The HECU supplies operating voltage with Steering angle senor (12V), Yaw rate & lateral G sensor (12V), G sensor (5V).
The HECU monitors supply voltage of each sensor for normal ESP control.
If supply voltage is out of specified range ABS/ESP warning lamps are turned on and ABS/ESP controls are inhibited.
A failure is detected if the external sensor supply voltage is out of the specified range for more than the specified min. fault duration.
Item | Detecting Condition | Possible cause |
DTC Strategy |
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Battery Voltage Monitoring |
•
Faulty HECU
•
Poor connection in power supply circuit to sensor |
Enable Conditions |
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During sensor power ON, If the voltage of sensor power is out of the specified range for 500ms.
•
During sensor power OFF, If the voltage of sensor power is out of the specified range for 500ms. | |
Fail Safe |
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ABS/ESP functions are inhibited, EBD function is allowed and the ABS/ESP warning lamps are activated. |
