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Fan Control Module Inspection [AJ]

  1. Remove the two bolts from the fan control module with the connectors still connected.
  2. Start and warm up the engine.
  3. Monitor the engine coolant temperature with the WDS or equivalent.
  4. Measure the voltage at the terminal B of fan control module connector (2 terminals) as shown in the table.
    • If there is any malfunction, replace the fan control module.
      Fig 1: Identifying Fan Control Module Connector Terminals
      G04324684Courtesy of MAZDA MOTORS CORP.
      ENGINE COOLANT TEMPERATURE SPECIFICATION

      Inspection Result
      Condition A/C Engine coolant temp.
      IG SW ON OFF 95 °C {203 °F} or less Fan stops
      IG SW ON (Idling) OFF 95 °C {203 °F} or less Fan stops
      IG SW ON (Idling) ON(1) 95 °C {203 °F} or less 6.9V-12.1V
      IG SW ON (Idling) OFF 100 °C {212 °F} or more 0.6V-14.6V
      (1) When the magnetic clutch and the middle pressure SW are on.
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