C0273

DTC C0273/13 Open in ABS Motor Relay Circuit

DESCRIPTION

DTC Detection Condition:

If a DTC of the motor line is stored, the VSC NO. 1 (fail safe) relay cuts off the power supply to the VSC NO. 2 relay and performs fail safe.

While any of the ABS, TRAC, VSC, or BA is operating, the skid control ECU (housed in the actuator assembly) turns the VSC NO. 2 relay on and activates the pump motor in the brake actuator.

This code may be stored if the motor relay (BM) voltage becomes lower than the DTC detecting condition due to insufficient output from the battery or alternator.

Wiring Diagram:

Step 1:

Step 2-3:

Step 4-5:

Step 6-7:

Step 7(Continued):

INSPECTION PROCEDURE

NOTE: When replacing the brake actuator assembly, perform zero point calibration. Programming and Relearning