If a motor circuit is open, ABS will be disabled and the antilock telltale lamp will be turned On.

Code 63 sets if:

Right front motor circuit is shorted to B+.

This code can set at all times except when a previous failure has disabled ABS operation.

When attempting to diagnose an intermittent problem, use the Scan tool to review supplemental diagnostic information. The supplemental data can be used to duplicate a problem.

Select Malf History from scan tool ABS menu.

Check the tightness of the female terminal grip with a spare male terminal.