GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The steering column lock control module (SCLCM) controls the steering column lock motor. The SCLCM monitors the voltage on the lock motor control circuits. If the voltage on a control circuit is not the same as what the SCLCM is commanding, DTC B2907 will set.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B2897 Steering Column Lock Solenoid/Motor Lock Circuit

DTC Symptom

DTC Symptom Descriptor

02

Short to Ground

05

Short to Voltage

Conditions for Running the DTC

    • DTCs B1327 or B1328 are not set as current.
    • The condition must be present for 300 ms.

Conditions for Setting the DTC

This DTC will set if the SCLCM lock relay circuit has an open, short to ground, or short to voltage.

Action Taken When the DTC Sets

    • Stores a DTC B2897 in the SCLCM memory.
    • The SCLCM will command the Service Column Lock Now to turn ON in the driver information center (DIC).

Conditions for Clearing the MIL/DTC

    • The SCLCM no longer detects a malfunction in the SCLCM lock relay circuit.
    • A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.

Step

Action

Values

Yes

No

Schematic Reference: Column Lock Schematics

Connector End View Reference: Steering Wheel and Column Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Test the steering column lock motor circuits for an open, short to ground, or short to voltage. Refer to Circuit Testing .

Did you find the condition?

--

Go to Step 4

Go to Step 3

3

Inspect for poor connections at the harness connector of the steering column lock control module (SCLCM). Refer to Testing for Intermittent Conditions and Poor Connections .

Did you find the condition?

--

Go to Step 6

Go to Step 5

4

Replace the steering wheel theft deterrent lock. Refer to Steering Wheel and Column Component Views .

Did you complete the replacement?

--

Go to Step 6

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5

Important: Perform the setup procedure for the SCLCM.

Replace and setup the SCLCM. Refer to Steering Column Lock Control Module Programming and Setup .

Did you complete the replacement?

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Go to Step 6

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6

  1. Clear the DTCs with a scan tool.
  2. Operate the vehicle within the Conditions for Running the DTC.

Does DTC B2897 reset?

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Go to Step 2

System OK