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Auxiliary Audio Input Malfunction

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    • Diagnostic Procedure Instructions provide an overview of each diagnostic category.

Circuit/System Description

Auxiliary Audio Input Jack

The 3.5 mm (1/8 in.) auxiliary audio input jack is located in the console. All circuits from the auxiliary jack are connected directly to the radio. When a portable audio playback device is connected to the auxiliary jack an internal switch opens. The radio detects the device and switches to AUX as the audio source. Audio signals from the device are sent to the radio from the auxiliary input jack via the left, right, and common audio signal circuits.

USB Port

The vehicle may be equipped with a USB port in the console. This port allows USB connectivity to the infotainment system from portable media players or a USB storage device (memory stick/ flash drive). When a device is connected to the USB port, the system detects the device and switches to USB as the audio source. Once connected, the device can be controlled from the radio controls.

The USB port is connected to the radio via a standard USB cable. Mini type USB connectors are used to connect the cable at the USB port and the radio. Standard USB male to female connections are typically used for connecting USB cables together where an in-line connection is required. An in-line cable connection is typically found between the console and I/P harness.

Not all portable media player devices are compatible. Memory stick/ flash drive capability is limited to MP3 and WMA file types only. Video transfer from any device is not supported. Refer to the owner's manual for information on USB devices, control, and operation.

Diagnostic Aids

Auxiliary Audio Input Jack

    • When a device is first connected to the 3.5 mm (1/8 in.) input jack the infotainment system automatically switches to that device. If an auxiliary device has already been connected, press the AUX or CD/AUX button to select the device.
    • If the system detects the device, but the audio is not heard or is not clear, attempt to connect the device using a different cable; cables can deteriorate over time or become damaged.
    • Playback of an audio device that is connected to the 3.5 mm jack can only be controlled using the controls on the device.
    • The volume control on the device may need to be adjusted to ensure sufficient playback volume through the infotainment system.

USB

    • When a device is first connected to the USB port, the infotainment system automatically switches to that device. If an auxiliary device has already been connected, press the AUX or CD/AUX button to select the device.
    • A low battery condition in a portable media player may not allow the device to connect to the system, or can create communication issues with the device. Verify the device battery state of charge and re-charge or replace as needed.
    • Connect the device directly to the USB port if possible. Only use a cable if it is required to connect the device. The use of extension cables can cause communication issues.
    • If a cable is required for connection, attempt to connect the device using a different cable; cables can deteriorate over time or become damaged.
    • Attempt audio playback from multiple USB devices when diagnosing USB concerns. Device compatibility can vary based on vehicle equipment. If the infotainment system is capable of operating any USB type device, the cause of the concern is not with the vehicle system. The inoperative device(s) may be incompatible or contain no recognised media types.
    • If a 'Device Not Supported' or similar type error message is displayed, this indicates the system has connected to the device but cannot communicate with it properly. This does not indicate an issue with the vehicle system. The device may be incompatible, may require a 'reset', or may require an update to its software/firmware.
    • If a 'No Supported Data Found' or similar type error message is displayed, this indicates the system has connected to the device and is communicating, but cannot find any compatible files/data. This does not indicate an issue with the vehicle system. Verify the device contains compatible media/ file types.
    • Poor connections or damaged USB cables can cause intermittent or no operation of USB devices. Inspect connectors, terminals, and cables for damage and replace components as necessary. Ensure all USB inline connections and connections at components are fully seated and connector position retainers/locks are secure.

Reference Information

Schematic Reference

Radio/Navigation System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Radio/Audio System Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-50334-50 USB Cable and Adapter Kit

Circuit/System Verification

Auxiliary Audio Input Jack

  1. Verify no DTCs are present.
    2. ⇒If any DTCs are present, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
  2. Vehicle in Service Mode, radio ON, connect a portable audio playback device to the auxiliary audio input jack. Verify the infotainment system switches to AUX as the audio source.
    3. ⇒If the infotainment system does not switch to AUX as the audio source, refer to Circuit/System Testing.
  3. Operate the device to begin audio playback, adjusting the volume on the device if necessary. Verify the audio from the device is heard through the vehicle infotainment system.
    4. ⇒If audio is not heard from the device, attempt to playback audio from another device. If audio cannot be heard from any device connected to the auxiliary audio input jack, refer to Circuit/System Testing.

