2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1279

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)