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| • | Perform the Diagnostic System Check - Vehicle prior to using the diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The inflatable restraint sensing and diagnostic module (SDM) contains a sensing device that converts vehicle velocity changes into an electrical signal. The SDM compares this electrical signal 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 values stored in memory. When two of the generated signals exceed the stored values, the SDM will cause current to flow through the deployment loops, deploying the side air bags causing DTC B0055 to set.
Ignition voltage is between 9-16 volts.
SDM commands the deployment with loop faults present.
The SDM commands the AIR BAG indicator ON via serial data communications.
DTC B0055 is a latched code. The code cannot be cleared with the scan tool. Replacement of the SDM is required.
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected. • SDM • SDM wiring harness
Verify that DTC B0055 is not set.
| ⇒ | If DTC is set as current, clear codes, if DTC resets, replace the SDM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for SDM replacement, setup, and programming
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