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Home >> Lexus >> 2022 >> LS 500h AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (2 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park) >> DTC C1311: Open Circuit in Main Relay 1; DTC C1312: Short Circuit in Main Relay 1; DTC C1313: Open Circuit in Main Relay 2; DTC C1314: Short Circuit in Main Relay 2 [10/2020 - 10/2023] >> Monitor Strategy

Monitor Strategy

Related DTCs C12FA: Brake pressure control solenoid main relay 1 open circuit
C12FB: Brake pressure control solenoid main relay 1 short circuit
C130C: Brake pressure control solenoid main relay 2 open circuit
C130D: Brake pressure control solenoid main relay 2 short circuit
Required Sensors/Components (Main) Skid control ECU assembly
Required Sensors/Components (Related) Skid control ECU assembly
Frequency of Operation Continuous
Duration -: C12FA and C130C
1 second: C12FB and C130D
MIL Operation Immediately
Sequence of Operation None