2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1745

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1745

speeds and loads. A small quantity of air entering the engine indicates a deceleration or idle condition. A large quantity of air entering the engine

indicates an acceleration or high load condition.

The ECM applies 5 V to the MAF sensor on the MAF sensor signal circuit. The sensor uses the voltage to produce a frequency based on the inlet

air flow through the sensor bore. The frequency varies within a range of near 2,000 Hertz at idle to near 9,700 Hertz at maximum engine load.

Conditions for Running the DTC

* The engine is running for more than 1 s.

* The engine speed is at least 300 RPM.

* The ignition signal is greater than 9 V.

* The above conditions are met for greater than 1 s.

* These DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

P0102

The ECM detects that the MAF Sensor parameter is less than 1,500 Hz or 1.2 g/s for greater than 5 s.

P0103

The ECM detects that the MAF Sensor parameter is more than 14,500 Hz or 332 g/s for greater than 5 s.

Action Taken When the DTC Sets

DTCs P0102 and P0103 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0102 and P0103 are Type B DTCs.

Diagnostic Aids

* Verify the integrity of the air induction system by inspecting for the following conditions:

- Any water intrusion in the induction system

- Any contamination or debris on the sensing elements of the MAF sensor

- Damaged components

* Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories (See:

Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Checking Aftermarket

Accessories).

Reference Information

Schematic Reference

Engine Controls Schematics (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/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