2010 Cadillac Truck SRX FWD V6-3.0L Page 1383

2010 Cadillac Truck SRX FWD V6-3.0L Page 1383

DTCs P0234 and P0299 are Type B DTCs.

Diagnostic Aids

Use a solution of dish soap and water in a spray bottle to pinpoint any air leaks.

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

Turbocharger 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

Special Tools

J 24460-01 - Cooling System Pressure Tester

For equivalent regional tools, refer to Special Tools (See: Powertrain Management/Computers and Control Systems/Tools and Equipment).

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0033, P0034, P0035, P0236, P0237, P0238, P0244, P0245, or

P0246 is not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for further diagnosis.

2. Verify the exhaust system is not restricted. Refer to Restricted Exhaust (See: Engine, Cooling and Exhaust/Exhaust System/Testing and

Inspection/Restricted Exhaust).

3. If DTC P0299 is set, verify the proper operation of the turbocharger bypass solenoid valve. Refer to Turbocharger Cleaning and Inspection (

).

4. Engine running, command the Turbocharger Bypass Solenoid Valve between Inactive and Active with a scan tool while observing the

following control circuit status parameters:

* Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status

* Turbocharger Bypass Solenoid Valve Control Circuit Open Test Status

* Turbocharger Bypass Solenoid Valve Control Circuit Low Voltage Test Status

The parameters should alternate between OK and Not Run with each change in command.

5. Engine running, command the Turbocharger Wastegate Solenoid Valve to 20% with a scan tool while observing the following control circuit

status parameters:

* Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status

* Turbocharger Wastegate Solenoid Valve Control Circuit Open Test Status

* Turbocharger Wastegate Solenoid Valve Control Circuit Low Voltage Test Status

Each parameter should display OK.