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Home >> Lexus >> 1997 >> ES 300 >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - With Traction Control >> Self-Diagnostics >> DTC 43: Abs Control System Malfunction >> Circuit Description
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Circuit Description

DTC is set when engine is idling at 500 RPM or more, ABS ECU is detecting an on signal at A20 connector terminal No. 4 (Green/Black wire), TRAC system is not functioning, ABS DTC are output but TRAC DTC are not output for one second or more.

DTC is set when open or short exists in ABS solenoid relay circuit, ABS motor relay circuit, ABS solenoid circuit or TRAC solenoid circuit.

DTC is set when ABS/TRAC ECU detects high or low voltage at A20 connector terminal No. 8 (Black/Red wire). Speed sensor is malfunctioning. Pump motor is locked. Possible causes are:

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