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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 2.4L - DTC P0628 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Fuel Injector Circuit Diagnosis >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
NOTE:

Do Not perform this procedure unless directed here from the Fuel Injector Balance Test.

  1. Engine idling.
  2. Verify the scan tool Cylinder 1-4 Current Misfire Counter parameters do not increment.
    • If the Cylinder 1-4 Current Misfire Counters increment 

      Refer to Circuit/System Testing.

    • If the Cylinder 1-4 Current Misfire Counters do not increment 
  3. Verify the scan tool Cylinder 1-4 Injector Control Circuit Status parameters display OK.
    • If the Cylinder 1-4 Injector Control Circuit Status parameters do not display OK 

      Refer to Circuit/System Testing.

    • If the Cylinder 1-4 Injector Control Circuit Status parameters display OK 
  4. All OK.
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