Tuesday, December 3, 2019

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1960

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1960



DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316



are Type B DTCs.



Conditions for Clearing the DTC



DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316



are Type B DTCs.



Diagnostic Aids



* Inspect the ignition coils for aftermarket devices. An aftermarket device connected to the ignition coil circuits, may cause this DTC to set.



* If the condition is intermittent, moving the related harnesses and connectors, with the engine operating, while monitoring the appropriate scan



tool Misfire Current Cylinder, or the IC Circuit Test Status parameter may help to isolate the condition. An IC Circuit Test Status parameter



will change from OK or Not Run to Fault if a condition is present.



Reference Information



Schematic Reference



Engine Controls Schematics (LLT) (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)



Description and Operation



Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic



Ignition System Description)



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)



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



1. Operate the engine for 30 seconds. Observe the DTC information with a scan tool. DTC P0351, P0352, P0353, P0354, P0355, P0356, P2300,



P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 should not set.



2. Engine operating, observe the scan tool IC Circuit Test Status parameters, the IC Circuit Test Status parameters should display OK or Not



Run.



3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the



conditions that you observed from the Freeze Frame/Failure Records data.



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.



Note: The ignition circuit supplies voltage to other components. Make sure you test all circuits for a short to ground or test all components



for being shorted that share the ignition circuit.



2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.



瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal and the



ignition circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as necessary.



3. Crank or start the engine. Test for 200-400 mV between the appropriate IC circuit terminal C and ground.



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



replace the K20 ECM.



瀚慖f greater than the specified range, test the circuit for a short to voltage. If the circuit/connection tests normal, replace the K20 ECM.

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