2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1408
The engine is running
Conditions for Setting the DTC
P0521
* The engine oil pressure is out of its working range.
* The ECM does not detect a change in the engine oil pressure.
* The above condition is present over a predetermined variance of engine speed.
P0522
* The ECM detects a short to ground in the engine oil pressure signal circuit.
* The above condition is present for greater than 10 seconds.
P0523
* The ECM detects a short to voltage or an open circuit in the engine oil pressure signal circuit.
* The above condition is present for greater than 10 seconds.
Action Taken When the DTC Sets
The instrument cluster illuminates the service vehicle soon indicator.
Conditions for Clearing the DTC
The DTC becomes history when the conditions for setting the DTC are no longer present.
Reference Information
Schematic Reference
Instrument Cluster Schematics (See: Diagrams/Electrical Diagrams/Instrument Panel, Gauges and Warning Indicators/System Diagram/Instrument
Cluster Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
* Instrument Cluster Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Description and
Operation/Instrument Cluster)
* Indicator/Warning Message Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Description and
Operation/Indicator/Warning Message)
* Driver Information Center (DIC) Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Description and
Operation/Driver Information Center (DIC))
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Engine running, observe the scan tool Engine Oil Pressure Sensor parameter. The reading should be between 0.3-4.8 V.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the B37B Engine Oil Pressure Sensor.
2. Ignition OFF, test for less than 10 ohm between the low reference circuit terminal 1 and ground.
