DTC C0278/11 Open or Short Circuit in ABS Solenoid Relay Circuit: Description

The ABS solenoid relay supplies power to the ABS solenoid and TRAC solenoid.

The solenoid relay is turned on 1.5 seconds after the ignition switch is turned to ON, and is turned off if an open or short in the solenoid is detected by self diagnosis performed when the vehicle starts running. The ABS solenoid relay is housed in the skid control ECU in the brake actuator assembly.

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
C0278/11	Either of the following is detected: 3 or more solenoid valves are determined to be fault and voltage supplied to the solenoid to be fault at the same time. Solenoid valve relay is not turned off.	Fusible link block (ABS NO. 2 fuse) ABS solenoid relay circuit Brake actuator assembly (ABS solenoid relay)