| DTC Strategy |
|
- Open circuit in brake switch line
- Faulty stop lamp switch
- Faulty HECU
|
| Case1 |
Monitoring Period |
- Continuous (only no under voltage is not detected)
|
| Enable Conditions |
- If the BLS-signals is high for 60 s, while the gas pedal is stepped, with vehicle speed > 10.8km/h, offset compensated pressure < 5 bar and no control is active, a fault is set.
|
| Case2 |
Monitoring Period |
- Continuous (only normal voltage)
|
| Enable Conditions |
- For redundancy reasons an additional BLSpVor-signal is created by the pressure sensor signal. If the pressure sensor is compensated, the threshold for generating the BLSpVor signal is 10 bar. If the pressure sensor is not compensated, the threshold is increased by 15bar. If this signal is set without any hardware - BLS - signals being set for at least 1s.
- If the pressure signal is higher than 80bar and not both of the hardware-BLS are set, a fault is stored after 1s.
|
| Fail Safe |
- Inhibit the ESC control and allow the ABS/EBD control.
- The ESC warning lamps are activated.
|