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: Description

The main relay is built into the skid control ECU and supplies power to the master cut solenoid and linear solenoid valve.

The main relay remains on for approximately 2 minutes after the ignition switch is turned off and the input of brake pedal operation signals stops, and supplies power to the system to keep it ready to operate.

DTC Code	INF Code	DTC Detection Condition	Trouble Area
C1311/11	1	Either of the following is detected: Relay contact is off (voltage at BS01 terminal is less than 3.5 V) for at least 0.2 seconds when +BI1 terminal voltage is 7.9 V or more and main relay 1 is on. +BI1 terminal voltage is less than 7.9 V and main relay 1 is not on for at least 0.2 seconds even though main relay 1 is turned on (voltage at BS01 terminal is 3.5 V or more).	Main relay 1 circuit Skid control ECU
C1312/12	3	Relay contact is on (voltage at BS01 terminal is 6.5 V or more) for at least 1 second when main relay 1 is off.	↑
C1313/13	4	Either of the following is detected: Relay contact is off (voltage at BS02 terminal is less than 3.5 V) for at least 0.2 seconds when +BI2 terminal voltage is 7.9 V or more and main relay 2 is on. +BI2 terminal voltage is less than 7.9 V and main relay 2 is not on for at least 2 seconds even though main relay 2 is turned on (voltage at BS02 terminal is 3.5 V or more).	Main relay 2 circuit Skid control ECU
C1314/14	6	Relay contact is on (voltage at BS02 terminal is 6.5 V or more) for at least 1 second when main relay 2 is off.	↑