Audio System Symptom Troubleshooting - Switches does not function (With Navigation Type)

Audio System Symptom Troubleshooting - Switches does not function

NOTE: In order to troubleshoot the main power switch, go to ‘‘Power 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.

2.	Check to see if the buttons that do not function all belong to switch A. Are they all switch A's? YES - Faulty front printed circuit board and audio unit.n NO - Go to 3.

3.	Check to see if the buttons that do not function all belong to switch B. Are they all switch B's? YES - Faulty front printed circuit board and audio unit.n NO - Go to 4

4.	Check to see if the buttons that do not function all belong to switch C. Are they all switch C's? YES - Faulty front printed circuit board, rotary switch circuit board and audio unit.n NO - Go to 5.

5.	Check to see if the buttons that do not function all belong to switch D. Are they all switch D's? YES - Faulty front climate control unit and A/C switch circuit board.n NO - Go to 6.

6.	Check to see if the buttons that do not function all belong to switch E. Are they all switch E's? YES - Faulty front printed circuit board, audio unit and navigation display.n NO - Go to 7.

Check to see if the button that do not function all belong to switch F.

**Switch List:**
Switch A:	AM/FM, CD/AUX, SCAN, SEEK/SKIP, UP/DOWN, CH/DISC UP DOWN, LOAD, EJECT
Switch B:	INFO, MAP, MENU, JOY, CANCEL, SET UP, ZOOM UP/DOWN
Switch C:	TUNE Push MODE
Switch D:	TEMPERATURE CONTROL, AUTO, OFF, DEF, RECIRCURATION, REAR DEF, DUAL
Switch E:	AUDIO
Switch F:	A/C

Are they all switch F's?

YES - Faulty front printed circuit board, climate control unit and navigation display.n

NO - Front printed circuit board.n