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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 510 (Engine Controls And Fuel - 3.6L (LLT) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P050D: Cold Start Rough Idle >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Circuit/System Testing requires cold start. Do not start vehicle prior to connecting scan tool and preparing to evaluate the condition during engine crank.

  1. Start the engine and observe the scan tool Cylinder 1-6 Current Misfire Counters during the first 500 engine cycles.
  2. Verify the scan tool Cylinder 1-6 Current Misfire Counters should not be incrementing.
    • If the misfire counters are incrementing on one or more cylinders 
    1. Ignition OFF.
    2. Verify that the following conditions do not exist:
      • If a condition exist, repair as necessary.
      • If none of the conditions exist, replace the Q17 Fuel Injectors as indicated by high misfire counts.
    • If the misfire counters are not incrementing 
  3. All OK.
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