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 4 digits of the SDM part number. The SDM receives this message and compares it to the information stored in memory, this DTC is set when the SDM receives a restraints ID over the class 2 communication circuit from the BCM that is different from the ID that is stored in the SDM memory.
This diagnostic procedure supports the following DTC:
DTC B1001 SDM Option Configuration Error
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 initialization. |
• | The SDM commands ON the AIR BAG warning lamp via class 2 serial data. |
• | The SDM disables all deployments. |
The restraints ID that is stored in the SDM matches the restraints ID that is stored in the BCM.
This DTC is an indication that an incorrect SDM is installed in the vehicle, or that the SDM and/or the BCM was replace without reprogramming the BCM with the new information.
The numbers below refer to the step numbers on the diagnostic table.
This step verifies that the correct VIN is programmed in the BCM.
This step verifies that the BCM has been replaced.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: SIR Schematics Connector End View Reference: SIR Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
Is the BCM 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 BCM. Did you complete the programming procedure? | Go to Step 6 | -- |
Was the BCM replaced? | Go to Body Control Module (BCM) Programming/RPO Configuration in Computer/Integrating Systems | Go to Step 5 | |
5 | Using the scan tool, perform the BCM reprogramming procedure. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the reprogramming procedure? | Go to Step 6 | -- |
6 |
Does the scan tool indicate that this DTC is current? | Go to Step 7 | Go to Step 8 |
7 |
Did you complete the replacement? | Go to Step 8 | -- |
8 |
Does the DTC reset? | Go to Step 2 | System OK |