Radio Systems - "Concert II", "Symphony II" and "Symphony II Bose(R)"

On Board Diagnostic, Function

Radio systems are controlled by an internal microprocessor with On Board Diagnostic (OBD) capability. If malfunctions occur in monitored components or wiring, Diagnostic Trouble Codes (DTC) are stored in memory.

Troubleshoot radio system malfunctions and code or adapt radio functions by performing OBD program using Vehicle Diagnosis, Testing and Information System VAS 5051/5052 in operating mode "Guided Fault Finding".

VAS 5051/5052 connected and in mode "Guided Fault Finding":
- Enter appropriate model, equipment and model year information and press ">" to confirm.

After the DTC memory of all control modules has been checked:
- Press "Go to" button
- Select: "Function / Component Selection"
- Select: "Body"
- Select: "Electrical Equipment"
- Select: "01 - On Board Diagnostic (OBD) capable systems"
- Select: "56 - Radio"
- Select: appropriate option
- Follow tester prompts.