4WD Control Unit

Remove "B" pillar trim panel behind driver's seat, and locate control unit and connector. Turn ignition on. Measure pin voltages at control unit connector. See Figure and Figure . If voltage is not as specified, check system wiring circuits. If wiring circuits are okay, replace faulty component or control unit with a known good unit.

Fig 1: Checking 4WD Control Unit Pin Voltages (1 Of 2)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Checking 4WD Control Unit Pin Voltages (2 Of 2)

Courtesy of MAZDA MOTORS CORP.