B1051

Circuit Description
The Inflatable Restraint Sensing and Diagnostic Module (SDM) contains a sensing device that converts vehicle velocity changes to an electrical signal. The SDM processes the generated electrical signal and compares it to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional signal processing and compares the generated signals to the signals stored in memory. When two of the generated signals exceed the stored values, the SDM will cause current to flow through the indicator modules, deploying the air bags and causing DTC B1051 to be set.

Conditions for Setting the DTC
The SDM detects a frontal crash, up to 30 degrees off the centerline on the vehicle, of sufficient force to warrant deployment of the air bags.

Action Taken When the DTC Sets
^ The SDM detects a diagnostic trouble code.
^ The SDM turns ON the AIR BAG warning lamp.
^ The SDM records crash data.

Conditions for Clearing the DTC
DTC B1051 is a latched code. You cannot clear a latched code. Replace the SDM after following the instructions in the diagnostic table.

Test Description
Numbers below refer to step numbers on the diagnostic table:
2. If the inflator module has not deployed, DTC B1051 may be set falsely.
3. If DTC B1051 has set with no signs of frontal impact, the diagnostic trouble code has set falsely.