Division 2.1.2 Basic vehicle conditions
The paragraph defines minimum test conditions and failures criteria for vehicle immunity tests. Other vehicle systems, which can affect immunity-related functions must be tested in a way to be agreed between manufacturer and technical service.
| ‘50 km/h cycle’ vehicle test conditions | Failure criteria |
|---|---|
| Vehicle speed 50 km/h ± 20 % (vehicle driving the rollers). If the vehicle is equipped with a cruise control system, it shall be operational | Speed variation greater than ± 10 % of the nominal speed In case of automatic gearbox: change-of-gear ratio inducing a speed variation greater than ± 10 % of the nominal speed |
| Dipped beams ON (manual mode) | Lighting OFF |
| Front wiper ON (manual mode) maximum speed | Complete stop of front wiper |
| Direction indicator on driver’s side ON | Frequency change (lower than 0,75 Hz or greater than 2,25 Hz) Duty cycle change (lower than 25 % or greater than 75 %) |
| Adjustable suspension in normal position | Unexpected significant variation |
| Driver’s seat and steering wheel in medium position | Unexpected variation greater than 10 % of total range |
| Alarm unset | Unexpected activation of alarm |
| Horn OFF | Unexpected activation of horn |
| Airbag and safety restraint systems operational with inhibited passenger airbag if this function exists | Unexpected activation |
| Automatic doors closed | Unexpected opening |
| Adjustable endurance brake lever in normal position | Unexpected activation |
| ‘Brake cycle’ vehicle test conditions | Failure criteria |
|---|---|
| To be defined in brake cycle test plan. This must include operation of the brake pedal (unless there are technical reasons not to do so) but not necessarily an anti-lock brake system action. | Stop lights inactivated during cycle Brake warning light ON with loss of function Unexpected activation |