TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
p.043
AB/SRS Airbag44 / 90
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DIAGNOSTIC CHART — MK3 Supra SRS Airbag, page 44
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DIAGNOSTIC CHART 1 Preparation. 2 Check front airbag sensor circuit. (Measure resistance between terminals +SR and -SR, +SL and -SL of center airbag sensor assembly connector.) NG → Go to Code 15 (See page AB-60). OK ↓ 3 Check front airbag sensor circuit. (Measure voltage between terminal +SR or +SL of center airbag sensor assembly connector and body ground.) NG → Repair or replace harness or connector between center airbag sensor assembly and front airbag sensor (See page AB-21). OK ↓ 4 Check squib circuit. NG → Go to step 7. OK ↓ 5 Check center airbag sensor assembly. NG → Replace center airbag sensor assembly. OK ↓ 6 Check squib. NG → Replace steering wheel pad. OK ↓ From the results of the above inspection, the malfunctioning part can now be considered normal. To make sure of this, use the simulation method to check. 7 Check spiral cable. NG → Repair or replace spiral cable. OK ↓ Repair or replace harness or connector between center airbag sensor assembly and spiral cable. WIRING DIAGRAM Center Airbag Sensor Assembly Power Source Safing Sensor Steering Wheel Pad Squib Spiral Cable D+ D- Front Airbag Sensor LH +SL -SL Front Airbag Sensor RH +SR -SR AB0106