The ESP is a system to stabilize a car during understeer and oversteer events by supplying appropriate wheel with braking pressure according to signal of yaw & G sensor, SAS, WSS, pressure sensor.
Under normal conditions, the inlet valves of all four wheels are not closed during control for longer than 1.28s or If the controller requests pressure-hold or pressure-decrease for longer than 1.28s, a fault is detected.
The ABS/ESP warning lamp is turned ON and the EBD warning lamp is turned OFF.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Signal monitoring | 1. Faulty HECU |
Monitoring Period |
•
Continuous | |
Enable Conditions |
•
If continuous operation of ESP control to one (or over) wheel is detected over 10s. | |
Fail Safe |
•
The ABS/ESP functions are inhibited, allow the EBD control.
•
The ABS/ESP warning lamps are activated. |
