MID Self Test
The MID test function is activated by pressing the first and last menu buttons while switching the ignition on. The following items can be tested.
Unit Identification - This information appears for approximately 3 seconds when the ignition is switched on. The ID information displayed is
- Hardware number
- Software number
- Variant index
All other test functions must be activated while the ID information is displayed. If this is not done, the MID test is cancelled after the ID information is posted.
Display Test - Activate this test by pressing the display menu button. All elements of the main and menu displays are illuminated with different check patterns.
Button test - Start the test by pressing the button test menu button. All the buttons on the MID have been assigned an alphabetical letter that will appear when the button is pressed.
Volume control test - The test is carried out by pressing the menu button and turning the volume knob. Numbers from 01 to 36 appear on the display indicating each step of knob rotation.
Status LED test - Activate the test by pressing the menu button. All status LEDs are illuminated.
Scheme 1
Radio Test Functions
With the ignition switch in KL R the radio can be switched into the test function mode by pressing and holding the WB (weather band) until the MID displays a serial number in the MID main display.
The test functions include
- Radio Serial Number
- Radio Production Date
- DSP Recognition
- Road speed dependent volume control (GAL 1 -4)
- Station Signal Strength
The road speed dependent volume control can be adjusted to make the volume increase more audible (4) or less audible (1).