TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System73 / 121
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BODY ELECTRICAL SYSTEM — Cruise Control System — MK2 Supra Body Electrical System, page 73
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BODY ELECTRICAL SYSTEM — Cruise Control System BE-73 CONTINUED FROM PREVIOUS PAGE Yes Is there continuity between terminal 30 and body ground with set/coast switch turned off? Yes Inspect control switch. No INSPECT ACCEL/RESUME SWITCH OPERATION Is there continuity between terminal 28 and body ground when accel/resume switch turned on? No Inspect the control switch. Yes STOP LIGHT S/W INSPECT RELEASE VALVE CIRCUIT Disconnect connector from computer. Is resistance value about 68 Ω between terminal 1 and terminal 2 of computer with brake pedal returned? No • Open or short circuit in wire harness between terminal 4 of stop light switch and terminal 3 of actuator. • Open circuit in wire harness between terminal 1 of actuator and terminal 2 of computer. • Inspect stop light switch. • Inspect actuator. Yes INSPECT STOP LIGHT SWITCH OPERATION Is there continuity between terminals 1 and 2 with brake pedal depressed? No Inspect stop light switch. Yes COMPUTER Disconnect computer and inspect connector on wire harness side as follows. INSPECT POWER SOURCE Is there battery voltage between terminal 7 and body ground with main switch turned on? No Open or short circuit in wire harness between terminal 7 of computer and terminal 3 of main switch. Yes INSPECT GROUND CONNECTION Is there continuity between terminal 10 and body ground? No • Open circuit in wire harness between terminal 10 and body ground. • Body ground faulty. Yes CONTINUED ON NEXT PAGE