Component Tests and General Diagnostics

REQUIREMENTS
^ Fuse 22 (S22) OK.




CHECKING VOLTAGE SUPPLY
- Check voltage on black Data Link Connector (DLC) -A- in vehicle and note polarity.

Terminal 1 = Battery Ground (GND) (-)
Terminal 2 = Battery Positive Voltage (B+)




- Check VAG 1551/1 adapter harness for continuity.