Output Diagnostic Test Mode (Function 03)

Output Diagnostic Test Mode (DTM)

The components displayed in the Output Diagnostic Test Mode (DTM) can differ depending upon the equipment fitted to the vehicle. For example on vehicles without ATA there will be no step "1" as listed in the table below.

The Output Diagnostic Test Mode (DTM) activates the following components in the stated sequence:







Work sequence
- Connecting scan tool, initiating On Board Diagnosis (OBD).
Scan Tool, Connecting
Convenience System, Initiating On Board Diagnostic (OBD)

Indicated on display:

Rapid data transfer HELP
Select function XX

- Operate scan tool taking into account the information on the display:
- Input 03 for "Final control diagnosis" function.
- Switch off ignition and remove ignition key from ignition lock.

Indicated on display:

Rapid data transfer -Q
03-Final control diagnosis

- Confirm entry with -Q- button.

Indicated on display:

Final control diagnosis ->

Switch from test step to test step using the -> key, See Output Diagnostic Test Mode (DTM).

The Output Diagnostic Test Mode (DTM) can be aborted by pressing the - C- button.

- Press -> button.

If a component does not function:
- Continue Output Diagnostic Test Mode (DTM) to the end.

Reintroducing Final control diagnosis (Output Diagnostic Test Mode (DTM)) is possible only after terminating the On Board Diagnosis (OBD) and switching the ignition off and on again.