DTC P1578: Brake System Malfunction: Description
WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is output when the VSC system has a problem. Check the VSC system when this DTC is output.
DIAGNOSTIC TROUBLE CODE CHART
| 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 |
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.
- CHECK BRAKE SYSTEM
Refer to HOW TO PROCEED WITH TROUBLESHOOTING .