Component Location
General Description
The HECU(Hydraulic and Electronic Control Unit) is one body of the ECU(Electronic Control Unit) and HCU(Hydraulic Control Unit). The HCU consists of an accumulator, a return pump and solenoid valve assay. The increasing,maintaining and decreasing of brake pressure to each wheel cylinder is done by the electronic motor. And the brake pressure in accordance with the control logic is supplied by the pump on the basis of wheel speed sensor's signal.
DTC Description
The HECU monitors the solenoid valve circuit for a normal operation and if there is a open or short circuit in the valve, this DTC is set.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | Internal monitoring
| Faulty HECU
|
Threshold valve | When there is a open circuit or short circuit in the solenoid valve
|
Fail-Safe | ABS/EBD/ESP funtions are inhibited. ABS/EBD/ESP warning lamps are activated.
|