Document ID: chunk:federal_register_of_legislation:F2014C01109:body:0:p33
Version: federal_register_of_legislation:F2014C01109
Segment Type: other
Provision Reference: 
Character Range: 96778–99785

visible to the driver under both daylight and night time driving conditions, when the driver has adapted to the ambient roadway light conditions;

       3.6.2.6. Shall remain continuously illuminated for as long as the ESC is in a mode that renders it unable to satisfy the requirements of paragraphs 3., 3.1., 3.2. and 3.3;

       3.6.2.7. Except as provided in paragraphs 3.6.3. and 3.6.4. each "ESC Off" tell-tale shall be activated as a check of lamp function either when the ignition locking system is turned to the "On" ("Run") position when the engine is not running, or when the ignition locking system is in a position between "On" ("Run") and "Start" that is designated by the manufacturer as a check position.

       3.6.2.8. Shall extinguish after the ESC system has been returned to the manufacturer's original default mode.

       3.6.3. The "ESC Off" tell-tale need not be activated when a starter interlock is in operation.

       3.6.4. The requirement of paragraph 3.6.2.7. of this appendix does not apply to tell-tales shown in a common space.

       3.6.5. The manufacturer may use the "ESC Off" tell-tale to indicate an ESC level of function other than the manufacturer's original default mode even if the vehicle would meet paragraphs 3., 3.1., 3.2. and 3.3. of this appendix at that level of ESC function.

       3.7. ESC system technical documentation

        Further to the requirements defined in Appendix 2 – Attachment 4 to this standard, the manufacturer shall, as confirmation that the vehicle is equipped with an ESC system that meets the definition of an "ESC System" as in paragraph 0.2. to this appendix, include the vehicle manufacturer's documentation as specified in paragraphs 3.7.1. to 3.7.4. below.

       3.7.1. System diagram identifying all ESC system hardware.  The diagram shall identify those components that are used to generate brake torques at each wheel, determine vehicle yaw rate, estimated side-slip or the side-slip derivative and driver steering inputs.

       3.7.2. A brief written explanation sufficient to describe the ESC system's basic operational characteristics.  This explanation shall include the outline description of the system's capability to apply braking torques at each wheel and how the system modifies propulsion torque during ESC system activation, and show that the vehicle yaw rate is directly determined.  The explanation shall also specify the vehicle speed range and the driving phases (acceleration, deceleration, coasting, during activation of the ABS or traction control) under which the ESC system can activate.

       3.7.3. Logic diagram.  This diagram supports the explanation provided under paragraph 3.7.2.

       3.7.4. Understeer information.  An outline description of the pertinent inputs to the computer that control ESC system hardware and how they are used to limit vehicle understeer.

       4. TEST CONDITIONS

       4.1. Ambient conditions

       4.1.1. The ambient temperature is between 0 °C