The brake light signal is a reference to judge driver's intention for braking.
The HECU checks open or short circuit of brake light switch for normal ESP(ESC) control.
If an error is present, the warning lamp will illuminate.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Open circuit monitoring | 1. Open circuit in brake switch line 2. Faulty brake light switch 3. Faulty input stage in HECU |
MonitoringPeriod |
•
Continuous (only normal voltage) | |
Enable Conditions |
•
In case of over 10kph speed and under 5 bar of Pressure sensor input, monitoring a fault if BLS keeps on for 60s
•
Monitoring a fault if BLS keeps off for 2s 3s in case of over 15 bar of pressure sensor input
•
Monitoring a fault if BLS keeps off for 1s in case of over 50 bar of pressure sensor input | |
Fail Safe |
•
Inhibit the ESP(ESC) control and allow the ABS/EBD control
•
The ESP(ESC) warning lamp is activated |
