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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 493 (Symptom Troubleshooting [Engine Control System BP, BP With TC)) >> Engine Control System Operation Inspection >> Idle Air Control (IAC) Inspection >> Engine coolant temperature compensation inspection

Engine coolant temperature compensation inspection

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the WDS or equivalent to DLC-2.
  2. Select following PIDs.
    • ECT
    • RPM
  3. Verify that the engine is in cold condition, then start the engine.
  4. Verify that the engine speed decreases as the engine warms up.
    • If the engine speed does not decrease or decreases slowly, carry out the following:
      • ECT sensor inspection
      • IAC valve inspection
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