Document ID: chunk:federal_register_of_legislation:F2021C00476:body:0:p69
Version: federal_register_of_legislation:F2021C00476
Segment Type: other
Provision Reference: 
Character Range: 190706–193457

runs using a steering pattern of a sine wave at 0.7 Hz frequency with a 500 ms delay beginning at the second peak amplitude as shown in Figure 2 (the Sine with Dwell tests).  One series uses anticlockwise steering for the first half cycle, and the other series uses clockwise steering for the first half cycle.  The vehicle is allowed to cool-down between each test runs for a period of 1.5 to 5 minutes, with the vehicle stationary.
       Handwheel Angle should be Steering Wheel Angle

       5.9.1. The steering motion is initiated with the vehicle coasting in high gear at 80 ± 2 km/h.

       5.9.2. The steering amplitude for the initial run of each series is 1.5 A, where A is the steering wheel angle determined in paragraph 5.6.1.

       5.9.3. In each series of test runs, the steering amplitude is increased from run to run, by 0.5 A, provided that no such run will result in a steering amplitude greater than that of the final run specified in paragraph 5.9.4.

       5.9.4. The steering amplitude of the final run in each series is the greater of 6.5 A or 270 degrees, provided the calculated magnitude of 6.5 A is less than or equal to 300 degrees.  If any 0.5 A increment, up to 6.5 A, is greater than 300 degrees, the steering amplitude of the final run shall be 300 degrees.

       5.9.5. Upon completion of the two series of test runs, post processing of yaw rate and lateral acceleration data is done as specified in paragraph 5.11.

       5.10. ESC malfunction detection

       5.10.1. Simulate one or more ESC malfunction(s) by disconnecting the power source to any ESC component, or disconnecting any electrical connection between ESC components (with the vehicle power off).  When simulating an ESC malfunction, the electrical connections for the tell-tale lamp(s) and/or optional ESC system control(s) are not to be disconnected.

       5.10.2. With the vehicle initially stationary and the ignition locking system in the "Lock" or "Off" position, switch the ignition locking system to the "Start" position and start the engine.  Drive the vehicle forward to obtain a vehicle speed of 48 + 8 km/h. 30 seconds, at the latest, after the engine has been started and within the next two minutes at this speed, conduct at least one left and one right smooth turning manoeuvre without losing directional stability and one brake application.  Verify that the ESC malfunction indicator illuminates in accordance with paragraph 3.4. by the end of these manoeuvres.

       5.10.3. Stop the vehicle, switch the ignition locking system to the "Off" or "Lock" position.  After a five-minute period, switch the vehicle's ignition locking system to the "Start" position and start the engine.  Verify that the ESC malfunction indicator