Diagnostic Tester, Connecting

Diagnostic Tester, Connecting

Recommended Special Tools, Workshop Equipment, Testers, Measuring Instruments and Auxiliary Items







- VAS 5052 Vehicle Diagnosis and Service Information System with
- VAS 5052/3 diagnostic cable

Requirements
- The respective fuses of the Motronic fuel injection and ignition system must be OK
- Battery voltage must be at least 11.5 V.
- All electrical consumers such as, for example, lights and rear window defroster must be switched off.
- The parking brake must be applied, otherwise the daytime running lights are switched on.
- For vehicles with automatic transmission, selector lever must be in position "P" or "N".
- If the vehicle is equipped with an air conditioning system, this must be switched off.
- The Ground (GND) connections between engine and body must be OK.
- Ignition switched off.

Work Procedure
Connect diagnostic tester (VAS 5052) using (VAS 5052/3) diagnostic cable as follows:







- Connect diagnostic cable connector to Data Link Connector (DLC) - arrow-.
- Depending on the desired diagnostic mode, it is necessary to:

switch ignition on
or
start engine, selectable diagnostic modes under address word 33. Selectable Diagnostic Modes Under Address Word 33, OBD

NOTE:
- Respective operation of the diagnostic tester: => Operating instructions of the diagnostic tester
- If no display appears on diagnostic tester, check voltage supply at Diagnostic Link Connector (DLC): See Electrical Wiring Diagrams, Troubleshooting Component Locations