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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P02EE-P02F1, P10A3-P10A9, P10AA, P2B00-P2B03, P2B08, P2B09, P2B0A, P2B0B, P2B95, P2B96, or P30D4 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. If DTC P10A3, P10A4, P10A5, P10A6, P10A7, P10A8, P10A9, P10AA is set and no other DTCs are set
    • Replace the appropriate component : - Q17 Fuel Injector
  2. If DTC P10A3, P10A4, P10A5, P10A6, P10A7, P10A8, P10A9, P10AA is set and other DTCs are set
    • Go to next step : Continue
  3. Ignition/Vehicle - Off
  4. Disconnect the appropriate component : Q17 Fuel Injector
  5. Test for 1.35 to 1.65 ohms between the test points : Control circuit terminal 2 & Ground circuit terminal 1 @ Q17 Fuel Injector @ Temperature20°C (68°F).
    • If not between 1.35 and 1.65 ohms 

      Replace the component : Q17 Fuel Injector

    • Go to next step : If between 1.35 and 1.65 ohms 
  6. Disconnect the electrical connector : X3 @ K20 Engine Control Module
  7. Test for less than 2 ohms between the test points : Control circuit terminal 1 @ Component harness &
    • {Q17A Fuel Injector 1}Terminal 52 @ Control module harness
    • {Q17B Fuel Injector 2}Terminal 49 @ Control module harness
    • {Q17C Fuel Injector 3}Terminal 51 @ Control module harness
    • {Q17D Fuel Injector 4}Terminal 50 @ Control module harness
    • If 2 ohms or greater - Repair the open/high resistance in the circuit. 
    • Go to next step : If less than 2 ohms 
  8. Test for less than 2 ohms between the test points : Control circuit terminal 2 @ Component harness &
    • {Q17A Fuel Injector 1}Terminal 72 @ Control module harness
    • {Q17B Fuel Injector 2}Terminal 69 @ Control module harness
    • {Q17C Fuel Injector 3}Terminal 71 @ Control module harness
    • {Q17D Fuel Injector 4}Terminal 70 @ Control module harness
    • If 2 ohms or greater - Repair the open/high resistance in the circuit. 
    • Go to next step : If less than 2 ohms 
  9. Replace the appropriate component : = Q17 Fuel Injector - Monitor the scan tool parameter : Misfire Data
  10. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  11. Verify the DTC does not set.
    • If the DTC sets 

      Replace the component : K20 Engine Control Module

    • Go to next step : If no DTC is set 
  12. All OK.
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