit terminal 3C and auxiliary jack/USB port terminal UA ― Audio unit terminal 3D and auxiliary jack/USB port terminal UB ― Audio unit terminal 3B and auxiliary jack/USB port terminal UC ― Audio unit terminal 3A and auxiliary jack/USB port terminal UD 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 is shorted to the power supply. • Go to the next step.
7		No	Replace the audio unit, then go to the next step. (See AUDIO UNIT REMOVAL/INSTALLATION.)
8	VERIFY IF MALFUNCTION CAUSE IS CORRECTED • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Connect all the connectors. • Reconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Insert the USB disc when the malfunction occurred. • Switch the ignition to ACC or ON (engine off or on). • Operate the audio unit and select the USB media. • Is sound from the USB audio output?	Yes	Troubleshooting completed. (explain the contents of the servicing to the customer)
8		No	Verify the malfunction symptom in the symptom troubleshooting chart and perform the other applicable malfunction diagnosis. (See SYMPTOM TROUBLESHOOTING [ENTERTAINMENT SYSTEM [WITHOUT CENTER DISPLAY]].)