DTC P1578: Brake System Malfunction: Procedure

1. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   Vehicle stability control system DTCs are not output.

NG → See step   3 

OK: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Perform the following to make sure the DTC detection conditions are met.

   HINT: 

   If the detection conditions are not met, the system cannot detect the malfunction.

   1. Drive the vehicle at a speed of 50 km/h (30 mph) or more.
   2. Turn the cruise control switch on.
3. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC P1578 is not output.

NG → See step   5 

OK → See step   4