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Home >> Cadillac >> 2015 >> SRX Base, 4D Utility >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls/Fuel - 3.6L (LFX) - DTC P0442 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P163A: Control Module Fuel Pressure Regulator 1 >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify the parameters listed below display OK or Not Run when commanding the Fuel Pressure Regulator ON and OFF with a scan tool.
    • Fuel Pressure Regulator Control Circuit High Voltage Test Status
    • Fuel Pressure Regulator Control Circuit Open Test Status
    • Fuel Pressure Regulator Control Circuit Low Voltage Test Status
    • Fuel Pressure Regulator High Control Circuit High Voltage Test Status
    • Fuel Pressure Regulator High Control Circuit Open Test Status
    • Fuel Pressure Regulator High Control Circuit Low Voltage Test Status
    • If OK or Not Run is not displayed 

      Refer to Circuit/System Testing.

    • If OK or Not Run is displayed 
  3. 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.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  5. All OK.
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