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HDC Operation
Turning the ignition ON (From hence, this signifies the
operation mode with engine running. If the ignition is turned
OFF, HDC stops the operation even HDC switch is still ON.)
Not available
HDC switch OFF
HDC system is defective
Stand-by
HDC switch ON
HDC switch is turned ON, but it does not operate because the operating
requirements (road steep grade or vehicle speed) are not met.
In operation
HDC is operating
HDC switch ON and the operating requirements are met.
System
High temperature of
overheats
brake system (over
Too high temperature of brake system
No independent temperature sensor, but the programmed logic in HECU estimates
the temperature based on the frequency and conditions of HDC.
HDC Indicator
Blinking (0.5s)
Stand-by
In operation
The indicator blinks in green and red
(0.5s)
HDC Warning
Lamp
Green
Red
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
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