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SEL255W
Fail-safe System
NAEL0374
DESCRIPTION
NAEL0374S01
When the fail-safe system senses a malfunction, it deactivates
ASCD operation. The SET indicator in the combination meter will
then flash.
MALFUNCTION DETECTION CONDITIONS
NAEL0374S02
Detection conditions
ASCD operation during malfunc-
tion detection
I ASCD steering (RESUME/ACCEL, CANCEL, SET/COAST) switch is stuck.
I Vacuum motor ground circuit or power circuit is open or shorted.
I Air valve ground circuit or power circuit is open or shorted.
I Release valve ground circuit or power circuit is open or shorted.
I Vehicle speed sensor is faulty.
I ASCD control unit internal circuit is malfunctioning.
I ASCD is deactivated.
I Vehicle speed memory is can-
celed.
I ASCD brake switch or stop lamp switch is faulty. I ASCD is deactivated.
I Vehicle speed memory is not
canceled.
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Fail-safe System
EL-256
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