Sunday, May 15, 2022

2010 Cadillac Truck SRX FWD V6-3.0L Page 1257

2010 Cadillac Truck SRX FWD V6-3.0L Page 1257



Diagnostic Fault Information



Circuit/System Description



The fuel rail fuel pressure sensor detects fuel pressure within the fuel rail. The engine control module (ECM) provides a 5 V reference voltage on



the 5 V reference circuit and ground on the reference ground circuit. The ECM receives a varying signal voltage on the signal circuit. The ECM



monitors the voltage on the fuel rail fuel pressure sensor circuits. When the fuel pressure is high, the signal voltage is high. When the fuel pressure



is low, the signal voltage is low.



Conditions for Running the DTC



* The engine is running.



* The ignition voltage is between 11-18 V.



* The DTCs run continuously within the enabling conditions.



Conditions for Setting the DTC



P0192



The ECM detects that the fuel rail fuel pressure sensor signal voltage is low.



P0193



The ECM detects that the fuel rail fuel pressure sensor signal voltage is high.



Action Taken When the DTC Sets



* DTCs P0192 and P0193 are Type A DTCs.



* A message center or an indicator may display Reduced Engine Power.



Conditions for Clearing the DTC



DTCs P0192 and P0193 are Type A DTCs.



Reference Information



Schematic Reference



Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics



(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)



Description and Operation



Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation/Fuel System



Description)Fuel System Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and



Operation/Fuel System Description)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit



Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)

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