2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2028

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2028

flux changes between the peaks and valleys of a 58-tooth reluctor wheel on the crankshaft. Each tooth on the reluctor wheel is spaced at 60-tooth

spacing, with 2 missing teeth for the reference gap. The crankshaft position sensor produces an ON/OFF DC voltage of varying frequency, with 58

output pulses per crankshaft revolution. The frequency of the crankshaft position sensor output depends on the velocity of the crankshaft. The

crankshaft position sensor sends a digital signal, which represents an image of the crankshaft reluctor wheel, to the ECM as each tooth on the wheel

rotates past the crankshaft position sensor. The ECM uses each crankshaft position signal pulse to determine crankshaft speed and decodes the

crankshaft reluctor wheel reference gap to identify crankshaft position. This information is then used to sequence the ignition timing and fuel

injection events for the engine. The ECM also uses crankshaft position sensor output information to determine the crankshaft relative position to the

camshaft, to detect cylinder misfire, and to control the camshaft position actuator if equipped.

Conditions for Running the DTC

* DTC P0101, P0102, P0103, P0641, or P0651 is not set.

* The engine is cranking or running.

* The airflow into the engine is greater than 3 g/s.

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

Conditions for Setting the DTC

Note: The ECM detects engine movement by sensing the airflow through the MAF sensor, when airflow is greater than 3 grams per second, or by

sensing camshaft position sensor pulses.

* The ECM detects that the starter is commanded on and the engine has been cranking for more than 4 s without a crankshaft position sensor

pulse.

* The ECM detects that the engine is running, but has not received a crankshaft position sensor pulse for 2 of 10 engine cycles.

Action Taken When the DTC Sets

* DTC P0335 is a Type A DTC.

* The camshaft position actuator if equipped is commanded to the parked position.

* The ignition system defaults to a limp home mode. The camshaft position sensor is used to determine engine position.

Conditions for Clearing the DTC

DTC P0335 is a Type A DTC.

Diagnostic Aids

* With this DTC set, the engine may crank for an extended period of time during start-up.

* This test procedure requires that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test (See:

Starting and Charging/Testing and Inspection/Component Tests and General Diagnostics/Battery Inspection/Test).

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

* 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)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information