Test B: Air Bag Indicator Malfunction: Testing
- If supplemental inflatable restraint diagnostic system check was performed, go to next step. If supplemental inflatable restraint diagnostic system check was not performed, see SUPPLEMENTAL INFLATABLE RESTRAINT DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC SYSTEM CHECKS in BODY CONTROL MODULES - DEVILLE article.
- Connect scan tool and establish communication with inflatable restraint sensing and diagnostic module (SDM). Request the SIR data list display. Observe ignition voltage parameter in SIR data list. If scan tool indicates IGNITION VOLTAGE parameter in SIR data list is 9-16 volts, go to next step. If scan tool indicates IGNITION VOLTAGE parameter in SIR DATA is not 9-16 volts, see ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC SYSTEM CHECKS in BODY CONTROL MODULES - DEVILLE article.
- Select SPECIAL FUNCTIONS in INSTRUMENT PANEL CLUSTER on scan tool. Select WOW INSTRUMENT CLUSTER in OUTPUT CONTROL. In WOW mode turn instrument panel indicators off and on. If scan tool will command AIR BAG warning ON and OFF, go to next step. If scan tool does not command AIR BAG warning ON and OFF, go to step 5.
- Replace SDM. See SENSING & DIAGNOSTIC MODULE under REMOVAL & INSTALLATION in BODY CONTROL MODULES - DEVILLE article. After repairs perform SUPPLEMENTAL INFLATABLE RESTRAINT DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC SYSTEM CHECKS in BODY CONTROL MODULES - DEVILLE article.
- AIR BAG warning indicator is faulty. AIR BAG warning indicator is not a serviceable item. Replace Instrument Panel Cluster (IPC). See INSTRUMENT PANEL CLUSTER under REMOVAL & INSTALLATION. After repairs perform SUPPLEMENTAL INFLATABLE RESTRAINT DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC SYSTEM CHECKS in BODY CONTROL MODULES - DEVILLE article.