Fail-Safe Chart

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: FAIL-SAFE CHART

1. FAIL-SAFE FUNCTION OF CONTROL SYSTEM

(a) When a malfunction is detected in the brake control system, the skid control ECU turns the ABS warning, brake warning / red (malfunction), brake warning / yellow (minor malfunction) and slip indicator lights come on, as well as prohibits ABS, BA, TR(A)C and VSC operations.

(b) If the skid control ECU detects that a system related to the hybrid control system is malfunctioning, it will prohibit operations of the TR(A)C and VSC systems in order to prevent further malfunctions and to protect the systems.





2. FAIL-SAFE FUNCTION OF HYDRAULIC SYSTEM

(a) If a malfunction is detected in the brake booster with master cylinder (skid control ECU or brake actuator) or an individual sensor, control will be stopped and brake effort will be generated by the brake booster with master cylinder (hydraulic brake booster).

(b) If brake control is stopped due to a malfunction in the hydraulic pressure source, the pressure generated in the master cylinder by the driver is applied to the wheel cylinders to ensure braking force.