DTC C146C: Open in ABS Motor Relay Circuit [08/2015 - ]: Description

The ABS motor relay supplies power to the pump motor. While the ABS is activated, the skid control ECU turns the ABS motor relay on to operate the pump motor.

If the voltage supplied to the ABS motor relay (+BM) is too low due to low voltage from the battery or alternator, the DTC may be stored.

DTC No.	DTC Detection Condition	Trouble Area
C146C	Any of the following is detected: When the ABS motor relay is actuated, voltage is not supplied to the pump motor. When the ABS motor relay is not actuated, voltage in the pump motor is high. The skid control ECU judges that pump motor operation is abnormal.	ABS NO. 1 fuse (Fusible link block assembly) ABS motor relay circuit ABS motor relay (Brake actuator assembly)