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Central Processing Unit (CPU): 626

  1. Locate CPU behind left kick panel. For connectors "B", "C" and "D", using DVOM, leave CPU connectors attached to measure voltage at specified terminals (backprobe connectors). For connector "A", disconnect CPU from joint box and take measurements at CPU terminals. To check continuity, disconnect CPU connectors and measure at specified connector terminal. See Fig 1 -Fig 5 .
  2. If voltage measurements or continuity are not as specified, check related components and wiring harnesses. If related components and wiring harnesses are okay, but system is still not functioning properly, replace CPU. See CENTRAL PROCESSING UNIT (CPU)  under REMOVAL & INSTALLATION.
Fig 1: Identifying CPU Connector Terminals (626)
G00018618Courtesy of MAZDA MOTORS CORP.
Fig 2: Identifying Connector "A" Pin Voltages & Continuity (626)
G00018619Courtesy of MAZDA MOTORS CORP.
Fig 3: Identifying Connector "B" Pin Voltages & Continuity (626)
G00018620Courtesy of MAZDA MOTORS CORP.
Fig 4: Identifying Connector "C" Pin Voltages (626)
G00018621Courtesy of MAZDA MOTORS CORP.
Fig 5: Identifying Connector "D" Pin Voltages & Continuity (626)
G00018622Courtesy of MAZDA MOTORS CORP.
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