DTC C0278/11 Open in ABS Solenoid Relay Circuit; DTC C0279/12 Short to B+ in ABS Solenoid Relay Circuit: Description
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
The solenoid relay supplies power to the ABS solenoid.
After the ignition switch is turned to ON, the vehicle speed has reached 3 mph (5 km/h) and the solenoid is determined to be normal by the initial check self-diagnosis, the relay switches on. If any open or short circuits are detected, the relay switches off.
These DTCs may be set if the voltage supply to the solenoid relay (+BS) falls below the DTC detection threshold due to the battery or alternator outputs being insufficient.
DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE
| DTC No. | DTC Detecting Condition | Trouble Areas |
|---|---|---|
| C0278/11 | When either of following conditions (1 or 2) detected:
|
|
| C0279/12 | Immediately after ignition switch turned to ON, solenoid relay contact closed for 0.2 seconds or more when relay off. |
|
HINT:
C0278/11 and C0279/12: The skid control ECU begins to detect these DTCs when the vehicle speed exceeds 4 mph (6 km/h).