The HECU monitors the battery voltage by reading the value of voltage.
When the voltage is lower than the expected normal value, this code is set.
The ABS/TCS/ESC functions are prohibited and the EBD function is allowed on LOW VOLTAGE CONDITION, the ABS/EBD/TCS/ESC function are prohibited on UNDER VOLTAGE CONDITION.
If the voltage recovers, to within normal operating ranges, then the controller returns to normal operations as well.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Battery Voltage Monitoring | 1. Poor connection in power supply circuit (ABS) 2. Faulty HECU | |
Monitoring Period |
•
Continuous | ||
Case1 (Low voltage) | Enable Conditions |
•
When Vign is lower than 9.4±0.5V for more than 500ms in speed of over 6Kph(3.7mph).
•
- If IGN voltage is recovered to 9.8±0.5V, the system recovers to normal state | |
Fail-Safe |
•
The ABS/ESP(ESC) functions are inhibited
•
The ABS/ESP(ESC) warning lamps are activated | ||
Case2 (Under voltage) | Enable Conditions |
•
When Vign is lower than 7.6±0.5V for more than 500ms in speed of over 6Kph(3.7mph). - If IGN voltage is recovered to 7.8±0.5V, the system recovers to normal state | |
Fail-Safe |
•
The ABS/EBD/ESP(ESC) functions are inhibited
•
The ABS/EBD/ESP(ESC) warning lamps are activated | ||
