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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Corvette 🢒 Restraints 🢒 SIR 🢒 DTC B1001

Circuit Description

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) compares the restraints ID that is stored in the SDM to the restraints ID that is stored in the body control module (BCM). The restraints ID that is being compared contains the last four digits of the SDM part number. Also, the VIN that is stored in the SDM is compared to the VIN that is stored in the powertrain control module (PCM). For more detailed information concerning the Class 2 data lines, refer to Data Link Communications Description and Operation in Data Link Communications.

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC

The restraints ID that is stored in the SDM does not match the restraints ID that is stored in the BCM and/or the VIN that is stored in the SDM does not match the VIN that is stored in the PCM.

Action Taken When the DTC Sets
    • The SDM commands the AIR BAG warning lamp ON via Class 2 serial data.
    • The SDM disables all deployments.

Conditions for Clearing the DTC

The restraints ID that is stored in the SDM matches the restraints ID that is stored in the BCM and/or the VIN that is stored in the SDM matches the VIN that is stored in the PCM.

Diagnostic Aids

DTC B1001 is an indication that the restraints ID's stored in both the BCM and SDM and/or the VIN information stored in the PCM and the SDM do not match. If either the BCM and/or powertrain control module (PCM) were replaced, the replacement modules need to be reprogrammed for proper operation.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This step checks to see if the correct VIN is programmed in the PCM.

    2.

  2. This step checks to see if the BCM has been replaced.

DTC B1001 Option Configuration Error

Step

Action

Yes

No

1

Was the Diagnostic System Check-SIR performed?

Go to Step 2

Go to Diagnostic System Check - SIR

2

  1. Install a scan tool.
  2. With a scan tool, verify that the PCM is programmed with the correct VIN by comparing the VIN that is stored in the PCM to the VIN plate of the vehicle.

Is the PCM programmed with the correct VIN?

Go to Step 4

Go to Step 3

3

Use a scan tool and/or the techline machine to program the correct VIN into the PCM.

Did you complete the programming procedure?

Go to Step 6

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4

Was the BCM replaced?

Go to Body Control Module (BCM) Programming/RPO Configuration in Body Control System

Go to Step 5

5
  1. Turn OFF the ignition.
  2. Replace the inflatable restraint sensing and diagnostic module (SDM). Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .

Did you complete the replacement?

Go to Step 6

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6
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

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