Initiating output DTM

WARNING: This page is about a different car, the 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

With the ignition switched off, connect Diagnostic Operation System VAS 5051A using, for example, Diagnostic Cable - 3 Meter VAS 5051/5A and K-Lead Adapter Vas6017B VAS 6017B (or K-Lead Adapter VAS 6017A) to the 16-pin diagnostic socket in the vehicle → Diagnostic Operation System VAS 5051A, connecting and selecting functions .
Switch on ignition/start engine.

NOTE:

Switch on ignition (engine not running, for checking activation of A/C Compressor Regulator Valve N280).
Start engine (to check activation of Coolant Fan V7).

Set "Auto" mode on the operating and display module, Climatronic Control Module J255.
Use address word "08" to select A/C heater electronics → Diagnostic Operation System VAS 5051A, connecting and selecting functions .
Open instrument panel vents.
Check DTC memory of operating and display module, Climatronic Control Module J255 → Diagnostic Trouble Code (DTC) Memory, checking (function 02) .

Fig 1: Locating Control Module Identification With Code Indicated On The Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Indicated on display of Diagnostic Operation System VAS 5051A :

Select function "03 - Output Diagnostic Test Mode (DTM) diagnosis".

Indicated on display of Diagnostic Operation System VAS 5051A :

Fig 2: Identifying Display Field Showing Which Control Element Is Currently Being Activated & Gives Consecutive List Of Control Elements Already Activated

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display field - 1 - shows which control element is currently being activated (e.g. 1st control element in test).
Display field - 2 - gives a consecutive list of control elements already activated and the one currently being activated. The one currently being activated appears in the bottom line.

Touch → key to select next component. Function and sequence → Activated Actuators .

NOTE:

Touch ← key to return to selection program.
Output Diagnostic Test Mode (DTM) diagnosis can be terminated by pressing C key.
On completion of Output Diagnostic Test Mode (DTM) diagnosis, check DTC memory → Diagnostic Trouble Code (DTC) Memory, checking (function 02) .
If Output Diagnostic Test Mode (DTM) diagnosis is aborted, check DTC memory → Diagnostic Trouble Code (DTC) Memory, checking (function 02) and read measuring value block (display group "002") → Read Measuring Value Block (function 08) .