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B1186, B1187, B1188, B1189 DIAGNOSIS SENSOR UNIT SRC-141 < DTC/CIRCUIT DIAGNOSIS > C D E F G I J K L M A B SRC N O P B1186, B1187, B1188, B1189 DIAGNOSIS SENSOR UNIT Description INFOID:0000000005241238 Checks the entire SRS and displays the malfunction either by illuminating or blinking the air bag warning lamp OPERATION It detects a shock that exceeds a specified level and monitors whether the driver and passenger air bags, front 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:0000000005241239 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 SRC-119, "Diagnosis Procedure" . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000005241240 WARNING: • 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 connectors. 2. CHECK WIRING HARNESS Check the wiring harness externals. Is the inspection result normal? YES >> GO TO 3. DTC No. Trouble diagnosis name DTC detecting condition Possible cause B1186 CONTROL UNIT Air bag diagnosis sensor unit is mal- • Malfunction in air bag diagnosis sen- sor unit • Configuration in air bag diagnosis sensor unit does not match the vehi- |