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

Output Diagnostic Test Mode (DTM) (Function 03)

NOTE:
- Output Diagnostic Test Mode (DTM) is only possible when vehicle is stationary and engine is not running.
- The navigation system must be switched on.
- If malfunctions are detected during Output Diagnostic Test Mode, determine cause of malfunction and repair.

In the function "Output Diagnostic Test Mode (DTM)" the speakers and secondary display in instrument cluster are checked.

Initiating Output Diagnostic Test Mode (DTM):
- 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 (DTM)

- Press -Q- button to confirm input.

Indicated on display:

Output Diagnostic Test Mode (DTM) ->
Speaker

The speaker is briefly supplied with current (not audible).

NOTE: The malfunction type "short circuit of wires to each other" for the 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 (DTM) ->
Speaker connection

For approx. three seconds a sound will be put out on the speaker output. The sounds will be spoken phrases (if language is loaded in navigation) or "crackling".

- Press -> button.

Indicated on display:

Output Diagnostic Test Mode (DTM) ->
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 (DTM) ->
End

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

Indicated on display:

Rapid data transfer HELP
Select function XX