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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 106 (Electronically Controlled Brake System (HV) - Diagnostic Codes (01 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C0506-1F: Right Front Wheel Speed Sensor Circuit Intermittent [12/2019 - 10/2021] >> Monitor Description

Monitor Description

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The No. 2 skid control ECU (brake actuator assembly) monitors the output value of the speed sensors. When the vehicle is being driven and a sudden irregular change in acceleration due to iron particles being attached to the speed sensor is detected repeatedly, or periodic sudden changes in acceleration due to iron particles being attached to the speed sensor rotor is detected, the No. 2 skid control ECU (brake actuator assembly) judges that speed sensor noise is occurring and illuminates the MIL and stores this DTC.

Also, when the vehicle is being driven and the output value of the speed sensor is momentarily interrupted repeatedly, the No. 2 skid control ECU (brake actuator assembly) judges that there is a momentary interruption in the speed sensor circuit and illuminates the MIL and stores this DTC.

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