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Auxiliary Audio Input Malfunction — Without SD Card Reader

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. The auxiliary input jack circuits may be connected directly to the radio, or to the multimedia player interface module (if equipped). When a portable audio playback device is connected to the auxiliary jack, an internal switch opens the detection signal circuit and the radio will switch to AUX as the audio source.

When not equipped with the multimedia player interface module, all circuits from the auxiliary jack are connected directly to the radio. When a 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.

When equipped with the multimedia player interface module, all circuits from the auxiliary jack are connected directly to the multimedia player interface module. When a device is connected to the auxiliary jack an internal switch opens. The multimedia player interface module detects the device and sends a serial data request to radio to switch to AUX as the audio source. Audio signals from the device are sent to the multimedia player interface module from the auxiliary input jack via the left, right, and common audio signal circuits. The multimedia player interface module then outputs these signals to the radio.

USB Port

The vehicle may be equipped with a USB port in the console. When equipped with the console USB port, the vehicle will also be equipped with a multimedia player interface module. 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 multimedia player interface module via a standard USB cable. A Mini type USB connector is used to connect the cable at the USB port and at the multimedia player interface module. 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.

Multimedia Player Interface Module (if equipped)

The multimedia player interface module is a device that is capable of receiving inputs from analogue or digital audio playback devices. Inputs can be received via the auxiliary input jack or USB. The multimedia player interface module and the radio communicate via serial data. Messages are used for the radio to control the input source, and for the multimedia player interface module to send detection information to the radio when devices are connected. The multimedia player interface module is used to provide capability for these inputs in systems where the radio does not provide native support.

The multimedia player interface module receives the inputs from the device, and transfers the audio signals to the radio for playback. All multimedia player interface module inputs are transferred to the radio as analogue audio signals via left, right, and common audio circuits.

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. Ignition ON, radio ON, connect a portable audio playback device to the auxiliary audio input jack. Verify the infotainment system to switches 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. Ignition ON, 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 without Multimedia Player Interface Module

  1. Ignition OFF, disconnect the harness connector at the X83 auxiliary audio input.
  2. Ignition ON, 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. Ignition OFF, disconnect the X1 wiring harness plug at the 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 signal 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 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 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 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. Ignition ON, test for less than 1 V between the circuits listed below and ground:
    9. • Auxiliary Audio Common Circuit X83 Auxiliary Audio Input Terminal 3
    • Left Auxiliary Audio Circuit X83 Auxiliary Audio Input Terminal 1
    • Right Auxiliary Audio Circuit X83 Auxiliary Audio Input 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.

Auxiliary Audio Input Jack with Multimedia Player Interface Module

  1. Ignition OFF, disconnect the X1 harness connector at the X83 auxiliary audio input.
  2. Ignition ON, 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 T11 multimedia player interface module.
    ⇒If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the T11 multimedia player interface module.
  3. Ignition OFF, disconnect the X1 harness connector at the T11 multimedia player interface module. Test for infinite resistance between the circuits listed below and ground:
    4. • Auxiliary Audio Common Circuit Terminal 3
    • Left Auxiliary Audio Circuit Terminal 12
    • Right Auxiliary Audio Circuit Terminal 13
    ⇒If not the specified value, test the signal circuit for a short to ground.
  4. Test for less than 5 Ω between the T11 multimedia player interface module X1 terminal 12 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 T11 multimedia player interface module X1 terminal 13 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 T11 multimedia player interface module X1 terminal 3 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. Ignition OFF, disconnect the X1 harness connector at the A11 radio. Test for infinite resistance between the circuits listed below and ground:
    8. • 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 signal circuit for a short to ground.
  8. Test for less than 5 Ω between the A11 radio X1 terminal 24 and the T11 multimedia player interface module X1 terminal 14.
    9. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  9. Test for less than 5 Ω between the A11 radio X1 terminal 10 and the T11 multimedia player interface module X1 terminal 15.
    10. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  10. Test for less than 5 Ω between the A11 radio X1 terminal 23 and the T11 multimedia player interface module X1 terminal 4.
    11. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  11. Reconnect the X1 harness connector at the A11 radio.
  12. Ignition ON, test for less than 1 V between the circuits listed below and ground:
    13. • Auxiliary Audio Common Circuit T11 Multimedia Player Interface Module X1 Terminal 4
    • Left Auxiliary Audio Circuit T11 Multimedia Player Interface Module X1 Terminal 14
    • Right Auxiliary Audio Circuit T11 Multimedia Player Interface Module X1 Terminal 15
    ⇒If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the A11 radio.
  13. 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 T11 multimedia player interface module. If audio is still not heard from the device, replace the A11 radio.

USB Port

  1. Ignition OFF, disconnect the USB cable connection at the T11 multimedia player interface module.

    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-50334-2 Type A female to Mini B male USB Cable to the T11 multimedia player interface module.
  3. Ignition ON, radio ON, connect a USB device to the EL-50334-2 cable . 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, replace the T11 multimedia player interface module.
  4. Ignition OFF, reconnect the vehicle USB cable to the T11 multimedia player interface module.
  5. Disconnect the USB cable at the X83 auxiliary audio input.
  6. Connect the EL-50334-4 Type A female to Mini B female adapter to the USB cable.
  7. Ignition ON, radio ON, connect a USB device to the EL-50334-4 adapter . 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 USB cable.
  8. Ignition OFF, reconnect X83 auxiliary audio input to the vehicle USB cable.
  9. Ignition ON, radio ON, connect a USB device to the X83 auxiliary audio input. Verify the infotainment system switches to USB as the audio source.
    10. ⇒If the infotainment system does not switch to USB as the audio source, replace the X83 auxiliary audio input.
  10. Ignition OFF, disconnect the X1 harness connector at both the A11 radio and the T11 multimedia player interface module. Test for infinite resistance between the circuits listed below and ground:
    11. • Auxiliary Audio Common Circuit A11 Radio X1 Terminal 23
    • Left Auxiliary Audio Circuit A11 Radio X1 Terminal 24
    • Right Auxiliary Audio Circuit A11 Radio X1 Terminal 10
    ⇒If not the specified value, test the signal circuit for a short to ground.
  11. Test for less than 5 Ω between the A11 radio X1 terminal 24 and the T11 multimedia player interface module X1 terminal 14.
    12. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  12. Test for less than 5 Ω between the A11 radio X1 terminal 10 and the T11 multimedia player interface module X1 terminal 15.
    13. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  13. Test for less than 5 Ω between the A11 radio X1 terminal 23 and the T11 multimedia player interface module X1 terminal 4.
    14. ⇒If greater than the specified value, test the signal circuit for an open/high resistance.
  14. Reconnect the X1 harness connector at the A11 radio.
  15. Ignition ON, test for less than 1 V between the circuits listed below and ground:
    16. • Auxiliary Audio Common Circuit T11 Multimedia Player Interface Module X1 Terminal 4
    • Left Auxiliary Audio Circuit T11 Multimedia Player Interface Module X1 Terminal 14
    • Right Auxiliary Audio Circuit T11 Multimedia Player Interface Module X1 Terminal 15
    ⇒If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the A11 radio.
  16. If all circuits test normal, replace the T11 multimedia player interface module and reconnect all harness connectors. Connect and operate the USB device. If audio is still not heard from the device, replace the A11 radio.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Audio Disc Player Receptacle Replacement
    •  USB Receptacle Replacement
    • Control Module References for Radio or multimedia player interface module replacement, setup, and programming
   


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