Diagnostic Instructions
| • | 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. |
DTC Descriptor
DTC B1650 : Frontal Stage 1 Deployment CommandedCircuit/System Description
When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform turn-on test to diagnose critical malfunctions within the SDM itself.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
The history of the 1st stage air bag inflation or the belt pretensioner explosion is in the SDM.
Action Taken When the DTC Sets
The SDM commands ON the AIR BAG warning lamp.
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
Reference Information
Electrical Information Reference
Circuit/System Testing
- Ignition ON, use the scan tool to request SIR DTCs. Verify that DTC B1650 is set as current.
- Ignition ON, use the scan tool to clear the DTCs.
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
• The I/P module • The SDM module • The I/P wiring harness connector • The SDM wiring harness connector
| ⇒ | If DTC B1650 was current replace the SDM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for SDM replacement, setup, and programming
