2010 Cadillac CTS Sedan AWD V6-3.6L Page 1001
* The ignition is ON, or the engine is operating.
* The ignition voltage is greater than 10.5 V.
* DTC P0100, P0102 and P0103 run continuously once the above conditions are met for 200 mS.
Conditions for Setting the DTC
P0100
The ECM detects that the MAF sensor signal is 0.0 Hz.
P0102
The ECM detects that the MAF sensor signal is less than 1433 Hz.
P0103
The ECM detects that the MAF sensor signal is greater than 12,346 Hz.
Action Taken When the DTC Sets
DTCs P0100, P0102, and P0103 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0100, P0102, and P0103 are Type B DTCs.
Diagnostic Aids
* Inspect the harness of the B75B MAF/IAT sensor to verify that it is not routed too close to the following components:
- The secondary ignition wires or coils
- Any solenoids
- Any relays
- 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
