B1019

DTC B1019

CIRCUIT DESCRIPTION
The inflatable restraint sensing and diagnostic module (SDM) runs continuous diagnostic tests on the system. When the ignition is turned on, the SDM will check to see if the correct components are installed for the vehicle configuration. If the SDM detects that there are too few or too many components on the system, DTC B1019 will set. If the SDM has been replaced, make sure that the correct part number was installed for this vehicle.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:

DTC B1019 System Configuration Error




This vehicle has DTCs that include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

CONDITIONS FOR RUNNING THE DTC
Ignition voltage is within the normal operating voltage range.

CONDITIONS FOR SETTING THE DTC
- The SDM was programmed with the wrong options for the vehicle.
- The wrong SDM was installed for the content of the vehicle.

ACTION TAKEN WHEN THE DTC SETS
- The SDM commands ON the AIR BAG warning lamp via GMLAN serial data.
- The SDM disables all deployments.

CONDITIONS FOR CLEARING THE MIL/DTC
The correct SDM must be installed.

The correct components must be installed.

DIAGNOSTIC AIDS
This DTC is an indication that an incorrect SDM is installed in the vehicle.

TEST DESCRIPTION

Steps 1-2:

Steps 3-8:

The following numbers refer to the step numbers in the diagnostic table:
2. This test checks for current inflatable restraint SDM DTCs.
3. This test checks to see if the correct vehicle information numbers (VIN) is programmed in the body control module (BCM).
4. This step explains that the BCM must be programmed.
6. This test checks to see if after clearing the DTCs, if this DTC is current then its possible that the wrong SDM has been installed.