TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.107
BAT/Brakes, ABS & TRAC Systems108 / 167
p.109
INSPECTION PROCEDURE (w/o TRAC) — MK4 Supra Brakes, ABS & TRAC Systems, page 108
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BR–108 BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS) INSPECTION PROCEDURE (w/o TRAC) Perform troubleshooting in accordance with the chart below for each trouble symptom. ABS warning light does not light up | Go to step [1] ABS warning light remains on | Go to step [3] 1 Check ABS warning light. See Combination Meter Troubleshooting on page BE–43. OK NG Replace bulb or combination meter assembly. 2 Check ABS solenoid relay. Continuity A8 A9 Continuity Open Continuity A8 A9 Open A9 4 5 R00889 R00895 R00940 P Disconnect the connectors from solenoid relay. C Check continuity between each terminal of ABS solenoid relay shown below. OK Terminals (A9) 1 and (A8) 3 | Continuity (Reference value 80 ) Terminals (A9) 5 and (A9) 6 | Continuity Terminals (A9) 2 and (A9) 5 | Open C (1) Apply battery positive voltage between terminals (A9) 1 and (A8) 3. (2) Check continuity between each terminal of ABS solenoid relay shown below. OK Terminals (A9) 5 and (A9) 6 | Open Terminals (A9) 2 and (A9) 5 | Continuity C Connect the ⊕ test lead to terminal (A9)4 and the ⊖ lead to the terminal (A9)5. Check continuity between the terminals. OK Continuity If there is no continuity, connect the ⊖ test lead to terminal (A9)4 and the ⊕ lead to terminal (A9)5. Recheck continuity between terminals. OK NG Replace ABS control relay. Repair or replace and check for open in harness and connector between DLC1 and ABS solenoid relay and body ground (See page IN–30).