Question

Hello, I´m thiking of testing "LLS Calibration" function on the FMC130, I want to know if the tracker will ignore LLS values while ignition is off? If the analog input sends the reading with ignition off, the tracking plaform will think the tank has been emptied out.

Can someone confirm if the tracker does or does not ignore the LLS reading from Analog Input 1 and Analog Input 2 when the ignition is off?

Also, with OEM fuel levels, once the ignition is turned on, the fuel level takes about 2 to 3 seconds to provide the correct reading, does the tracker provide a delay before it takes the first reading post-ignition?

Regards

Answer 1

Hello,

Vehicle ignition has to be on when testing LLS fuel sensors. It is not the tracking device that sends signal into the fuel sensors and get the reading, it is the car that sends signal of fuel data and the tracking device reads it.

The delay of fuel level on dashboard and on the device will be the same, the tracking device is accepting the same signal as the dashboard.

Kind regards.

Comments

Thank you for your response @MindaugasK.

I understand the fact that the tracker does not send the signal to the fuel sensor. My question is regarding what the tracker will read when the vehicile´s ignition is turned off. If the tracker keeps "tecnichaly accepting/reading the input value" with the ignition off, once the tracker sends all IO values to the tracking platorm it will send a "zero mV" value since the vehicle does not measure fuel level when ignition is off.

If this is the case, the tracking platform will interpret that the gas tank is empty every time the ignition is turned off. This is not the case with aftermarket fuel level sensors (let´s say Escort fuel sensors) because they are powered (fed 12v) even when the ignition is turned off.

I am basically hoping that once analog input 1 & 2, are selected to be used as LLS Calibration, the tracker is smart enough to ignore the fuel level value when the ignition is off (tracker excludes reading the fuel sensor value), plus a small delay once the ignition is turned on to avoid bogus values.

Thanks again

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Hello,

If you will connect the tracker to LLS sensor that overcomes ignition off status by powering itself up from the battery and still measures fuel data, the tracker will show you what that LLS sensor will read. The tracking unit will show you that ignition is off, however it will still read the fuel data from that LLS sensor. As long as the tracking unit is on and working, it will read the values to which its cables are connected, if there is no data being sent by the LLS unit, it will not read it.

Kind regards.

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Thanks a lot @MindaugasK that answers my question.

Best regards