TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.099
BE/Body Electrical System100 / 121
p.101
BODY ELECTRICAL SYSTEM — Theft Deterrent System — MK2 Supra Body Electrical System, page 100
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BE-100 BODY ELECTRICAL SYSTEM — Theft Deterrent System Diode (For RH Key Unlock Switch and Horn) INSPECTION OF DIODE INSPECT DIODE CONTINUITY (a) Connect the test leads of the ohmmeter to terminals 1 and 2, and check for continuity. Next, reverse the test leads and check, again, for continuity. If both of the test results are same condition, replace the diode. (b) Connect the test leads of the ohmmeter to terminals 2 and 3, and check for continuity. Next, reverse the test leads and check, again, for continuity. If both of the test results are same condition, replace the diode. Headlight Control Relay (See page BE-14) Taillight Control Relay (See page BE-14) Key Unlock Switch (See page BE-67) Theft Deterrent Horn INSPECTION OF THEFT DETERRENT HORN INSPECT HORN OPERATION Connect the positive (+) lead from the battery to terminal 1. Connect the negative (—) lead to terminal 2. Check that the horn blows. If operation is not as specified, replace the horn. Door Lock Solenoid (See page BE-68)