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

Output Diagnostic Test Mode


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 a malfunction is detected during output Diagnostic Test Mode (DTM), possibly Find and repair malfunction cause.
- Output Diagnostic Test Mode (DTM) can only be performed once. Switch ignition off and on again to perform Output Diagnostic Test Mode (DTM) again.


Initiating 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 ->
Loud speaker


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 of wires to each other" for the hands-free speaker can only be detected via the output Diagnostic Test Mode (DTM). If this malfunction occurs, it is stored in DTC memory (00851).


- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
Loud speaker Telephone/Navigation-R39


For approx. three seconds a sound will be put out on the speaker output (hands-free speaker) i.e. front left speaker) a sound is put out. The sound are voice phases (if voice is loaded in the navigation) or "crackling".

- Press -> 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 second interval between normal and inverse illustration.

- Press -> button.

Indicated on display


Output Diagnostic Test Mode ->
End


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

Indicated on display


Rapid data transfer HELP
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