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Home >> Lexus >> 2019 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Electronically Controlled Brake System (Diagnostic Codes) (4 Of 7) >> Electronically Controlled Brake System >> DTC C1311-11: Open in Main Relay 1 Circuit; DTC C1312-12: Short in Main Relay 1 Circuit; DTC C1313-13: Open in Main Relay 2 Circuit; DTC C1314-14: Short in Main Relay 2 Circuit [08/2018 - 08/2019] >> Component Operating Range
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Component Operating Range

C12FA

All of the following conditions are met -
Main relay 1 On
Brake system voltage 1 Higher than 7 V
Main relay 1 monitor 3.5 V or more
C12FB

All of the following conditions are met -
Main relay 1 Off
C0597 (Case 1, 2 and 3) Not detected
BS01 voltage Less than 6.5 V
C130C

All of the following conditions are met -
Main relay 2 On
Brake system voltage 2 Higher than 7 V
Main relay 2 monitor 3.5 V or more
C130D

All of the following conditions are met -
Main relay 2 Off
C0597 (Case 1, 2 and 3) Not detected
BS02 voltage Less than 6.5 V
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