C0273: Open in ABS Motor Relay Circuit
Short answer: C0273 means “Open in ABS Motor Relay Circuit”. Below is what it means on each of the 2 cars we cover, with a link to the full page for each car.
C0273 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Vitz (1st gen) | ABS motor relay circuit (open) | medium |
| Toyota Corolla (9th gen, E120) | Open in ABS Motor Relay Circuit (C0273/13) | high |
Symptoms
- With IG1 voltage 10V or below during initial check or ABS control, pump motor relay is turned ON, and relay contact is not ON for 0.2 sec. or longer. When pump motor relay is turned OFF, relay contact is ON for 3 sec. or longer.
Likely causes
- ABS motor relay; ABS motor relay circuit
What to check, in order
- Workshop check order (RM821E): INSPECT SKID CONTROL ECU CONNECTOR (+BM TERMINAL VOLTAGE) -> CHECK DTC ONCE MORE -> INSPECT CONTACT CONDITION (EACH CONNECTION) -> INSPECT FUSES (ABS No. 2)
Causes and checks above are the general meaning. The exact test steps and values differ by car: open your car’s page.