On Board Diagnostic, Function

On Board Diagnostic, Function

Anti-theft alarm functions are controlled by the Comfort System Central Control Module -J393- which has On Board Diagnostic (OBD) capability. If malfunctions occur in monitored components, Diagnostic Trouble Codes (DTC) will be stored in memory.
- Connect VAS 5051/5052 to Data Link Connector (DLC).
- Select operating mode "Guided Fault Finding"
- Enter information as prompted and press ">" to confirm.
- Tester checks DTC memory of all control modules including -J393-, and displays any DTCs related to anti-theft alarm system if present.
- Press "Go to" button
- Select "Function / Component Selection"
- Select: "Body"
- Select: "Body +Collision Repair"
- Select "Systems capable of self diagnosis"
- Select "Convenience system"
- Select "Functions -Anti-theft alarm system" or "Comfort system central control module -J393-" as applicable.
- Follow tester's prompts.