TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System90 / 116
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INSPECTION OF FRONT DOOR KEY LOCK AND UNLOCK SWITCH CIRCUIT. — MK3 Supra Body Electrical System, page 90
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BE-90 BODY ELECTRICAL SYSTEM — Theft Deterrent System C INSPECTION OF FRONT DOOR KEY LOCK AND UNLOCK SWITCH CIRCUIT. Turn ignition switch off. COMPUTER Disconnect computer connector and inspect connector on wire harness side as follows. LH FRONT DOOR INSPECT KEY LOCK SWITCH CIRCUIT Is there continuity between terminal 11 and ground with LH front door locked with key? No Open circuit in LH front door key lock switch circuit. Yes Is there continuity between terminal 11 and ground with LH front door unlocked with key? Yes Short circuit in LH front door key lock switch circuit. No INSPECT KEY UNLOCK SWITCH CIRCUIT Is there continuity between terminal 3 and ground with LH front door unlocked with key? No Open circuit in LH front door key unlock switch circuit. Yes Is there continuity between terminal 3 and ground with LH front door locked with key? Yes Short circuit in LH front door key unlock switch circuit. RH FRONT DOOR No INSPECT KEY LOCK SWITCH CIRCUIT Is there continuity between terminal 11 and ground with RH front door locked with key? No Open circuit in RH front door key lock switch circuit. Yes Is there continuity between terminal 11 and ground with RH front door unlocked with key? Yes Short circuit in RH front door key lock switch circuit. No INSPECT KEY UNLOCK SWITCH CIRCUIT Is there continuity between terminal 3 and ground with RH front door unlocked with key? No Open circuit in RH front door key unlock switch circuit. Yes Is there continuity between terminal 3 and ground with RH front door locked with key? Yes Short circuit in RH front door key unlock switch circuit. No Replace computer. Then recheck system.