TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.072
BAT/Brakes, ABS & TRAC Systems73 / 167
p.074
INSPECTION PROCEDURE (w/o TRAC) — MK4 Supra Brakes, ABS & TRAC Systems, page 73
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BR–73 BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS) INSPECTION PROCEDURE (w/o TRAC) 1 Check voltage between terminal (A8) 1 of ABS motor relay connector and body ground. LOCK P Disconnect the ABS motor relay connector. C Measure voltage between terminal (A8) 1 of ABS motor relay connector and body ground. OK Voltage: 10 — 14 V BE6853 ROC890 OK NG Check and repair harness or connector. 2 Check continuity between terminal (A8) 2 of ABS motor relay connector and terminal (A19) 6 of ABS ECU. P Disconnect the connectors from the ABS actuator. C Check continuity between terminal (A8) 2 of ABS motor relay connector and terminal (A19) 6 of ABS ECU. OK Continuity Hint There is a resistance of 4 ~ 6 between terminals (A6) 3 and (A7) 5 of ABS actuator. ABS Motor Relay A8 A6 A6 ABS Actuator A7 A7 A19 ECU R07078 OK NG Repair or replace harness or ABS actuator.