Outline Of Diagnosis
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
Diagnosis 1
- Detect the malfunction in EEPROM area of the TCM.
- Judge as NG if an attempt to write to EEPROM area failed.
Diagnosis 2
- Detect the malfunction in EEPROM area of the TCM.
- Judge as malfunction when the consistency in the EEPROM area is lost.