2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2013

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2013

* DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, or P0333 are not set.

* The engine speed is at least 400 RPM.

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

* The engine run time is at least 2 s.

* The power take-off (PTO) is not active.

* DTCs P0325 and P0330 run continuously when the above conditions are met.

P0326

* DTC P0068, P0606, P1516, P2101, P2135, or P2176 are not set.

* The engine speed is at least 400 RPM.

* The MAP is at least 10 kPa.

* DTC P0324 runs continuously when the above conditions are met.

P0327, P0328, P0332, and P0333

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

* The engine run time is at least 2 s.

* DTCs P0327, P0328, P0332, and P0333 run continuously when the above conditions are met.

Conditions for Setting the DTC

P0324

The ECM has detected an internal circuitry fault for 5 s.

P0325 and P0330

The KS signal circuits are open or shorted together for 5 s.

P0326

* The KS signal indicates an engine knock is present.

* The ECM has commanded the spark retard to a value, which is more than the calibrated value, for a specific engine load and speed.

* The above conditions exist for more than 5 s.

P0326

* The KS signal indicates an engine knock is present.

* The ECM has commanded the spark retard to a value, which is more than the calibrated value, for a specific engine load and speed.

* The above conditions exist for more than 5 s.

P0327, P0328, P0332, and P0333

* The KS signal circuits are shorted to voltage or ground.

* The above conditions exist for more than 5 s.

Action Taken When the DTC Sets

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

* 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, P0332, and P0333 are Type B codes.

Diagnostic Aids

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

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

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

* The KS must be clear of hoses, brackets, and engine electrical wiring.

Reference Information

Schematic Reference

Engine Controls Schematics (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