DTC C0273/13 Open in ABS Motor Relay Circuit; DTC C1251/51 Open in Pump Motor Circuit: Description

WARNING: This page is about a different car, the 2009 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

The ABS motor relay (skid control ECU interior circuit) supplies the power to the ABS pump motor. While the ABS is activated, the ECU turns the motor relay ON and operates the ABS pump motor.

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
C0273/13	When one of following conditions is met: Pump motor voltage is 2.0 V or more for 1 sec. or more at motor relay OFF. Pump motor voltage is (IG - 4.0 V) or less for 0.1 sec. or more at motor relay ON. After the end of the actuation of the motor relay, slow down condition of motor does not meet the specification.	ABS1 fuse Harness or connector (+BM circuit) VSC actuator (skid control ECU)
C1251/51	When any of following conditions detected with normal battery voltage (10 V or more): Open in pump motor power supply circuit or open in motor power supply circuit ground Motor stuck mechanically and does not operate Motor coil shorted and overcurrent flows	ABS1 fuse VSC actuator (skid control ECU)

HINT:

C0273/13: The skid control ECU begins to detect these DTCs when the vehicle speed exceeds 15 km/h (9 mph).