FAILURE DIAGNOSISTNV DI Service Manual 1-197Method and Procedure of Failure DiagnosisECU Internal and Communication ErrorsECU Internal ErrorsRelated DTCWork flow*For details of the work, see after-mentioned "."For the operation of thediagnosis tool, see “Diagnosis tool Operation Manual” separately.DTCP0601/12 EEPROM error (read/write error)P1601/2 EEPROM error (Checksum)P0605/12 Flash ROM error (Checksum A)P1605/2 Flash ROM error (Checksum B)P1606/2 Flash ROM error (Checksum C)P1610/12 Failure A with Sub-CPUP1611/12 Failure B with Sub-CPUP1612/12 Failure C with Sub-CPUP1620/12 Map format errorOK017557-00ERewrite E-ECU software or replace E-ECU.1. Same work asabove-mentioned initialdiagnosisA. Check the currentfailure displayCheck the failureconditions.Current failureexists.Initial diagnosis with the diagnosis toolFailure diagnosis flow[Check items]: Fault CodeTurn key switchON/OFFCheck the failureconditions.RepeatDTC in the failure history indicationDTC in the failure history indication