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Home >> Lexus >> 1998 >> SC 400 >> Repair and Diagnosis >> Brakes >> Traction Control >> Traction Control System >> Circuit Tests >> DTC 41: IG Power Supply Circuit >> Circuit Description

Circuit Description

Voltage is supplied from ignition switch to ABS/TRAC ECU and actuators. DTC is set when ECU detects voltage of 17 volts or greater for more than 5 seconds. DTC is also set when ECU detects voltage of 9.5 volts or greater for more than 10 seconds, with engine speed or 500 RPM or greater. If trouble occurs in power source circuit, ECU performs a fail safe function, turning off current and prohibiting TRAC control. Possible causes are:

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