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Home >> Mazda >> 2005 >> MX-5 Miata LS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission [Shift Mechanism] >> Key Interlock Unit Inspection

Key Interlock Unit Inspection

  1. Remove the front side trim.
  2. Turn the ignition switch to ON, and inspect terminal voltages, referring to the chart below.
    • If not as specified, repair the wiring harness and/or key interlock unit.
      Fig 1: Identifying Key Interlock Harness Side Connector
      G03638450Courtesy of MAZDA MOTORS CORP.
      TERMINAL REFERENCE

      Terminal (-) terminal connected to Condition Correct measurement value (V)
      A G For less than 2 seconds after ignition switch is turned to ACC or on with P position switch on. Approx.0
      Except above conditions B+
      C G P position switch is on, and ignition switch is turned to ACC or ON. Approx.0
      Except above condition B+
      G Ground Under any condition Approx.0
      K G P position switch is on. Approx.0
      P position switch is off. B+
      0 G Ignition switch is at ON. B+
      Ignition switch is off. Approx.0
      P G Ignition switch is at ACC. B+
      Ignition switch is at position other than ACC. Approx.0
  3. Install the front side trim.
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