TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System66 / 116
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BODY ELECTRICAL SYSTEM — Cruise Control System — MK3 Supra Body Electrical System, page 66
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CONTINUED FROM PREVIOUS PAGE INSPECT POWER SOURCE Is there battery voltage between terminal *5 or **1 and body ground? No → Open circuit in wire harness between terminal *5 or **1 of main switch and terminal 4 of main relay. Yes ↓ INSPECT SWITCH OPERATION Is main switch operation normal? (See page BE-81) No → Replace main switch. Yes ↓ COMPUTER Disconnect connector from computer and inspect connector on wire harness side as follows. ↓ INSPECT GROUND CONNECTION Is there continuity between terminal 13 and body ground? No → • Open circuit in wire harness between terminal 13 and body ground. • Body ground faulty. Yes ↓ INSPECT POWER SOURCE Is there battery voltage between terminal 10 and body ground with main switch turned on? No → Open circuit in wire harness between terminal 10 of computer and terminal 6 of main switch. Yes ↓ Replace computer. *: U.S.A. (w/ Airbag system) **: CANADA (w/o Airbag system)