Audio System Symptom Troubleshooting - Radio tuner does not change stations
Radio tuner does not change stations
NOTE:
  • Check the vehicle battery condition first.
  • Check the connectors for poor connection or loose terminals.
  1. Turn the ignition switch to ON (II).
  1. Turn on the audio unit and check the audio information on the display panel.
Does the audio information display properly?
YES -
Go to Step 3 .
NO -
Go to audio power switch will not turn on. ■
  1. Operate the tuning knob to see if the radio station changes.
Does the radio station change?
YES -
Intermittent failure: the tuning knob is OK at this time.■
NO -
  • With navigation system: Go to Step 4 .
  • Without navigation system: Substitute a known-good audio unit and recheck. If the symptom/indication goes away, replace the original audio unit. ■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect audio/navigation switch panel 24P connector and audio unit connector C (12P).
  1. Check for continuity between audio unit connector C (12P) and audio/navigation switch panel 24P connector according to the table.
    Audio unit connector
    Audio/navigation switch panel connector
    Wire color
    C3
    No. 18
    RED
    C8
    No. 6
    GRN

Is there continuity?
YES -
Go to Step 7 .
NO -
Repair open in the wire(s) between the audio unit and audio/navigation switch panel.■