PCM Cover Installation Note

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Insert the PCM cover end into area A shown in the figure.
Temporarily tighten the two bolts, then completely tighten them.

Fig 1: Identifying PCM Cover
Courtesy of MAZDA MOTORS CORP.