ABS unit arrived completely unresponsive. Board-level diagnostics confirmed dead main processor as root cause.
Work performed:
- Full board diagnostics to identify failure point
- Dead main processor confirmed — component-level fault isolated
- Processor removal and pad preparation
- BGA/QFP reballing and new processor installation
- Firmware flash and module initialization
- Bench test and full ABS function verification
Result: Module fully restored to factory operation. ABS functionality confirmed across all test cycles.