DTC 2-1: EEPROM Communication Error; DTC 2-2: EEPROM Checksum Error: Description
These DTCs are stored when an error occurs in the CPU of the telephone ECU assembly.
DTC DESCRIPTION CHART
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| 2-1 | An internal communication error in the telephone ECU assembly. | Telephone ECU assembly |
| 2-2 | A checksum error in the telephone ECU assembly. | Telephone ECU assembly |
NOTICE:
DTC DESCRIPTION CHART
| Current DTC | Historic DTC only |
|---|---|
| Disconnect and reconnect battery. Check for current DTCs. If DTC returns, replace telephone ECU assembly and mayday battery (backup battery). | If this is only a historic DTC, the system has already recovered normally and should be operating normally. Clear historic DTCs. |