Saturday, October 30, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 1467

2010 Cadillac Truck SRX FWD V6-3.0L Page 1467



Circuit/System Description



The ignition system on this engine uses an individual coil/module for each cylinder. The engine control module (ECM) controls the spark event for



each cylinder through the eight individual ignition control circuits. When the ECM commands the ignition control circuit ON, electrical current will



flow through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM will command the



ignition control circuit OFF, interrupting current flow through the primary winding. The magnetic field created by the primary winding will



collapse across the secondary coil windings, producing a high voltage across the spark plug electrodes. The ECM uses information from the



crankshaft position sensor, and the camshaft position sensor for sequencing and timing of the spark events.



Conditions for Running the DTC



* The engine is running.



* The ignition voltage is greater than 6 V.



* DTC P0351-P0356 runs continuously when the above conditions are met.



Conditions for Setting the DTC



The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.



Action Taken When the DTC Sets



DTCs P0351-P0356 are Type B DTCs.



Conditions for Clearing the MIL/DTC



DTCs P0351-P0356 are Type B DTCs.



Diagnostic Aids



A high resistance condition on any ignition control circuit can cause an engine misfire without setting DTC P0351-P0356.



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



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/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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