• | 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. |
When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform turn-on test to diagnose critical malfunctions within SDM itself.
The SDM continuously receives vehicle speed signal from the Instrument Panel Cluster (IPC). If driver seat belt is unbelted, the SDM gives the such alerts as warning lamp and sound according to vehicle status.
Ignition voltage is within the normal operating voltage range.
The SDM can not receive vehicle speed signal from the IPC.
The SDM commands the air bag indicator ON.
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
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 SDM module • The SDM wiring harness connector
⇒ | If resistance is not as specified, test circuit for an open or high resistance. |
⇒ | If resistance is not as specified, test circuit for a short to ground. |
⇒ | If circuit tests normal, replace the IPC. |
⇒ | Use the scan tool in order to clear the DTCs, if DTC B1453 sets again, replace the SDM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for SDM or IPC replacement, setup, and programming