Without adaptive front lighting system (AFS) and without memory power seat

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Possible cause

Connector terminal disconnection, poor contact, damage, deformation, corrosion
Open circuit in wiring harness between front body control module (FBCM) and connector C-04
Open circuit in wiring harness between connector C-04 and connectors C-54, C-55
Connectors C-54, C-55 malfunction
Connector C-04 malfunction
CAN circuit in front body control module (FBCM) malfunction

System wiring diagram

Fig 1: PCM System Diagram (H - Without Adaptive Front Lighting System)

Courtesy of MAZDA MOTORS CORP.

Inspection item

Front body control module (FBCM) connector
Connector C-04
Connectors C-54, C-55
Wiring harness between connector C-04 and connectors C-54, C-55
Wiring harness between front body control module (FBCM) terminal 2K and connector C-04
Wiring harness between front body control module (FBCM) terminal 2I and connector C-04
Front body control module (FBCM)

Between front body control module (FBCM) terminal 2P and front body control module (FBCM) terminal 2K
Between front body control module (FBCM) terminal 2N and front body control module (FBCM) terminal 2I