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Home >> Cadillac >> 2021 >> CT5 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 3.0L (LGY) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P02EE-P02F3, P10A3-P10AE, P2B00-P2B05, P2B08-P2B0D, 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, P10AB, P10AC is set and no other DTCs are set
    • Replace the appropriate component: - Q17 Fuel Injector
    • Go to next step: If other DTCs are set - DTCs listed in the DTC Descriptor Category
  2. Ignition/Vehicle - Off
  3. Disconnect the appropriate component: Q17 Fuel Injector
    4. NOTE:

    The specified resistances are valid for components at room temperature.

  4. Test for 2.0 to 3.0 Ω between the test points: Control circuit terminal 2 & Ground circuit terminal 1
    • If not between 2.0 and 3.0 Ω 

      Replace the component: Q17 Fuel Injector

    • Go to next step: If between 2.0 and 3.0 Ω 
  5. Disconnect the electrical connector: X4 @ K20 Engine Control Module
  6. Test for less than 2 Ω between the test points: Control circuit terminal 1 @ Component harness &
    • { Q17A Fuel Injector 1 } Terminal 52 @ Control module harness
    • { Q17B Fuel Injector 2 } Terminal 51 @ Control module harness
    • { Q17C Fuel Injector 3 } Terminal 50 @ Control module harness
    • { Q17D Fuel Injector 4 } Terminal 49 @ Control module harness
    • { Q17E Fuel Injector 5 } Terminal 48 @ Control module harness
    • { Q17F Fuel Injector 6 } Terminal 47 @ Control module harness
    • If 2 Ω or greater - Repair the open/high resistance in the circuit. 
    • Go to next step: If less than 2 Ω 
  7. Test for less than 2 Ω between the test points: Control circuit terminal 2 @ Component harness &
    • { Q17A Fuel Injector 1 } Terminal 72 @ Control module harness
    • { Q17B Fuel Injector 2 } Terminal 71 @ Control module harness
    • { Q17C Fuel Injector 3 } Terminal 70 @ Control module harness
    • { Q17D Fuel Injector 4 } Terminal 69 @ Control module harness
    • { Q17E Fuel Injector 5 } Terminal 68 @ Control module harness
    • { Q17F Fuel Injector 6 } Terminal 67 @ Control module harness
    • If 2 Ω or greater - Repair the open/high resistance in the circuit. 
    • Go to next step: If less than 2 Ω 
  8. Replace the appropriate component: = Q17 Fuel Injector
  9. 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.
  10. 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 
  11. All OK.
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