Defect Code 28

Defect Code 28:

*D* Defect code memory: 28 ADV module defective:

Explanation: This defect code is stored when the general module (GM) detects a detect in activation via the diagnostic link from ADV module.

Possible causes:

- Wires
- Voltage supply K12 ADV module
- K12 ADV module
- Relay module

Troubleshooting: As displayed on screen