Wednesday, January 15, 2020

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1487

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1487



P0522



* The ECM detects that the EOP sensor signal circuit is less than 0.2 volt.



* The above condition is present for greater than 10 seconds.



P0523



* The ECM detects that the EOP sensor signal circuit is greater than 4.8 volts.



* The above condition is present for greater than 10 seconds.



Action Taken When the DTC Sets



* The ECM records the operating conditions at the time the diagnostics test fails. The ECM displays this information in the Failure Records on



the scan tool.



* The EOP gauge defaults to zero.



* The IPC illuminates the EOP indicator.



Conditions for Clearing the DTC



* The DTC becomes history when the conditions for setting the DTC are no longer present.



* The history DTC clears after 40 malfunction-free warm-up cycles.



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)



Description and Operation



* Indicator/Warning Message Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Description and



Operation/Indicator/Warning Message)



* Instrument Cluster Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Description and



Operation/Instrument Cluster)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)



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



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



Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information



Circuit/System Verification



1. Engine running, observe the scan tool Engine Oil Pressure Sensor parameter. The reading should be between 0.2-4.8 volts.



2. Verify the engine oil pressure, refer to:



* Oil Pressure Diagnosis and Testing (See: Engine, Cooling and Exhaust/Engine/Testing and Inspection/Component Tests and General



Diagnostics/Oil Pressure Diagnosis and Testing)for the 3.6L engine



* Oil Pressure Diagnosis and Testing (See: Engine, Cooling and Exhaust/Engine/Testing and Inspection/Component Tests and General



Diagnostics/Oil Pressure Diagnosis and Testing)for the 4.8L, 5.3L, 6.0L, 6.2L or 7.0L engine



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the engine oil pressure (EOP) sensor.



2. Ignition OFF, test for less than 1.0 ohm between the low reference circuit terminal C and ground.



瀚慖f greater than the specified range, test the circuit for an open/high resistance. If the circuit tests normal, replace the ECM.



3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal B and ground.



瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

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