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B1049, B1054 DRIVER AIRBAG MODULE SRC-49 < DTC/CIRCUIT DIAGNOSIS > C D E F G I J K L M A B SRC N O P B1049, B1054 DRIVER AIRBAG MODULE Description INFOID:0000000005241100 For driver air bag module, crash is judged by main “G” sensor output signal and safing algorithm in front direc- OPERATION In case of frontal collision whose acceleration exceeds the specified level, the ignition materials are ignited by STRUCTURE Driver air bag module mainly consists of air bag and inflator that inflates air bag. INSTALLATION Driver air bag module is installed on the center of steering wheel with fixed bolts. DTC Logic INFOID:0000000005241101 DTC CONFIRMATION PROCEDURE 1. CHECK SELF-DIAG RESULT With CONSULT-III 1. Turn ignition switch ON. 2. Perform “AIR BAG” Self Diagnostic Result. Without CONSULT-III 1. Turn ignition switch ON. 2. Check the air bag warning lamp status. Refer to SRC-16, "Air Bag Warning Lamp Diagnosis" . NOTE: Is malfunctioning part detected? YES >> Refer to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000005241102 WARNING: With CONSULT-III • Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3 minutes. (To discharge backup capacitor.) • Never use unspecified tester or other measuring device. 1. CHECK HARNESS CONNECTOR Check the harness connector. Is the inspection result normal? YES >> GO TO 2. NO >> Replace harness connector. 2. CHECK WIRING HARNESS Check the wiring harness externals. DTC No. Trouble diagnosis name DTC detecting condition Possible cause B1049 DRIVER AIRBAG MOD- Driver air bag module circuit is open • Disconnection of wiring harness and open • Malfunction in driver air bag module sor unit |