TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System77 / 116
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Inspection of vacuum circuit (7M-GTE only). — MK3 Supra Body Electrical System, page 77
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K Inspection of vacuum circuit (7M-GTE only). Turn ignition switch off. VACUUM HOSE Are there cracks or other damage on the vacuum hose? No Yes Replace vacuum hose. VACUUM SWITCH No INSPECT VACUUM SWITCH CIRCUIT Disconnect connector from vacuum switch. Is there continuity between terminal 1 of vacuum switch and body ground? No • Vacuum switch improperly installed. • Body ground faulty. Yes INSPECT VACUUM SWITCH OPERATION Is vacuum switch normal? (See page BE-84) No Replace vacuum switch. Yes VACUUM PUMP INSPECT GROUND CONNECTION Disconnect connector from vacuum pump. Is there continuity between terminal 2 of wire harness side connector and body ground? No • Open circuit in wire harness between terminal 2 and body ground. • Body ground faulty. Yes INSPECT VACUUM PUMP OPERATION Is vacuum pump operation normal? (See page BE-84) No Replace vacuum pump. Yes Connect connector to vacuum switch and pump. CONTINUED ON NEXT PAGE