Lexus IS250 IS220d GSE20 ALE20 - CRUISE CONTROL
DTC P1578 Brake System Malfunction
DESCRIPTION
This DTC is output when the VSC system has a problem. Check the VSC system when this DTC is output.
| DTC No. | DTC Detection Condition | Trouble Area |
| P1578 | The ECM receives a brake system error signal for 0.2 sec. or more while the dynamic radar cruise control is in operation | VSC system |
INSPECTION PROCEDURE
- HINT:
- This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.
| 1.CHECK BRAKE SYSTEM |
Refer to how to proceed with troubleshooting .