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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0351 - P26C8) And Symptoms) >> Diagnostic Information And Procedures >> Malfunction Indicator Lamp (MIL) Diagnosis >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. Command the Malfunction Indicator Lamp On and Off with a scan tool.
    • If the MIL does not turn ON and OFF 

      Refer to Circuit/System Testing.

    • Go to next step: If the MIL turns ON and OFF 
  3. All OK.