TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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BAT/Brakes, ABS & TRAC Systems — Inspection Procedure., page 101

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p.102
Inspection Procedure. — MK4 Supra Brakes, ABS & TRAC Systems, page 101
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Page text (OCR transcript)
BR–101
BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS)

INSPECTION PROCEDURE.

1 Check TRAC pump motor.

P Disconnect TRAC pump motor connector.

C Check continuity between each terminal of TRAC pump motor shown below.

OK Terminals 1 and 3    Continuity (Reference value 100   or less)
   Terminals 2 and 3    Continuity (Reference value 4 ~ 6   or less)

R07339

OK                    NG  Replace TRAC pump motor.

2 Check continuity between terminal 1 of TRAC pump motor connector and body ground.

C Measure resistance between terminal 1 of TRAC pump motor connector and body ground.

OK Resistance: 1   or less

R07340

OK                    NG  Repair or replace harness or connector.

3 Check for open and short in harness and connector between TRAC pump motor and ECU (See page IN–30).

OK                    NG  Repair or replace harness or connector.

Check and replace ABS & TRAC ECU.