GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Corvette 🢒 Restraints 🢒 SIR 🢒 DTC B1001 Option Configuration Error

Circuit Description

When the ignition key is first turned to the RUN position, 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 BCM. The restraints ID that is being compared contains the last four digits of the SDM part number. For more detailed information concerning the Class 2 data lines, refer to Data Link Communications Description in Data Link Communications.

Conditions for Setting the DTC
    • Ignition 1 voltage is within the normal operating voltage range.
    • The restraints ID that is stored in the SDM does not match the restraints ID that is stored in the BCM.

This test is only run once during power up initialization.

Action Taken When the DTC Sets
    • The SDM sets a DTC B1001.
    • The SDM commands ON the AIR BAG warning lamp 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.

Diagnostic Aids

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

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. This step checks to see if the correct VIN is programmed in the powertrain control module (PCM).

    2.

  2. This step checks to see if the body control module (BCM) has been replaced.

DTC B1001 Option Configuration Error

Step

Action

Value(s)

Yes

No

1

Was the SIR Diagnostic System Check performed?

--

Go to Step 2

Go to SIR Diagnostic System Check

2

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

Is the programming procedure complete?

--

Go to Step 6

--

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 the ignition switch to the OFF position.
  2. Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .

Is the repair complete?

--

Go to Step 6

--

6
  1. Using the scan tool, clear all the SIR DTCs.
  2. Turn the ignition switch to the OFF position for 10 seconds.
  3. Make sure that all components and connectors are properly mounted.

Are all the SIR components properly mounted and connected?

--

Go to SIR Diagnostic System Check

--