2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1761

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1761

* DTC P0068 is a type A DTC.

* DTC P1101 is a type B DTC.

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)

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

Circuit/System Testing

1. Verify none of the following conditions exist:

* The air intake duct system for loose clamps, cracks, or other damage

* The air intake duct system for being collapsed or restricted

* The B75 mass airflow sensor is installed correctly.

* Restricted air filter

* Q38 throttle body for dirt, debris, and coking. Also, throttle body blade or shaft damage. Refer to Throttle Body Inspection and Cleaning

(See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and Repair/Procedures) for further diagnosis.

* Splits, kinks, or improper connections at the vacuum hoses

* Missing, restricted, or leaking exhaust components-Refer to Symptoms - Engine Exhaust (See: Engine, Cooling and Exhaust/Exhaust

System/Testing and Inspection/Symptoms - Engine Exhaust).

* Vacuum leaks at the intake manifold and Q38 throttle body.

瀚慖f a condition exists, repair as necessary.

2. Ignition ON, observe the diagnostic trouble code (DTC) information with a scan tool. Verify that DTC P0641, P0651, P0697, or P06A3 is

not set.

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

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for DTC P0641, P0651, P0697, or P06A3 diagnosis.

3. Determine the current vehicle testing altitude. Compare the MAP Sensor pressure parameter to the reading in the Altitude Versus Barometric

Pressure (See: Powertrain Management/Computers and Control Systems/Specifications/Altitude Versus Barometric Pressure) table. The

MAP sensor pressure parameter should be within the specified range indicated in the table.

瀚慖f the MAP sensor pressure is not within the range specified for your altitude, refer to Diagnostic Trouble Code (DTC) List - Vehicle (

See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for DTC P0106.

4. Engine idling, observe the MAP Sensor kPa parameter. The reading should be between 26-52 kPa (3.8-7.5 psi).

瀚慖f not within the specified range, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for DTC P0106.

5. Use the scan tool snapshot function to take a snapshot of the engine data list while performing the actions listed below.

1. Engine idling

2. Increase the engine speed slowly to 3,000 RPM and then back to idle.