B0053
CIRCUIT DESCRIPTIONThe SDM contains a sensing device that converts vehicle velocity changes to an electrical signal. The electrical signal is generated by the SDM and compared to a value stored in memory. When the generated signals exceed the stored values, the SDM deploys the air bags and stores a DTC in its memory. If a deployment occurs while an inflator circuit fault is present this DTC will be set.
DTC PARAMETERS:
DTC B0053 sets when the SDM commands the inflator modules to deploy air bags with a loop fault present. The following conditions must be met to set this DTC.
^ Ignition voltage is present at the SDM and continuous.
^ An inflator loop fault was previously detected.
^ The SDM detects a frontal or side crash.
^ Crash was of sufficient force to warrant deployment of air bags.
ACTION TAKEN:
^ DTC B0053 will set.
^ The air bag telltale will be On.
^ DTC is latched in SDM memory.
DIAGNOSTIC AIDS:
^ Always start diagnosis of SIR DTCs with an inspection of vehicle, including its wiring and SIR components for visible damage.
IMPORTANT: DTC B0053 is a latched code and can not be cleared from SDM memory.
^ Always replace SDMs with DTC B0053 set, only after all collision repairs have been completed.
^ Always perform the "SIR Diagnostic System Check" before using this chart. Initial Inspection and Diagnostic Overview
TEST DESCRIPTION
