Fail-Safe Chart
- FAIL-SAFE OPERATION
- When trouble occurs in the brake control system, the skid control ECU turns the warning light on, displays a DTC corresponding to the malfunctioning systems on the multi-information display, and prohibits ABS, BA, 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, EBP and BA system:
FAIL-SAFE CHART - ABS, EBP AND BA SYSTEMMalfunction Area Control Method ABS system ABS, BA, TRAC and VSC control prohibited BA system ABS, BA, TRAC and VSC control prohibited EBD system ABS, EBD, BA, TRAC and VSC control prohibited TRAC and VSC system:
FAIL-SAFE CHART - TRAC AND VSC SYSTEMMalfunction Area Control Method Engine control system
(TRAC and VSC systems)Before control: Disables control
During control: Uses only the brakes to effect controlBrake control system
(TRAC and VSC systems)Before control: Disables control
During control: Disables control (by gradually ending control)HINT:
As for the TRAC and VSC systems, different systems prohibit different controls depending on a malfunctioning part.