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C1604 ECU Hardware Error: DTC Detecting Condition

Item Detecting Condition Possible cause
DTC Strategy
  • Internal Monitoring
  • Faulty HECU
Enable Conditions
  • When the MCU can't erase or write a data of the EEPROM.
  • When the master/slave processor detects abnormal operation in RAM, status register, interrupt, timer, A/D converter and cycle time.
Fail Safe
  • The ABS/EBD/ESC functions are inhibited.
  • The ABS/EBD/ESC warning lamps are activated.
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