USB Port

  1. Verify no DTCs are present.
    2. ⇒If any DTCs are present, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
  2. Inspect the USB port for damage.
    3. ⇒If damage is noted, replace the USB port.
  3. Vehicle in Service Mode, radio ON, connect a device to the USB port. Verify the infotainment system switches to USB as the audio source.
    4. ⇒If the infotainment system does not switch to USB as the audio source, refer to Circuit/System Testing.
  4. Operate the radio controls to play audio from the device. Verify the audio from the device is heard through the vehicle infotainment system.
    5. ⇒If audio is not heard from the device, attempt to playback audio from another device. If audio cannot be heard from any device connected to the USB port, or the audio heard is not clear, refer to Circuit/System Testing.

Circuit/System Testing

Auxiliary Audio Input Jack

  1. Vehicle OFF, disconnect the X1 harness connector at the X83 auxiliary audio input.
  2. Vehicle in Service Mode, radio ON, test for 2.5-3.5 V between the auxiliary detection terminal 5 and ground.
    3. ⇒If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the A11 radio.
    ⇒If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the A11 radio.
  3. Vehicle OFF, disconnect the X1 harness connector at the A11 radio. Test for infinite resistance between the circuits listed below and ground:
    4. • auxiliary audio common circuit terminal 23
    • left auxiliary audio circuit terminal 24
    • right auxiliary audio circuit terminal 10
    ⇒If not the specified value, test the circuit for a short to ground.
  4. Test for less than 5 Ω between the A11 radio X1 terminal 24 and the X83 auxiliary audio input X1 terminal 1.
    5. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  5. Test for less than 5 Ω between the A11 radio X1 terminal 10 and the X83 auxiliary audio input X1 terminal 2.
    6. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  6. Test for less than 5 Ω between the A11 radio X1 terminal 23 and the X83 auxiliary audio input X1 terminal 3.
    7. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  7. Reconnect the X1 harness connector at the A11 radio.
  8. Vehicle in Service Mode, test for less than 1 V between the circuits listed below and ground:
    9. • auxiliary audio common circuit X83 auxiliary audio input X1 terminal 3
    • left auxiliary audio circuit X83 auxiliary audio input X1 terminal 1
    • right auxiliary audio circuit X83 auxiliary audio input X1 terminal 2
    ⇒If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the A11 radio.
  9. If all circuits test normal, replace the X83 auxiliary audio input and reconnect all harness connectors. Connect and operate the portable audio playback device. If audio cannot be heard from the device, replace the A11 radio.

USB Port

  1. Vehicle OFF, disconnect the USB cable connection at the A11 radio.

    2. Note: USB cables and adapters for the following tests are found in the EL-50334-50 USB Cable and Adapter Kit .

  2. Connect the EL-50334-1 Type A male to Mini A male USB Cable to the A11 radio.
  3. Connect the EL-50334-3 Type A female to Type A female adapter to the EL-50334-1 Cable.
  4. Vehicle in Service Mode, radio ON, connect a USB device to the EL-50334-3 adapter. Verify the infotainment system switches to USB as the audio source.
    5. ⇒If the infotainment system does not switch to USB as the audio source, replace the A11 radio.
  5. Vehicle OFF, reconnect the vehicle USB cable to the A11 radio.
  6. Disconnect the X316 I/P to floor console harness USB connector.

    7. Note: The EL-50334-3 Type A female to Type A female adapter may be required for the following test.

  7. Vehicle in Service Mode, radio ON, connect a USB device to the I/P side of the X316 connector. Verify the infotainment system switches to USB as the audio source.
    8. ⇒If the infotainment system does not switch to USB as the audio source, replace the I/P USB cable assembly.
  8. Vehicle OFF, reconnect the X316 harness connector.
  9. Disconnect the USB cable at the X83 auxiliary audio input.
  10. Connect the EL-50334-4 Type A female to Mini B female adapter to the USB cable.
  11. Vehicle in Service Mode, radio ON, connect a USB device to the EL-50334-4 adapter. Verify the infotainment system switches to USB as the audio source.
    12. ⇒If the infotainment system does not switch to USB as the audio source, replace the console USB cable assembly.
  12. If all circuits test normal, replace the X83 auxiliary audio input.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Audio Disc Player, USB, Auxiliary In, and Memory Card Receptacle Replacement
    • Control Module References for radio replacement, programming and setup
   


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