Audio System Symptom Troubleshooting - USB device does not function (with navigation)
USB device does not function (with navigation)
NOTE:
  • Check the vehicle battery condition first.
  • Check the connectors for poor connections or loose terminals.
  • Make sure you have the client's USB device to use for testing.
  • Some music players (connected through the USB port) may not work with all models.
  • Make sure that the music player connected to the USB port works properly.
  • The USB memory used for testing should conform to the ‘‘USB mass storage class'' standard.
  • The USB function is not compatible with a USB memory of 128 MB or below.
  • The music must be saved to the player as WMA (Windows Media Audio) files or MP3.
  1. Connect a known-good music player to the USB port.
  1. Turn the ignition switch to ON (II).
  1. Press the AUX button, and check if it changes to USB mode.
Does it change to the USB mode?
YES -
Go to Step 4 .
NO -
Go to Step 13 .
  1. Check that the client's USB memory device for inspection functions properly. When connected to a known-good vehicle.
Is the system normal?
YES -
Go to Step 5 .
NO -
Check that there is no dirt or damage in the USB port. If the USB port is OK, the music player is either defective or incompatible.■
  1. Check if NO DATA appears when the music player is connected to the USB port.
Does NO DATA appear?
YES -
Go to Step 6 .
NO -
Go to Step 9 .
  1. Check the connectors at USB adapter unit connector B (5P) and the USB adapter cable and the USB jack.
Are the connectors and terminals connected properly?
YES -
Go to Step 7 .
NO -
Repair the connection, and recheck.■
  1. Disconnect USB adapter unit connector B (5P).
  1. Check for continuity between USB adapter unit connector B (5P), and the USB jack according to the table.
    USB adapter unit connector
    USB jack
    USB VBUS
    B1
    No. 1
    USB DATA−
    B2
    No. 2
    USB DATA+
    B3
    No. 3
    USB GND
    B4
    No. 4
    USB SH
    B5
    No. 5

Is there continuity?
YES -
Replace the USB adapter unit or the USB jack. ■
NO -
Repair open in the wires between the USB adapter unit and the USB jack.■
  1. Turn on the audio unit, and check for sound in each mode (AM, FM, and CD).
Is the sound normal?
YES -
Go to Step 10 .
NO -
Go to no Sound is heard from the speaker(s). ■
  1. Turn the ignition switch to ON (II).
  1. Disconnect USB adapter unit connector A (14P) and audio unit connector C (14P).