2010 Cadillac CTS Sedan AWD V6-3.6L Page 1004

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1004

- Any motors

* Inspect the hydro-carbon (HC) absorber, if equipped, in the air cleaner assembly for ruptures that would leak charcoal into the air intake,

contaminating the sensing element.

* Inspect for any contamination, water intrusion, or debris on the sensing elements of the MAF sensor. If debris is present, clean the sensor. If

the sensor cannot be cleaned, replace the sensor.

* A high resistance may cause a driveability concern before this DTC sets.

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)

Description and Operation

Air Intake System Description (w/LLT) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation/Air Intake

System Description)Air Intake System Description (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and

Operation/Air Intake System Description)

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)

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 P0685, P0689, P0690 or B1380 are not set.

瀚慖f any of the DTCs are set, refer to Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code

Descriptions/Powertrain Diagnostic Trouble Code (DTC) Type Definitions).

2. Engine idling for 1 min, observe the DTC information with a scan tool. DTCs P0100, P0102 and P0103 should not set.

3. 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. Verify that DTCs P0685, P0689, P0690 or B1380 are not set.

瀚慖f any of the DTCs are set, refer to Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code

Descriptions/Powertrain Diagnostic Trouble Code (DTC) Type Definitions).

2. Ignition OFF, disconnect the harness connector at the B75B MAF/IAT sensor.

3. Ignition OFF, test for less than 5 ohm between the ground circuit terminal C and the battery ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

Caution: Do NOT use the low reference circuit in the component harness connector for this test. Damage to the control module may occur

due to excessive current draw.

4. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal B and ground.

瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and

the ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.