GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The steering column control module recognizes the malfunction of the circuit via an internal evaluation logic.

DTC Descriptor

DTC B2961: Switch Position Ignition Key Circuit Malfunction

Conditions for Running the DTCs

    • Voltage supplied to the module is in the normal operating voltage range.
    • The vehicle power mode requires serial data communication to occur.

Conditions for Setting the DTC

The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Conditions for Clearing the DTC

    • A current DTC clears when the malfunction is no longer present.
    • A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Reference Information

Schematic Reference

    •  Power Distribution Schematics
    •  Power Moding Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Power Mode Description and Operation

Electrical Information Reference

    •  Power Distribution Schematics
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool References

Refer to Component Connector End Views for scan tool information.

Circuit/System Verification

  1. Verify DTC P0606 is not set as current.
  2. If DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
  3. Verify DTC U2961 is not set .
  4. If DTC is set, replace the SCCM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SCCM replacement, setup, and programming