Output Diagnostic Test Mode (DTM) (Scan Tool Function 03)

Output Diagnostic Test Mode (DTM) (Scan Tool Function 03)


NOTE:
- Output Diagnostic Test Mode is only possible when vehicle is stationary and engine is not running!
- The navigation system must be switched on.
- If malfunctions are found during output Diagnostic Test Mode, determine cause of malfunction and repair if necessary.
- Output Diagnostic Test Mode (DTM) can only be performed once. Switch ignition off and on again to perform Output Diagnostic Test Mode (DTM) again.


Initiate Output Diagnostic Test Mode
- Press buttons -0- and -3-. This selects "Output Diagnostic Test Mode (DTM)", function 3.

Indicated on display


Rapid data transfer Q
03 - Output Diagnostic Test Mode


- Press -Q- button to confirm input.

Indicated on display


Output Diagnostic Test Mode ->
Loudspeaker


The hands-free speaker is briefly supplied with current (not audible). The hands-free speaker is only connected directly to the navigation control module if no radio system is installed, the output Diagnostic test Mode (DTM) only makes sense in this case.
If a radio system (without BOSE) is installed, front left speaker is used for voice output. For vehicles with BOSE-sound system, the voice output occurs via the radio to the hands-free speaker.


NOTE: The malfunction type "short circuit between wires" for the hands-free speaker can only be detected via the output Diagnostic Test Mode (DTM). If this malfunction occurs, it is stored as a DTC in the DTC memory (00851).


- Press the -> button.

Indicated on display


Output Diagnostic Test Mode ->
Loudspeaker Telephone/Navigation - R39


The speaker output (hands-free speaker/front left speaker) will emit a sound for approx. three seconds. The sounds will be spoken phrases (if language is loaded in navigation) or "cracking".

- Press the -> button.

Indicated on display


Output Diagnostic Test Mode ->
Output radio display instrument cluster


The following test pattern appears in the instrument cluster display:

DISPLAY
TEST

The test pattern appears in the complete display range.
The display changes in 4 seconds interval between normal and inverse illustration.

- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
End


- Press the -> button.
- The tester returns to the "Select function" mode.

Indicated on display


Rapid data transfer HELP
Select function XX