B3077

DTC B3077

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview)provides an overview of each diagnostic category.



DTC Descriptor
DTC B3077 00
- Wrong Transponder Type Detected




Circuit/System Description

When an remote key is inserted into the ignition lock cylinder and the ignition is turned ON, the transponder embedded in the remote key is energized by the exciter coils located in the theft deterrent module (TDM) surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the TDM. The TDM is directly secured to the steering column module (CIM). The CIM compares this unique value to a value stored in memory. If the value is correct, the CIM will request vehicle starting.


Conditions for Running the DTC

Ignition ON


Conditions for Setting the DTC

The TDM determines the transponder is not a correct transponder type


Action Taken When the DTC Sets

* Vehicle starting is disabled
* The Service Vehicle Soon indicator will flash and/or the Safeguard Check message is displayed on the driver information center (DIC)



Conditions for Clearing the DTC

* A current DTC will be cleared when the TDM detects a valid transponder from the remote key.
* A history DTC will clear after 100 malfunction free ignition cycles.



Reference Information
Schematic Reference

Immobilizer Schematics (Immobilizer Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Immobilizer Description and Operation (Immobilizer Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning)for scan tool information


Circuit/System Verification

1. Inspect that all available remote keys are correct remote keys for the vehicle.

• If any remote keys are incorrect for the vehicle, replace the remote key.

2. Attempt to start the vehicle with each of the available remote keys. DTC B3077 should not set.

• If only one remote key causes DTC B3077 to set, replace the appropriate remote key.
• If all remote keys cause DTC B3077 to set, replace the CIM.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Replacing Keys (Service and Repair)
* Control Module References (Programming and Relearning)for CIM replacement, programming, and setup