Air Bag

Light Emitting Diode (LED) is controlled by Supplemental Inflatable Restraint (SIR) Sensing Diagnostic Module (SDM) on Class 2 serial data line. As a check, LED flashes 7 times after ignition is turned on. LED illuminates when one or more of the following conditions exists:

• SIR system related DTC is set.
• Instrument cluster cannot communicate with SDM on Class 2 serial data line.
• Instrument cluster receives a Class 2 serial data message from SDM requesting AIR BAG indicator on.