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SRC-274 < DTC/CIRCUIT DIAGNOSIS > [FOR MEXICO] B1138, B1139, B1140, B1141, B1142, B1143 DIAGNOSIS SENSOR UNIT B1138, B1139, B1140, B1141, B1142, B1143 DIAGNOSIS SENSOR UNIT Description INFOID:0000000005513832 DTC B1138, B1139, B1140, B1141, B1142, B1143 DIAGNOSIS SENSOR UNIT Detects the whole SRS electrical system and displays the malfunction either by illuminating or blinking the air OPERATION It detects a shock that exceeds specified level and monitors such systems as the driver and passenger air STRUCTURE It contains the “G” sensors for both frontal and side collisions and spare battery function in case of main bat- INSTALLATION Air bag diagnosis sensor unit is installed under the center console with fixed bolts. DTC Logic INFOID:0000000005513833 DTC DETECTION LOGIC With CONSULT-III DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”) DTC CONFIRMATION PROCEDURE (With CONSULT-III) 1. INSPECTION START Turn ignition switch ON. >> GO TO 2. 2. CHECK SELF-DIAG RESULT Check the screen of CONSULT-III. Is malfunctioning part detected? YES >> Refer to SRC-275, "Diagnosis Procedure" NO >> INSPECTION END. DTC CONFIRMATION PROCEDURE (Without CONSULT-III) NOTE: 1. INSPECTION START Turn ignition switch ON. DTC No. Trouble diagnosis name DTC detecting condition Possible cause B1138 CONTROL UNIT Air bag diagnosis sensor unit is out of • Internal breakdown in air bag diag- nosis sensor unit • Mis-match between specification on vehicle and configuration in air bag |