LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2024 >> LC 500h >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (4 Of 7) >> Electronically Controlled Brake System >> 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 [09/2018 - 06/2019] >> Typical Enabling Conditions
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Typical Enabling Conditions

C12FA

Monitor runs whenever the following DTCs are not stored None
Brake system voltage 1 Higher than 7 V
C12FB

Monitor runs whenever the following DTCs are not stored C0597 (Case 1): Skid control ECU EEPROM malfunction
C0597 (Case 2): Skid control ECU lost communication
C0597 (Case 3): Skid control ECU CPU malfunction
C0597 (Case 4): Skid control ECU IC malfunction
C0597 (Case 5): Skid control ECU signal CPU communication failure
Both of the following conditions are met -
Main relay 1 Off
C0597 (Case 1, 2 and 3) Not detected
C130C

Monitor runs whenever the following DTCs are not stored None
Brake system voltage 2 Higher than 7 V
C130D

Monitor runs whenever the following DTCs are not stored C0597 (Case 1): Skid control ECU EEPROM malfunction
C0597 (Case 2): Skid control ECU lost communication
C0597 (Case 3): Skid control ECU CPU malfunction
C0597 (Case 4): Skid control ECU IC malfunction
C0597 (Case 5): Skid control ECU signal CPU communication failure
Both of the following conditions are met -
Main relay 2 Off
C0597 (Case 1, 2 and 3) Not detected