TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.092

BAT/Brakes, ABS & TRAC Systems — Inspection Procedure., page 93

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p.094
Inspection Procedure. — MK4 Supra Brakes, ABS & TRAC Systems, page 93
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Page text (OCR transcript)
BR–93
BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS)

INSPECTION PROCEDURE.

1  Check battery positive voltage.

OK  Voltage: 10 — 14 V

OK                    NG  Check and repair the charging system.

2  Check voltage between terminals IG1 and GND of ABS (& TRAC) ECU connector.

w/o TRAC
ON

IG1  GND

BE6653
R06982

w/ TRAC
ON

IG1

GND

BE8853
R05827

P  Remove ABS (& TRAC) ECU with connectors still connected.

C  1. Turn ignition switch ON.
2. Measure voltage between terminals IG1 and GND of ABS (& TRAC) ECU connector.

OK  Voltage: 10 — 14 V

NG                    OK  Check and replace ABS (& TRAC) ECU.