ABS W/Hydraulic Brake Booster Power Supply System

CIRCUIT DESCRIPTION




DETECTING CONDITIONS

Fail Safe Function;
If trouble occurs in the master cylinder pressure sensor circuit, the ECU cuts off current to the ABS solenoid relay and prohibits ABS & BA & TRAC & VSC controls and the brake system becomes normal.




WIRING DIAGRAM

Step 1:

Step 2:

Step 3:

Step 4:

INSPECTION PROCEDURE
Start the inspection from step 1 in case of using the LEXUS hand-held tester and start from step 2 in case of not using the LEXUS hand-held tester.