2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1042

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1042

The engine control module (ECM) detects that the actual measured airflow from the MAF and throttle position sensors is not within range of the

calculated airflow that is derived from the system of models for greater than 2 s.

Action Taken When the DTC Sets

DTCs P0101 and P1101 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0101 and P1101 are Type B DTCs.

Diagnostic Aids

A steady or intermittent high resistance of 15 ohm or greater on the ignition voltage circuit will cause the MAF sensor signal to be increased by as

much as 60 g/s.

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

Special Tools

J 38522 Variable Signal Generator

Circuit/System Verification

1. Verify that DTCs P0641, P0651, P0685, P0689, P0690, P0697, P06A3, or B1380 are 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)

2. Verify that restrictions do not exist in the exhaust system. Refer to Restricted Exhaust (See: Engine, Cooling and Exhaust/Exhaust

System/Testing and Inspection/Restricted Exhaust).

3. Engine operating at idle, observe the scan tool MAF Sensor parameter. The reading should be between 2,000-3,800 Hz depending on the

ECT.

4. A wide open throttle (WOT) acceleration from a stop should cause the MAF Sensor parameter on the scan tool to increase rapidly. This

increase should be from 2-6 g/s at idle to greater than 180 g/s at the time of the 1-2 shift.

5. Use the scan tool and compare the MAF Sensor parameter to a known good vehicle, under various operating conditions.

6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed

from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Verify the integrity of the entire air induction system by inspecting for the following conditions:

* Any damaged components

* Loose or improper installation