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The Vehicle Speed Cannot Be Set Even If The SET/- Button Is Pressed. (In the settable vehicle speed range)
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The Vehicle Speed Cannot Be Set Even If The SET/- Button Is Pressed. (In the settable vehicle speed range)
Diagnostic procedure
Test the ACC combination switch
.
Test the brake pedal position switch
.
Also check for
An open in the wire
A short in the wire
The system is in service mode.