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Home >> Lexus >> 1996 >> SC 400 >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Circuit Tests >> DTC 56 - Pressure Sensor Circuit >> Circuit Description
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Circuit Description

Pressure sensor detects TRAC accumulator hydraulic pressure. When pressure is low, ECU operates TRAC pump. DTC is set when ECU detects less than one volt at terminal No. 2 on TRAC actuator connector T4. Cause is pressure sensor open or short circuit.

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