Audio Unit Button Does Not Work
Audio unit button does not workNOTE: In order to troubleshoot the main power switch, go to "Power switch will not turn on".
1. Refer to the following switch list, and find the appropriate switch for each button. Then perform the following exercise to identify the switch that does not work by operating various buttons which only belong to that switch.
Switch list
Switch A: AM/FM, XM, 6DDISC, AUX, DISP, SCAN, RPT, ASEL/RDM, SEEK±, DVD, REAR PWR, FRONT SOURCE, REAR SOURCE, REAR CTRL, ELECT, ROAD, PWR, SOUND, 1-6
Switch B: INFO, MAP/GUIDE, MENU, CANCEL, SET UP, AUDIO, interface dial, display
2. Check to see if the buttons that do not function all belong to switch A.
Are they all switch A's?
YES - Substitute a known-good audio unit and recheck. If the symptom/indicated goes away, replace the original audio unit. If the symptom is still present, substitute a known-good audio panel and recheck. If the symptom/indication goes away, replace the original audio panel.
NO - Go to Step 3.
3. Check to see if the buttons that do not function belong to switch B.
Are they switch B's?
YES - Faulty audio-HVAC display panel and audio unit. Replace the audio-HVAC display module.
NO - Check the connections between the interface dial and audio panel, and recheck the function. If the symptom is still present, substitute a known-good audio unit and recheck. If the symptom/indication goes away, replace the original audio unit. If the symptom is still present, substitute a known-good audio panel and recheck. If the symptom/indication goes away, replace the original audio panel.