Troubleshooting Procedure

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Rear Body Control Module Troubleshooting Procedure Chart

Courtesy of MAZDA MOTORS CORP.

*1: (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [SKYACTIV-G 2.5T] .) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [SKYACTIV-G 2.5] .)

Action for Non-repeatable Malfunction

If the malfunction does not recur, verify the malfunction cause by performing the following actions:

Based on the repair order form, attempt to drive the vehicle or perform tests to replicate the malfunction, record the data at that time, and detect the malfunction cause.
Shake the wiring harness or connector of the electrical component which is suspected to be the cause of the malfunction, and inspect for occurrence of any malfunction or DTCs.

Fig 2: Shaking Wiring Harness Or Connector Of Electrical Component
Courtesy of MAZDA MOTORS CORP.
Inspect the female terminals on the connector of the electric component which is suspected to be the cause of the malfunction for poor connection. (See ELECTRICAL SYSTEM .)

NOTE:

Tool used (Reference): terminal test kit (49US-15-KIT)

Fig 3: Inspecting Female Terminals On Connector Of Electric Component

Courtesy of MAZDA MOTORS CORP.