Software Incompatibility With Accessory Protocol Interface Module

Where it lives

For U031F, start at the module the description names.

Check these first

• Software in the Accessory Protocol Interface Module that does not match the rest of the vehicle
• The Accessory Protocol Interface Module replaced without programming to the vehicle
• Corrupted or outdated calibration in the Accessory Protocol Interface Module
• A module programming step that did not complete

What to do next

1. Read stored codes on every module and note the mismatched part numbers
2. Record the software and calibration part numbers in the Accessory Protocol Interface Module
3. Reprogram the Accessory Protocol Interface Module with the latest calibration for the vehicle
4. Check for a service bulletin that covers the Accessory Protocol Interface Module software
5. Replace the Accessory Protocol Interface Module if programming will not complete
6. Clear the code and retest

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