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8 - 36V, 1W Driving Computer V-checker A301 Automobile Code Scanner
| + Introduce | |||
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V-checker A301 is a multi-function trip computer which helps users to quickly access to vehicle trouble code information and vehicle status. The device can provide alerts when several abnormal occur to the vehicle. The function of clearing trouble code greatly reduces the expensive maintenance costs and widely favored by users. |
| + Specification | |||
|---|---|---|---|
| Package: | Carton | Dimension: | 170mm × 130mm × 80mm |
| Weight: | 0.42Kg | Warranty: | One year |
Quickly retrieves vehicle Diagnostic Trouble Codes and other vehicle security information.
Displays real time oil consumption data, helps lowering maintenance cost.
Clears trouble code information and saves maintenance costs.
Real time vehicle trouble alerts include vehicle malfunction, high water temperature, over-low battery voltage, fatigue driving, over-speed, maintenance reminding, shift reminding.
Displays vehicle parameters, including engine speed, air pressure, real time oil consumption, acceleration performance, coolant temperature, oxygen sensor voltage.
Provides a variety of graphic and digitized images or texts under various driving modes including idle mode, tour mode and race mode.
Specification
Working voltage:8-36V
Working Current:100mA
Working power:1W
Standby Power:0.6W
+ FAQ
Q: What cars can A301 trip computer support?
A:It can work for all OBD2 compatible cars!
Q:Why it works fine for the first car, but cannot work if I use it for another car?
A:In order to ensure the quick using of the A301 computer, it will scan the communication mode of the car,
then lock the communication mode to the first car. If you remove the A301from the first car and install it in
another car, you should perform "restore factory settings". After restored, the trip computer will automatic
ally re-scan communication mode of the new car, "restore factory settings " steps: plug the OBD diagnosti
c interface Instrument power on → Display first screen → Press [OK] → Show hidden menu → Select th
e second “restore factory settings”
Q: Why the driving speed displayed on the computer is lower than the car dashboard
speed readings?
A: Almost all of the car speed displayed on the meter is not accurate, mainly for the security design. The
meter speed is always about 2-5% higher than the actual speed, that is why you drive 140Km/h on the hig
hway, but no radar detected it for over-speed. You real speed is only about 120Km/h.
Q: Why the slower of my car, the higher of the instant fuel consumption?
A: You should know this fact: when the car is in neutral sliding, the fuel consumption is not 0. Look at the
formula: = instantaneous fuel consumption per hundred kilometers = (100 * Cumulative injection volume) /
(speed * time). In the lower speed mode, the engine fuel injection is small; speed is low. It needs to take
more time to drive 100Km, when the speed is very low, the time is almost infinite. According to the formu
la, the instantaneous fuel consumption per hundred kilometers shown to be growing. Note: The instantaneo
us fuel consumption per hundred kilometers! = fuel injection quantity!
Q: Does the trip computer A301 need to be upgraded, how to upgrade?
A: Generally speaking, if you use A301 normally, we do not recommend you to upgrade it; of course, we
have been upgrading and improving the features of the A301 continuously. You can contact your local dea
ler to upgrade it if available.
Q: Why settled the shift reminder function, when the speed reaches a settled value, my trip computer do not remind.
A: The shift reminder function does not work under the cruise and idle modes. It can only work in the
competitive mode.
Q: Why the trip computer A301 always Alarm for temperature too high?
A: The trip computer A301’s water temperature alarm default setting value is 95 ℃, thetemperature of the
different models are different settings. Generally the car has a low speed fan and a high-speed fan, when
the temperature reaches a dangerous range; high-speed electronic fan will open to effectively reduce the
temperature of coolant. It is very dangerous if the high speed fan cannot start in time. You can check the
starting temperature of the fan and set the water temperature to the specified value.
Q: Where is the car’s OBD diagnostic connector?
A: The location of the diagnostic connector principles: take the driver as the center, radius of 0.5 meters, the
driver’s reach out and touch range. The specific location of OBD diagnostic interface, there is no uniform
standard. They are usually located under the steering wheel, at the top of brake pedal. If you still can not
find the diagnostic interface, please contact your local 4 S shop of the model.
Q: How to set fuel consumption factor?
A: The fuel factor is used to adjust the "instantaneous fuel consumption, the current default value is 331. This
coefficient is based on a complex formula and experience in numerous tests of the car. We don’t recom
mend you change this value. If the vehicle was modified or age of the vehicle too old, causing the vehicle
sensor aging, drift. You can adjust according it to their proportion of the actual situation of the vehicle. Suc
h as: fuel consumption factor = 331 +331 * 10% = 364, the instantaneous fuel consumption is increased by
10% on the original basis.
Q: When the car is running at a speed 2000RPM or above, instantaneous fuel consumption
shows about 10L/100km when sliding in gears, Is there any problem on caculation? Why
the instantaneous fuel consumption is increasing when the car is in neutral, does it
need more power in this case?
A: fuel consumption no.is bigger when put the car in gear than in neutral, it’s about 1L/H.It needs energy
when we put put more power on veering, electical machaine or brake pump at this moment. Instantaneous
fuel consumption maybe bigger If we put the car in neutral to slide in a low speed.when the car is moving
at a spped 1500RPM or above, normally ECU will make the without using any energy, so the fuel consumpt
ion is 0 at the moment.
Q: When the car is sliding in gear at or above 1500RPM with instantaneous fuel consumpt
ion 0, but why mine shows 7-8?
A:1500RPM is just an approximate number, It’s determined by acctual driving speed and water temperature
to low down the speed and stop fuel consumption(turn the fuel on before the car warm up).If it shows 7-8
on fuel consumption screen, that means the speed does not lowed and fuel is still consuming now.you can
try a slide in gear at a speed 60km/h, it should show 3 or less.
Q: A301 can quickly get vehicle ‘s trouble codes, Is there any way to test this functi
on safely?
A: Open your engine cover, disconnect the oxygen sensor or throttle position sensor etc plug like this. Start
the engine, in about 4-5 seconds, the engine fault light comes on, A301 also will alarm when the
engine starts, and shows the problem precisely.
Q: why the average fuel consumption is not accurate after using trip computer for a few
days?
A: The average fuel consumption is calculated based on fuel consumption and kilometres. Since you have just
had a short trip at beginning, which may cause the average fuel consumption isn’t accurate.The longer di
stance you travled the more accurate average fuel consumption number would be(usually need to travel
300 kilometers).Normally the average fuel consumption is very accurate, if you found large deviation com
pare to actual fuel consumption, customer can adjust it following this method: fill the duel tank (until it auto
matically shutoff), clear the oil gauge. At the same time make A301 to factory reset, and clear the average
fuel consumption no. to 0, then travle A km (recommended 400-500 km) and then to refuel B litre (until
it automatically shutoff), calculate C = B * 100 / A is the real fuel consumption per hundred kilometers,
A301’s average fuel consumption displays D, the average fuel consumption coefficient of E (the system
defaults to 116), the user can modify A301 average fuel consumption coefficient = E * C / D. This average
fuel consumption must be very accurate.
Q:Questions should be pay attention when install and remove a trip computer in a car?
A: Installation Steps: 【1】. Turn off the engine key. 【2】. Connect the host machine, diagnostic data cable
and bracket. 【3】. Layout the Diagnostic data cable according to the structure of vehicle, ensure it’s saf
e, reliable and neat. 【4】. Plug Diagnostic data cable OBD into the car OBD conector. 【5】. Start the
engine, follow the sceen prompts to initialize the trip computer.Please ture turn off the engine and pull out
OBD charger when remove the trip computer.
