Document ID: chunk:federal_register_of_legislation:F2025C00107:reg:4:p18
Version: federal_register_of_legislation:F2025C00107
Segment Type: reg
Provision Reference: reg 4 (pt 18/26)
Character Range: 135735–139310

has slowed the vehicle by more than 4.8 km/h below the 'Entrance Speed'.

 1.                                  'Vehicle Stability Function' failure/defect test procedures
     1.                            Simulate one or more 'Vehicle Stability Function' failure(s) or defect(s) by disconnecting the power source to any 'Vehicle Stability Function' component, or disconnecting any electrical connection between 'Vehicle Stability Function' components (with the vehicle power off).  When simulating a 'Vehicle Stability Function' failure or defect, the electrical connections for the tell-tale lamp(s) are not disconnected.
     2.                            With the vehicle initially stationary and the ignition locking system in the "Lock" or "Off" position, activate the ignition locking system to the "Start" position and start the engine.  Place the vehicle in a forward gear and accelerate to 48 ± 8 km/h.  Drive the vehicle for at least two minutes including at least one left and one right turning manoeuvre and at least one service brake application.  Verify that, within two minutes of attaining this speed, the 'Vehicle Stability Function' failure/defect indicator illuminates in accordance with clause 3.3 of APPENDIX 3 of this standard.
     3.                            Stop the vehicle, deactivate the ignition locking system to the "Off" or "Lock" position.  After a five-minute period, activate the vehicle's ignition locking system to the "Start" position and start the engine.  Verify that the 'Vehicle Stability Function' failure/defect indicator again illuminates to signal a failure/defect and remains illuminated as long as the engine is running until the fault is corrected.
     4.                            Deactivate the ignition locking system to the "Off" or "Lock" position. Restore the 'Vehicle Stability Function' to normal operation, activate the ignition system to the "Start" position and start the engine.  Verify that the tell-tale has extinguished.

 2.                                  Data processing
     1.                            Raw vehicle speed data must be filtered with a 0.1 second running average filter.
     2.                            The torque data collected from the vehicle communication network or CAN bus as a digital signal must not be filtered.
     3.                            The torque data collected from the vehicle communication network or CAN bus as an analogue signal must be filtered with a 0.1-second running average.
     4.                            The time measurement for the J-Turn test procedure must be referenced to 'Time Zero'.
     5.                            Raw service brake pressure measurements must be zeroed (calibrated). Zeroed brake pressure data must be filtered with 0.1 second running average filters.  Zeroed and filtered brake pressure data must be dynamically offset corrected using a 'Zeroing Range'.

TABLE 7
SUMMARY OF VEHICLE STABILITY FUNCTION TESTS
Tests and Procedures                                         Vehicle Category              Initial Speed (km/h)      Vehicle Mass  Transmission Condition(s)
Preliminary Reference Speed Determination                    ME (> 12 tonnes 'GVM' only)*  See text (clause 6.1.1)   M             D
                                                             NC ('Prime Movers' only)**
Reference Speed Determination                                ME (> 12 tonnes 'GVM' only)*  See text (clause 6.1.2)
                                                             NC ('Prime Movers' only)**
Engine Torque Reduction Tests