Diagnostic Instructions
DTC Descriptor
DTC B0053: Deployment Commanded with Loop DTCs Present
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) contains sensing devices that converts vehicle velocity changes to electrical signals. The SDM processes the generated electrical signals and compares them to values stored in memory. When the
generated signals exceed the stored values, the SDM performs additional signal processing and compares the generated signals to signals stored in memory. When 2 of the generated signals exceed the stored values, the SDM will cause current to flow through the
inflator modules, deploying the inflator modules. DTC B0053 will set along with DTC B0051 when a deployment occurs while a circuit malfunction is present in any one of the deployment loops.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
| • | The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules when a current SIR DTC is set. |
| • | The SDM detects a side impact of sufficient force to warrant deployment of a side impact module when a current SIR DTC is set. |
Action Taken When the DTC Sets
| • | The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator. |
| • | The SDM records crash data. |
Conditions for Clearing the DTC
DTC B0053 is a latched code. You cannot clear a latched code. Replace the SDM after following the instructions.
Diagnostic Aids
DTC B0053 will be accompanied by another DTC, other than DTC B1000 and DTC B0051. Repair the malfunction causing the other DTCs before installing a new SDM.
Reference Information
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
With a scan tool, verify DTC B0053 is not set.
| ⇒ | If DTC is set, replace the SDM. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
