TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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BAT/Brakes, ABS & TRAC Systems79 / 167
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Check TRAC solenoid relay. — MK4 Supra Brakes, ABS & TRAC Systems, page 79
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BR–79 BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS) 3 Check TRAC solenoid relay. P Remove TRAC solenoid relay from R/B No. 5. C Check continuity between each terminal of TRAC solenoid relay shown below. OK Terminals 4 and 6 Continuity (Reference value 80 ) Terminals 2 and 3 Continuity Terminals 1 and 3 Open Open Continuity Continuity Continuity Open C 1. Apply battery voltage between terminals 4 and 6. 2. Check continuity between terminal shown below. OK Terminals 2 and 3 Open Terminals 1 and 3 Continuity BR5403 BR5404 BR5405 OK NG Replace TRAC solenoid relay. 4 Check for open and short in harness and connector between TRAC solenoid relay and ABS & TRAC ECU (See page IN–30). OK NG Repair or replace harness or connector. If the same code is still output after the diagnostic trouble code is deleted, check the contact condition of each connection. If the connections are normal, the ECU may be defective.