If MCU can't erase or write a data of the EEPROM or the master/slave MCU detects abnormal operation in RAM, ROM, Interrupt, Timer, A/D converter and Cycle time, EPB ECU sets DTC C1604.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Internal Monitoring | 1. Defected Internal EPB ECU | |
Threshold Value | ECU Hardware(Case1) |
•
If MCU can't erase or write a data of the EEPROM
•
If the master/slave MCU detects abnormal operation in RAM, ROM, Interrupt, Timer, A/D converter and Cycle time | |
Current Sensor Open, Short to GND/BAT(Case2) |
•
Current sensor voltage is either higher than 4.7V or lower than 0.1V for more than 200 msec. | ||
Current Sensor Offset Abnormal(Case 3) |
•
Current value is 2A for more than 200 msec after 5 seconds upon complete control | ||
CAN Hardware(Case 4) |
•
CAN Hardware Failure | ||
Fail Safe |
•
EPB operation inhibited | ||
Warning Indicator Lamp Status |
•
Warning Indicator Lamp "ON" | ||
Clear Condition |
•
Ignition "OFF" and then "ON" | ||
