FAIL SAFE
Comparison between Proportioning valve and EBD
FAIL CAUSE
SYSTEM
WARNING LAMP
ABS
EBD
ABS
EBD
None
ON
ON
OFF
OFF
1-Wheel speed sensor failure
OFF
ON
ON
OFF
Pump malfunction
OFF
ON
ON
OFF
Low voltage
OFF
ON
ON
OFF
2 or more wheel speed sensor failure
Solenoid valve failure
HECU malfunction
Valve relay failure
Over voltage
Other failure
OFF
OFF
ON
ON
Page 6 of 6
24.04.2008
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