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Home >> Mazda >> 1989 >> 626 Base >> Repair and Diagnosis >> Engine Performance >> System >> System/Component Tests - 4-CYL >> Ignition System >> Knock Control >> Knock Control System (MX-6 Turbo & 626 Turbo)
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Knock Control System (MX-6 Turbo & 626 Turbo)

  1. Connect Self-Diagnostic Checker (49 H018 9A1) and ground test connector lead. Turn ignition on.
  2. Tap lightly on right engine hanger. Ensure monitor lamp on checker flashes. If not, connect a good knock sensor and recheck.
  3. If test results remain the same, replace knock control unit.
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