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Home >> Lexus >> 1990 >> LS 400 >> Repair and Diagnosis >> Brakes >> Traction Control >> Traction Control System >> Component Testing >> TRAC Solenoid Relay

TRAC Solenoid Relay

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  1. Remove TRAC solenoid relay. Measure voltage (10-14 volts present) between terminal No. 1 of TRAC solenoid relay and body ground. Check and repair harness or connector, if not 10-14 volts.
  2. Check continuity between terminal No. 2 of TRAC solenoid relay and terminals SAC, SMC, SRC of ABS/TRAC ECU. If readings are not 2 ohms, replace TRAC solenoid relay. See Figure.
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