1991 LEXUS SC400 Service Repair Manual

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Page 3089 of 4087

LEXUS SC400 1991 Service Repair Manual WIRING DIAGRAM DIAGNOSTIC CHARTDIAGNOSTIC CHART ± SUPPLEMENTAL RESTRAINT SYSTEM TROUBLESHOOTINGRS±111 WhereEverybodyKnowsYourName

Page 3090 of 4087

LEXUS SC400 1991 Service Repair Manual OKNG INSPECTION PROCEDURE 1Preparation. P1. Disconnect battery negative (±) terminal cable, andwait at least 90 seconds. 2. Remove steering wheel pad (See page RS±19). 3. Disconnect connectors o

Page 3091 of 4087

LEXUS SC400 1991 Service Repair Manual OKNG OKNG 3Check center airbag sensor assembly. C OK Hint P1. Connect negative (±) terminal cable to battery. 2. Clear malfunction code stored in memory. (Seepage RS±63 ). 1. Turn ignition switch

Page 3092 of 4087

LEXUS SC400 1991 Service Repair Manual OKNG OKNG 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. 5Check P circuit. C OK P1. Discon

Page 3093 of 4087

LEXUS SC400 1991 Service Repair Manual DTC54Open in P Squib Circuit CIRCUIT DESCRIPTION The squib circuit consists of the center airbag sensor assembly and front p\ assenger airbag assembly. It causes the SRS to deploy when the SRS deploy

Page 3094 of 4087

LEXUS SC400 1991 Service Repair Manual WIRING DIAGRAM DIAGNOSTIC CHARTDIAGNOSTIC CHART RS±116± SUPPLEMENTAL RESTRAINT SYSTEM TROUBLESHOOTING WhereEverybodyKnowsYourName

Page 3095 of 4087

LEXUS SC400 1991 Service Repair Manual OKNG 1Preparation. P1. Disconnect battery negative (±) terminal cable, andwait at least 90 seconds. 2. Remove steering wheel pad (See page RS±19). 3. Disconnect connectors of front passenger airb

Page 3096 of 4087

LEXUS SC400 1991 Service Repair Manual OKNG OKNG 3Check center airbag sensor assembly. C OK Hint P1. Connect connector to center airbag sensor connec- tor. 2. Connect connector between center airbag sensor assembly and wiring harness co
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