2010 Cadillac CTS Sedan AWD V6-3.6L Page 971

2010 Cadillac CTS Sedan AWD V6-3.6L Page 971

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P0068

- Throttle Body Airflow Performance

DTC P1101

- Intake Air Flow System Performance

Circuit/System Description

The engine control module (ECM) compares actual airflow based on throttle position (TP) to a calculated airflow based on manifold absolute

pressure (MAP) sensor, and mass air flow (MAF).

Conditions for Running the DTC

DTC P0068

* The engine speed is greater than 800 RPM.

* The ignition voltage is greater than 6.0 V.

* The throttle actuator control system is not in reduced power mode.

* The DTC runs continuously when the above conditions are met.

DTC P1101

* DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0335, P0336 are not set

* The engine speed is between 400-7,000 RPM

* The engine coolant temperature (ECT) is between 69-127掳C (156-260掳F).

* The intake air temperature (IAT) is between -20 to +125掳C (-4 to +257掳F).

* The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the actual airflow rate is greater than the calculated airflow.

Action Taken When the DTC Sets

* DTC P0068 is a type A DTC.

* DTC P1101 is a type B DTC.

Conditions for Clearing the DTC

* DTC P0068 is a type A DTC.

* DTC P1101 is a type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (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)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)