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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0351 - P26C8) And Symptoms) >> Diagnostic Information And Procedures >> DTC P163A: Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance >> 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 that no other DTCs are set.
    • Go to next step: If no other DTCs are set 
  3. Verify that DTC P163A is not set.
    • If the DTC is set 

      Refer to Circuit/System Testing.

    • Go to next step: If the DTC is not set 
  4. Operate the vehicle within the Conditions for Running the DTC. It may be helpful to operate the vehicle within the conditions identified from the Freeze Frame/Failure Records data.
  5. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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