Output Diagnostic Test Mode (DTM)

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:






Special tools, testers and auxiliary items
- V.A.G 1551 scan tool or vehicle V.A.G 1552 System tester with cable V.A.G 1551/3
- V.A.G 1594 Adapter set
- V.A.G 1527 LED test light
- Electrical wiring diagram

Work sequence
- Connecting scan tool. Scan Tool Connecting
- Initiating On Board Diagnostic (OBD). On Board Diagnostic (OBD) For Convenience 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 "Output Diagnostic Test Mode (DTM)" function.
- Switch off ignition and remove ignition key from ignition lock.

Indicated on display:

Rapid data transfer Q
03 Output Diagnostic Test Mode (DTM)

- Confirm entry with the -Q- button.

Indicated on display:

Output Diagnostic Test Mode (DTM) ->

Perform individual tests: See table.

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

- Press -> button.

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