Alarm Horn H12, hecking 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 → VAS 5051 / 5052  under Vehicle Diagnostic, Testing and Information System VAS 5051 / 5052, onnecting 
• 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 (Repair Group 01; 27; 50-97)"
• Select "Repair work int/ext (Repair Group 01; 55 to 77)"
• Select "01 - Self-diagnosis"

• Select "46 - Central module comfort system"
• Select "Functions"
• Select "Output Diagnostic Test Mode (DTM)"
• Press ">" to confirm.

• Follow tester prompts