Document ID: chunk:federal_register_of_legislation:F2021C00476:body:0:p62
Version: federal_register_of_legislation:F2021C00476
Segment Type: other
Provision Reference: 
Character Range: 172206–175248

the double integration method.

       3.3.2. Time t = 0 for the integration operation is the instant of steering initiation, known as the Beginning of Steer (BOS).  BOS is defined in paragraph 5.11.6.

       3.4. ESC malfunction detection

        The vehicle shall be equipped with a tell-tale that provides a warning to the driver of the occurrence of any malfunction that affects the generation or transmission of control or response signals in the vehicle's electronic stability control system.

       3.4.1. The ESC malfunction tell-tale:

       3.4.1.1. Shall be displayed in direct and clear view of the driver, while in the driver's designated seating position with the driver's seat belt fastened;

       3.4.1.2. Shall appear perceptually upright to the driver while driving;

       3.4.1.3. Shall be identified by the symbol shown for "ESC Malfunction Tell-tale" below or the text "ESC":
       3.4.1.4. Shall be yellow or amber in colour;

       3.4.1.5. When illuminated must be sufficiently bright to be visible to the driver under both daylight and night-time driving conditions, when the driver has adapted to the ambient roadway light conditions;

       3.4.1.6. Except as provided in paragraph 3.4.1.7., the ESC malfunction tell-tale shall illuminate when a malfunction exists and shall remain continuously illuminated under the conditions specified in paragraph 3.4. for as long as the malfunction exists, whenever the ignition locking system is in the "On" ("Run") position;

       3.4.1.7. Except as provided in paragraph 3.4.2., each ESC malfunction 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;

       3.4.1.8. Shall extinguish at the next ignition cycle after the malfunction has been corrected in accordance with paragraph 5.10.4.;

       3.4.1.9. May also be used to indicate the malfunction of related systems/functions, including traction control, trailer stability assist, corner brake control, and other similar functions that use throttle and/or individual torque control to operate and share common components with ESC.

       3.4.2. The ESC malfunction tell-tale need not be activated when a starter interlock is in operation.

       3.4.3. The requirement of paragraph 3.4.1.7. does not apply to tell-tales shown in a common space.

       3.4.4.  The manufacturer may use the ESC malfunction tell-tale in a flashing mode to indicate ESC operation.

       3.5. ESC Off and other system controls

        The manufacturer may include an "ESC Off" control, which shall be illuminated when the vehicle's headlamps are activated, and which has a purpose to place the ESC system in a mode in which it will no longer satisfy the performance requirements of paragraphs 3., 3.1., 3.2. and 3.3.  Manufacturers may also provide controls