B1051

CAUTION: Be careful when you handle a Sensor & Diagnostic Module (SDM). Do not strike or jolt the SDM. Before applying power to SDM:
^ Remove any dirt, grease, etc. from the mounting surface.
^ Position the SDM horizontally on the mounting surface.
^ Point the arrow on the SDM toward the front of the vehicle.
^ Tighten all of the SDM fasteners and SDM bracket fasteners to the specified torque value.
Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.

CIRCUIT DESCRIPTION

The inflatable restraint sensing and diagnostic module contains a sensing device that converts vehicle velocity changes to an electrical signal. The inflatable restraint sensing and diagnostic module processes the generated electrical signal and compares it to a value stored in memory. When the generated signal exceeds the stored value, the inflatable restraint sensing and diagnostic module performs additional signal processing and compares the generated signals to signals stored in memory. When two of the generated signals exceed the stored values, the inflatable restraint sensing and diagnostic module will cause current to flow through the inflator modules, deploying the air bags and causing DTC B1051 to set.

CONDITIONS FOR SETTING THE DTC

The inflatable restraint sensing and diagnostic module detects a frontal crash, up to 30 degrees off the centerline of the vehicle, of sufficient force to warrant deployment of the air bags.

ACTION TAKEN WHEN THE DTC SETS

^ The inflatable restraint sensing and diagnostic module sets a diagnostic trouble code.
^ The inflatable restraint sensing and diagnostic module turns ON the AIR BAG warning lamp.
^ The inflatable restraint sensing and diagnostic module records crash data.

CONDITIONS FOR CLEARING THE DTC

DTC B1051 is a latched code. You cannot clear a latched code. Replace the inflatable restraint sensing and diagnostic module after following the instructions in the diagnostic table.

DTC TABLE TEST DESCRIPTION

Number(s) below refer to step number(s) on the diagnostic table.
2. If inflator module(s) has not deployed, DTC B1051 may have set falsely.
3. If DTC B1051 has set with no signs of frontal impact, the diagnostic trouble code has set falsely.