Alarm Horn: Testing and Inspection

Alarm Horn H12, Checking With Output Diagnostic Test Mode (DTM)

Alarm Horn H12 can be checked via output Diagnostic Test Mode (DTM) of Comfort System Central Control Module J393.
- Connect Vehicle Diagnosis, Testing and Information System VAS 5051/5052
- Select operating mode "Guided Fault Finding"
- Enter information as prompted and press ">" to confirm.

After the DTC memory of all control modules has been checked:
- Use "Go to" button to select "Function / Component Selection"
- Select "Body"
- Select "Repair work int/ext"
- Select "01 - Self-diagnosis"
- Select "46 - Central module comfort system"
- Select "Functions"
- Select "Output Diagnostic Test Mode (DTM)"
- Press ">" to confirm.
- Follow tester prompts