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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (3 Of 5)) >> Diagnostic Information and Procedures >> DTC P062D >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following component/system: KR75 Engine Controls Ignition Relay
    • Go to next step: If a related DTC is not set 
  3. Engine - Cranking - For 10 s

    Verify the function: Engine = Running

    • If the function does not work 

      Refer to: Circuit/System Testing

    • Go to next step: If the function works 
  4. Verify a condition does not exist with the component: Engine - The engine should not stumble/stall.

    Perform the action while monitoring the component:

    • Wiggle the harness and connector: K20 Engine Control Module
    • Wiggle the harness and connector: X50A Fuse Block - Underhood
    • If a condition exists 

      Repair as necessary - Wiring/Terminal(s)/Electrical Connector(s)

    • Go to next step: If no condition exists 
  5. 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.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  6. All OK.