| DTC Strategy |
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- Open circuit in brake switch line
- Faulty brake light switch
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| Case 1 |
Monitoring Period |
- Continuous (only no under voltage is detected)
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| Enable Conditions |
- If the BLS-signals is high for 60 s at following condition.
- the gas pedal is stepped
- vehicle speed > 10.8 km/h
- offset compensated pressure < 5 bar
- no control is active
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| Case 2 |
Monitoring Period |
- Continuous (only normal voltage)
|
| Enable Conditions |
- For redundancy reasons an additional BLSpVorsignal 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 15 bar. If this signal is set without any hardware-BLS-signals and if no pomp is operated during that time, a fault is set after the braking.
- If the pressure signal is higher than 80 bar and not both of the hardware-BLS are set, a fault is stored after 1s.
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| Fail-Safe |
- Inhibit the ESC control and allow the ABS/EBD control.
- The ESC warning lamp is activated.
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