Wednesday, December 18, 2019

2010 Cadillac Truck Escalade AWD V8-6.2L Page 2141

* 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

Special Tools

J 35616-A/BT-8637 Connector Test Adapter Kit

Circuit/System Verification

1. Ignition OFF, inspect the engine wiring harness carrying the camshaft position sensor circuits for the following conditions:

* Close routing of aftermarket electrical equipment

* Close to solenoids, motors, and relays

锟斤拷If any of these are determined to be a possible source of electrical interference, correct any wire harness routing or component placement

conditions.

2. Engine idling, observe the scan tool Camshaft Position Active Counter parameter. Parameter should be incrementing.

3. Engine idling, observe the DTC information with a scan tool. DTC P0341 or P0366 should not set.

4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, inspect the camshaft position sensor for looseness and correct installation.

锟斤拷If the camshaft position sensor is loose, inspect the sensor and the O-ring for damage, and replace as necessary.

2. Inspect the engine for the following conditions:

* Engine oil for debris

* Camshaft reluctor wheel for damage

* The timing chain, timing chain tensioner, and sprockets for wear or damage

锟斤拷If debris is found in the engine oil, inspect the internal engine components to determine the cause. Repair or replace any worn or damaged

components.

Component Testing

Important: You must perform the Circuit/System Testing before proceeding with Component Testing.

1. Inspect the camshaft position sensor for correct installation. Remove the camshaft position sensor from the engine and inspect the sensor

O-ring for damage.

锟斤拷If the sensor is loose, incorrectly installed, or damaged, replace the camshaft position sensor.

2. Connect the camshaft position sensor harness connector to the camshaft position sensor.

3. Ignition ON, engine OFF, observe the Camshaft Position Active Counter parameter on the scan tool.

4. Pass a flat steel object across the tip of the sensor repeatedly. The Camshaft Position Active Counter parameter should increment with each

pass of the steel object.

锟斤拷If the parameter does not increment, replace the camshaft position sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.