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Home >> Lexus >> 2023 >> NX 250 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Electronically Controlled Brake System - Diagnostic Codes (5 Of 6)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HEV Model) >> DTC C141C-49: Brake Booster Motor "A" Control Internal Electronic Failure [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.

The motor relay which drives the pump motor and the motor fail-safe relay are built into the No. 1 skid control ECU (brake booster with master cylinder assembly). When the No. 2 skid control ECU (brake actuator assembly) judges that there is a malfunction such as overcurrent in the motor relay or motor fail-safe relay, the MIL is illuminated and a DTC is stored.

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