Reverse Radar System Notes; Testing Function Of Sensor Can Not Work Normally In The Following Conditions; Sensor Detection Range Will Change In The Following Conditions; Detecting Mistake Might Appear In The Following Conditions - Lifan 620 Maintenance Manual

www.CarGeek.ir
Check circuit as shown in Fig. 4-112
Fig. 4-112
III. Reverse radar system notes
The system is the driving auxiliary equipment; the use of rearview mirror is indispensable. Driver
shall be at his/her own risk for accident caused by overspeed reverse and his/her negligence.

1. Testing function of sensor can not work normally in the following conditions

(1) Sensor covered by earth or snow (back to normal, after cleaning foreign matters with water)
(2) Sensor covered by hand
(3) For low external temperature, sensor fault caused by sensor freezing

2. Sensor detection range will change in the following conditions

(1) Sensor covered by earth or snow (back to normal, after cleaning foreign matters with water)
(2) Vehicle in insolation or low temperature condition

3. Detecting mistake might appear in the following conditions

(1) Driving on uneven road, gravel road or grass
(2) Influenced by sound made by other auto horns, motorcycle engine, air braking system of
oversize vehicles or influenced by sound wave of other vehicles with probes
(3) Vehicle with water stain made in rain
(4) Relatively great inclination of vehicle
(5) Sensor covered by earth or snow
(6) Vehicle with drawbar
(7) Another vehicle with probe is approaching
(8) Driving to higher or square curb
4. Sensor can not detect because of the shape or features of barriers
(1) Wirelike objects, e.g. wire or rope
(2) Objects can absorb sound wave greatly, e.g. cotton, snow accumulation, etc.
(3) Objects with sharp edge
(4) Object is too low
(5) Object is too high or the upper part of object is bulging
263
www.cargeek.ir