TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.195

BE/Body Electrical Systems — Inspection Procedure, page 196

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p.197
Inspection Procedure — MK4 Supra Body Electrical Systems, page 196
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Page text (OCR transcript)
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.