2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 667

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 667

- Security System Controller In Learn Mode

Circuit/System Description

When learning a coded key, the theft deterrent module (TDM) is placed in learn mode. DTC B3031 will set automatically as an indicator that the

system is in learn mode and not as a fault indicator. Once the coded key is learned, learn mode will be exited and the DTC cleared. If the TDM does

not exit learn mode, B3031 will remain current and indicate a fault.

Conditions for Running the DTC

The immobilizer system is the learn coded keys state.

Conditions for Setting the DTC

DTC B3031 will set any time the TDM enters the learn coded keys state.

Action Taken When the DTC Sets

The security indicator will illuminate.

Conditions for Clearing the DTC

* A current DTC B3031 will be cleared upon the successful exit of learn mode.

* A history DTC will be cleared after 100 malfunction-free ignition cycles or when a scan tool is used to clear DTCs.

Reference Information

Schematic Reference

Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer

Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and

Operation/Immobilizer Description and Operation)

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)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Important: When performing the 10-Minute Vehicle Key Relearn Procedure, all keys not learned at that time will be erased and not be

recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure should

all keys not be present at the time of repair.

1. Verify DTC B3055 is not set.

瀚慖f the DTC is set, refer to DTC B3055 (See: B Code Charts/B3055).

2. Verify the scan tool TDM Learn Coded Key parameter displays Yes.

瀚慖f not the specified value, perform the 10 Minute Vehicle Key Relearn procedure. Refer to Replacing Keys (North America except

Canada) (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Service and Repair/Replacing Keys (North America

Except Canada)).

3. Perform the 10 Minute Vehicle Key Relearn procedure. Refer to Replacing Keys (North America except Canada) (See: Accessories and

Optional Equipment/Antitheft and Alarm Systems/Service and Repair/Replacing Keys (North America Except Canada)). The TDM should