Fail-Safe Chart

PRE-COLLISION: PRE-COLLISION SYSTEM: FAIL-SAFE CHART

1. FAIL SAFE FUNCTION

(a) When a malfunction occurs in part of the pre-collision system, "CHECK PCS SYSTEM" or "PCS TEMPORARILY NOT AVAILABLE" is displayed on the multi-information display. Depending on the malfunction, the pre-collision system may stop operating.

(b) When the driving support ECU determines that obstacle recognition is not possible due to dirt on the radiator grille or millimeter wave radar sensor assembly, or due to snow or other adverse conditions, "PCS TEMPORARILY NOT AVAILABLE" is displayed on the multi-information display and operation of systems except pre-collision seat belt control operation linked with understeer or oversteer tendency operation and sudden brake control are stopped. When obstacle recognition becomes possible, the display stops and normal control returns.

(c) If the overheating protection function of the seat belt control ECU or millimeter wave radar sensor assembly operates, "PCS TEMPORARILY NOT AVAILABLE" is displayed on the combination meter assembly and pre-collision seat belt control stops. When the temperature drops and pre-collision system operation is possible, the display turns off and normal control returns.

(d) If a malfunction occurs in the lane recognition camera sensor or driver monitor camera, "CHECK PCS SYSTEM" is displayed on the multi-information display and collision judgment is performed using only the millimeter wave radar sensor assembly.