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SUPPLEMENTAL RESTRAINT SYSTEM(SRS) 8B-21 AIR BAG CONTROL UNIT(AC4) Removal & Installation Procedure AC4 is installed on the center portion of the front floor tunnel. Notice Do not disassemble the AC4 to repair. If defective, replace it. Replace the AC4 with new after air bag inflation. 1. Disconnect the negative battery cable and wait for 30 seconds before starting service. Notice Though battery cable is disconnected, air bag control unit 2. Remove the console box and center fascia panel assembly. 3. Remove the heater control switch and audio assembly. 4. Remove the lower side panel of the driver’s portion and glove box. 5. Remove the lower main panel. 6. Release the lock lever of the AC4 connector and disconnect the connector. 7. Unscrew 3 nuts and remove the AC4. Notice For installation, horizontal position should be secured for 8. Installation should follow the removal procedure in the reverse order. Inspection Procedure 1. Check AC4 case and welt bolts for crack or deformation. 2. Check connector, lock lever and terminal for deformation. Notice Replace the AC4 with new if dust, deformation or corrosion |