Prius L4-1.8L (2ZR-FXE) Hybrid (2010)
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, TRAC and VSC operations.
(b) If the skid control ECU detects that a system related to the hybrid control system is malfunctioning, it will prohibit operation of the TRAC and
VSC system in order to prevent further malfunctions and to protect the system.
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.
Check For Intermittent Problems
BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: CHECK FOR
INTERMITTENT PROBLEMS
1. CHECK FOR INTERMITTENT PROBLEMS
HINT