Open in Pump Motor Circuit - ABS (Antilock Brake System)

BRAKE CONTROL: ANTI-LOCK BRAKE SYSTEM: C1251/51: Open in Pump Motor Circuit

DTC C1251/51 - Open in Pump Motor Circuit

DESCRIPTION

The motor relay (semiconductor relay) is housed in the skid control ECU and drives the pump motor based on a signal from the skid control ECU.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK POWER SOURCE CIRCUIT
(a) Check that the battery voltage, power source voltage, and the ground condition of the skid control ECU are normal.
OK:
The battery voltage, power source voltage, and the ground condition of the skid control ECU are normal.
NG -- REPAIR POWER SOURCE CIRCUIT
OK -- Continue to next step.
2. RECONFIRM DTC
(a) Clear the DTC .
(b) Start the engine.
(c) Drive the vehicle at a speed of 4 mph (6 km/h) or more for several seconds.
(d) Check if the same DTC is output .
Result:






B -- END
A -- REPLACE BRAKE ACTUATOR