![]() ⇒ If the seat belt indicator is always OFF, replace the I/P cluster The seat belt indicator should turn ON and OFF when changing between the commanded states. Ignition ON, observe the function of the seat belt indicator while commanding the I/P lamps ON and OFF with a scan tool. Testing for Intermittent Conditions and Poor ConnectionsĬontrol Module References for scan tool information.Seat Belt System Description and Operation If the seat belt of an occupied seat is unfastened, the SDM will send a message to the IPC to illuminate the fasten safety belt indicator for 72 seconds or until the seat belt is fastened. The inflatable restraint sensing and diagnostic module (SDM) sends the status of the driver and passenger seat belt switch to the instrument panel cluster (IPC) via a serial data communication message. Diagnostic Procedure Instructions provides an overview of each diagnostic category.Review Strategy Based Diagnosis for an overview of the diagnostic approach.Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.Seat Belt Indicator Circuit Malfunction - Driver If it's the passenger side & no one is in that seat, that is often a problem with the passenger presence sensor in the passenger seat. But it's also possibly a harness/connector issue. Which indicator is on? Driver or passenger? If it's the driver side, generally replacing the buckle where the sensor is solves it. ![]()
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