Fail-Safe Chart

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: FAIL-SAFE CHART

1. FAIL-SAFE OPERATION

When trouble occurs in the brake control system, the skid control ECU turns the warning/indicator lights on, displays a DTC corresponding to the malfunctioning systems on the multi-information display, and prohibits ABS, BA, TR(A)C and VSC operations.

The skid control ECU prevents operation of a malfunctioning hydraulic pressure system and continues brake control with the normal hydraulic pressure system.

HINT
* If control of the electronically controlled brake system for any of the 4 wheels is prohibited, that wheel loses brake booster function or braking ability.
* If one of the 4 wheels loses brake booster function, the feeling when depressing the brake pedal changes as the stroke simulator (pedal reactive force generating solenoid) operation will be prohibited.
* If control of the electronically controlled brake system for all wheels is prohibited, the 2 front wheels will lose brake booster function.

ABS, EBD and BA system:





TR(A)C and VSC system:





HINT
As for the TR(A)C and VSC systems, different systems prohibit different controls depending on a malfunctioning part.