2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1279
* The engine is cranking or operating.
* The ECM has detected greater than 12 camshaft revolutions.
* The DTC P0335 and P0336 run continuously once the above conditions are met for greater than 5 seconds.
* The DTC P0338 runs once each engine revolution once the above conditions are met for greater than 2 seconds.
Conditions for Setting the DTC
P0335
* The ECM does not detect a signal from the crankshaft position sensor.
OR
* The ECM detects a crankshaft position signal with out reference pulse for greater than 3 revolutions, 6 revolutions for LLT.
* Either condition exists for greater than 1 second or a cumulative of 10 seconds.
P0336
* The ECM re-syncs the engine position 6 or more times during an ignition cycle.
* The ECM re-syncs the engine position 2,600 or more times during an ignition cycle, for LLT.
OR
* The ECM detects 28 or more interruptions in the engine speed signal during an ignition cycle.
* Either condition exists for greater than 1 second or a cumulative of 10 seconds.
P0338
* The ECM detects a difference of greater than 8 teeth between reference gap position pulses.
* The ECM detects a difference of greater than 250 teeth between reference gap position pulses, for LLT.
* The condition exists for greater than 1 second or a cumulative of 10 seconds.
Action Taken When the DTC Sets
DTCs P0335, P0336, and P0338 are Type A DTCs.
Conditions for Clearing the DTC
DTCs P0335, P0336, and P0338 are Type A DTCs.
Diagnostic Aids
The following conditions could also set the DTCs:
* Physical damage to the crankshaft position sensor or the reluctor wheel
* Excessive play or looseness of the crankshaft position sensor or the reluctor wheel
* Improper installation of the crankshaft position sensor or the reluctor wheel
* Foreign material passing between the crankshaft position sensor and the reluctor wheel
* Excessive air gap between the crankshaft position sensor and the reluctor wheel
* The ECM uses the camshaft position sensors to determine engine speed and position when there is a crankshaft position sensor condition.
* The engine will operate with a crankshaft position sensor condition only if the ECM has stored the learned reference position of the
camshafts in memory. With a crankshaft position sensor condition the engine will go into a limp home mode after a restart. The ECM then
calculates engine speed from one of the camshaft position sensors.
* An intermittent condition in the camshaft position sensor circuits can cause a crankshaft position DTC to set. Inspect the camshaft position
sensor, harness connections, and related wiring, if you suspect this condition.
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)
