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:







1. When performing Output Diagnostic Test Mode (DTM) the "signal close sliding sunroof", the ignition and S-terminal must be inactive (no key in ignition/starter switch) and one of the front doors must be open.
2. Switch in operating unit

Work sequence
- Connecting scan tool, initiating On Board Diagnosis (OBD).
Scan Tool Connecting
On Board Diagnosis (OBD) For the Central Locking System, Initiating

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 table.

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.