Related Tests, Information and Procedures

Always On - ABS ECU Malfunction

CIRCUIT DESCRIPTION

DTC Detection Condition:

HINT: There is a case that TOYOTA hand-held tester cannot be used when the ECU is abnormal.

Fail safe function:
If any trouble occurs in the ECU, the ECU cuts off the current to the ABS solenoid relay and prohibits the ABS control and brake system from being normal.

Wiring Diagram:

Steps 1 - 3:

Steps 4 - 5:

INSPECTION PROCEDURE