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Home >> Lexus >> 2024 >> NX 250 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Electronically Controlled Brake System - Diagnostic Codes (3 Of 6)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HEV Model) >> DTC C1020-00: Ignition Switch On/Start Position Malfunction [11/2021 - ] >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.

During normal operation, the voltage at IGR and IGP change mutually; however, if the voltages do not change mutually such as when IGR is off and IGP is on, the No. 2 skid control ECU (brake actuator assembly) judges that there is an open in the IGR circuit and illuminates the MIL and stores this DTC.

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