DTC C1604 Ecu Hardware Error: DTC Detecting Condition

DTC DETECTING CONDITION

Item	Detecting Condition	Possible cause
DTC Strategy	Internal monitoring	Faulty HECU
Detect Mode	Initial Check Outside the ABS control cycle Inside the ABS control cycle Diagnosis mode Failure mode
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, ROM, INTERRUPT, TIMER, A/D CONVERTER, CYCLE TIME.
Fail Safe	System down. The ABS/EBD functions are inhibited. The valve relay and all solenoids are prevented from being switched on. The ABS/EBD warning lamps are activated.