TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.195
BE/Body Electrical Systems196 / 203
p.197
INSPECTION PROCEDURE — MK4 Supra Body Electrical Systems, page 196
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BE–196 BODY ELECTRICAL SYSTEM – CRUISE CONTROL SYSTEM INSPECTION PROCEDURE 1 Check ECU–B fuse. Junction Block No.1 ECU-B Fuse N08643 P Remove ECU–B fuse from R/B No.2. C Check continuity of ECU–B fuse. OK Continuity OK NG Check for short in all the harness and components connected to the ECU–B fuse (See attached wiring diagram). 2 Check continuity between terminal BATT of ECU connector and body ground. LOCK BATT BE3842 NO8798 P Remove ECU with connectors still connected. C Measure voltage between terminal BATT of ECU connector and body ground. OK Voltage: 10 – 14 V NG OK Proceed to next circuit inspection shown on matrix chart (See page BE–170). Check and repair harness and connector between battery and ECU.