Multiplex Communication System: Flowchart

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Use the following flowchart to verify the cause of the trouble.

Fig 1: Multiplex Communication Systems Diagnostic Flowchart (1 Of 2)
Courtesy of MAZDA MOTORS CORP.

Fig 2: Multiplex Communication Systems Diagnostic Flowchart (2 Of 2)

Courtesy of MAZDA MOTORS CORP.