Defective insulation stripping

WARNING: This page is about a different car, the 2013 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

= Proper crimp
= Insulation not removed
= Wire strands missing
= Intermittent signals through pierced insulation

Fig 1: Identifying Defective Insulation Stripping
Courtesy of FORD MOTOR CO.