Component Inspection
- IG "OFF"
- IG "ON"
- After connecting scantool, check DTC on the scantool.
- Using GDS, Erase the DTCs.
- Check if the pressure sensor's service data shows '0 bar' on the scantool while not pressing the brake pedal.
- Check if the pressure sensor's service data rises on the scantool while pressing the brake pedal.
- Is the pressure sensor's data unusually shown?
YES
Substitute with a known-good HECU and check for proper operation.
If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
In a case of replacing HECU, operate each sensor's calibration by scantool, including the steering angle sensor's calibration.
NO
This fault is intermittently caused by pressure sensor.
Go to "VERIFICATION OF VEHICLE REPAIR " procedure.