DTC C1257/57 IG Power Source: Description
The motor relay (semiconductor relay) is built into the hydraulic brake booster and drives the pump motor based on a signal from the skid control ECU.
DTC DETECTING CONDITIONS AND TROUBLE AREAS REFERENCE
| DTC No. | DTC Detecting Condition | Trouble Areas |
|---|---|---|
| C1257/57 | Open in pump motor input circuit |
|