C0273

DTC C0273/13 Open or Short Circuit in ABS Motor Relay Circuit

DESCRIPTION

DTC Detection Condition:

- The ABS motor relays consist of the 2 semiconductor relays and are included in the J/B No. 2.
- The ABS motor relay 1 is turned on after turning the ignition switch to the ON position. If the DTCs in the ABS pump motor circuit are memorized, the ABS motor relay 1 cuts off the power supply to the ABS motor relay 2 and performs the fail safe.
- While any of the ABS, BA, TRAC and VSC is operating, the skid control ECU (included in the actuator) turns the ABS motor relay 2 on to operate the actuator pump motor.
- If the voltage applied to the ABS motor relays (+BM) drops below the condition that detects the DTCs due to the shortage of the battery or alternator output, the DTCs may be memorized.

Wiring Diagram:

Step 1:

Step 1(Continued)-4:

Step 5-6:

Step 7:

INSPECTION PROCEDURE

HINT: Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the intelligent tester.