Circuit Inspection Diag. Code (Normal) Source Voltage Drop CIRCUIT DESCRIPTION In case the battery voltage drops, the voltage increase circuit (DC-DC converter) in the center airbag sensor assembly in case the source voltage drops. When the battery voltage drops, the voltage-increase circuit (DC-DC converter) functions to increase the voltage of the airbag system to normal voltage. The diagnosis system malfunction display for this circuit is different to other circuits — when the airbag warning light remains lit up and the diagnostic code is a normal code, source voltage drop is indicated. Malfunction in this circuit is not recorded in the center airbag sensor assembly, and approx. 10 seconds after the source voltage returns to normal, the airbag warning light automatically goes off. Code No. (Normal) Source voltage drop. Diagnosis DIAGNOSTIC CHART 1 Preparation. 2 Does airbag warning light turn off after approx. 10 seconds. No → Check diagnostic code, and if a malfunction code is output, perform troubleshooting according to malfunction code. If a normal code is output, replace center airbag sensor assembly. Yes ↓ Check battery and charging system (See page CH-1). WIRING DIAGRAM Ignition SW AM1 AM2 CIG ECU-IG IGN ACC IG₁ IG₂ Center Airbag Sensor Assembly Fusible Link Box AM1 AM2 Battery ABD243