Monday, February 10, 2020

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1322

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1322



* The engine coolant temperature (ECT) is greater than -40掳C (-40掳F).



* The intake air temperature (IAT) is greater than -40掳C (-40掳F).



* The DTCs run continuously when the above conditions are met.



P0324, P0326 and P0331-Abnormal Noise Detection Mode-Improperly Bolted Knock Sensor



* Engine speed is between 2,200-8,500 RPM.



* The ECT is greater than -40掳C (-40掳F).



* The IAT is greater than -40掳C (-40掳F).



* The DTCs run continuously when the above conditions are met.



P0325, P0327, P0328, P0330, P0332, and P0333



* Engine speed is between 400-8,500 RPM.



* The ECT is greater than -40掳C (-40掳F).



* The IAT is greater than -40掳C (-40掳F).



* The DTCs run continuously when the above conditions are met.



P06B6 and P06B7



* Engine speed is between 400-4,000 RPM.



* The ECT is greater than -40掳C (-40掳F).



* The IAT is greater than -40掳C (-40掳F).



* The DTCs run continuously when the above conditions are met.



Conditions for Setting the DTC



P0324



The knock sensor signal indicates an excessive engine knock is present for greater than 10 s for at least 1 single cylinder.



P0325 and P0330



The knock sensor signal circuits are open for greater than 10 s.



P0326 and P0331



* The signal indicates the sensor harness is connected but the sensor is not properly bolted to the engine.



OR



* The knock sensor signal indicates an excessive engine knock is present in an entire bank.



* Either of the above conditions exist for greater than 10 s.



P0327 and P0332



The knock sensor signal circuits are shorted to ground for greater than 10 s.



P0328 and P0333



The knock sensor signal circuits are shorted to voltage for greater than 10 s.



P06B6 and P06B7



The ECM has detected an internal knock sensor processor fault.



Action Taken When the DTC Sets



* DTCs P0324, P0325, P0326, P0327, P0328, P0330, P0331, P0332 P0333, P06B6, and P06B7 are Type B DTCs.



* The ignition timing is retarded to reduce the potential of engine damaging spark knock.



Conditions for Clearing the DTC



DTCs P0324, P0325, P0326, P0327, P0328, P0330, P0331, P0332 P0333, P06B6, and P06B7 are Type B DTCs.



Diagnostic Aids



* Inspect the knock sensor for physical damage. A knock sensor that is dropped or damaged may cause a DTC to set.



* Inspect the knock sensor for proper installation. A knock sensor that is loose or over torqued may cause a DTC to set. The knock sensor



should be free of thread sealant.



* The knock sensor mounting surface should be free of burrs, casting flash, and foreign material.



Reference Information



Schematic Reference



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

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