TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System82 / 116
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BODY ELECTRICAL SYSTEM — Cruise Control System — MK3 Supra Body Electrical System, page 82
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BE-82 BODY ELECTRICAL SYSTEM — Cruise Control System INSPECT RELAY OPERATION (a) Connect the positive (+) lead from the battery to terminal 2 and the negative (—) leads to terminals 1 and 3. (b) Ground terminal 6 through the voltmeter. (c) Check that the voltmeter indicates no voltage. (d) Ground terminal 4 and check that the voltmeter indicates battery voltage. If operation is not as specified, replace the relay. Clutch Switch INSPECTION OF SWITCH INSPECT SWITCH CONTINUITY (a) Check that there is continuity between terminals with the switch free. (Clutch pedal depressed) (b) Check that there is no continuity between terminals with the switch pin pushed. (Clutch pedal released) If continuity is not as specified, replace the switch. Parking Brake Switch INSPECTION OF SWITCH INSPECT SWITCH CONTINUITY (a) Check that there is continuity between terminal and the switch set screw with the parking brake lever pulled up. (Switch free) (b) Check that there is no continuity between terminal and the switch set screw with the parking brake lever released. (Switch pin pushed) If continuity is not as specified, replace the switch. Neutral Start Switch INSPECTION OF SWITCH INSPECT SWITCH CONTINUITY Check that there is continuity between terminals 2 and 3 with switch position "P" and "N" ranges. If continuity is not as specified, replace the switch.