Question for the electrical experts :(

hi guys!

been having a few probs when connecting Nanocom to car recently. some days it will connect and read ECU, some days it wont. looked at the OBD lead under dash and no signs of corrosion or anything untoward.

is it worth removing the plug OFF the ECU and giving that a spray of contact fluid?

now IF i do, will i run into any problems when putting the plug back on, or is there nothing to worry about?

51 plate 4.6 Vogue.

Dave

Which ECU? Do you have a fault to clear?

Datatek said:

Which ECU? Do you have a fault to clear?

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well, i dont think i do, but i cant get in to see any settings via ECU. cant turn lights on and off, check things like that. just says "failure to communicate with ECU"

sas1810 said:

well, i dont think i do, but i cant get in to see any settings via ECU. cant turn lights on and off, check things like that. just says "failure to communicate with ECU"

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Yes, but which ECU? Engine, SRS, EAS, Becm? they all use different pins on the OBD connector. for some you need the ignition off, for others on.

Ecu doesn't turn the light on or of it controls the engine ,

defender300td1 said:

Ecu doesn't turn the light on or of it controls the engine ,

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well, been trying to go through everything. SRS is fine, BECM is mostly working, cant get engine data.

just thought cleaning the ECU in the engine bay may help it a bit.

or could it be cleaning the BECM and engine ECU to give it a jolt?

More likely to be where you plug in your device, if the others were not working you would know about it

defender300td1 said:

More likely to be where you plug in your device, if the others were not working you would know about it

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checked all the pins. all clean, all pin tests on Nano come back as good and test ok.

i managed to re-set the SRS fault i had. i can adjust the EAS, cant communicate with engine data, well it did 2 days ago, but not today.

i'll plug it in and go through each setting to see what it fails on

I haven't got or read all through the Manuels yet bug arnt there certain cycles you must do through the ignition for certain things .

I think there is. maybe thats what i'm doing wrong?

i'll have to have another read i think. if it still does the same, then no ideas

sas1810 said:

I think there is. maybe thats what i'm doing wrong?

i'll have to have another read i think. if it still does the same, then no ideas

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ah just buy a new one and be done with it

wil2813 said:

ah just buy a new one and be done with it

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new what?

and dont you bloody dare say a new rangie lol

sas1810 said:

new what?

and dont you bloody dare say a new rangie lol

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nanacom,or me rangie if u want i quite fancy that sport supercharged i had the other day tbh

wil2813 said:

nanacom,or me rangie if u want i quite fancy that sport supercharged i had the other day tbh

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lets see how your new box works first

I just need the dash lights on to read all my engine settings (diesel).

Grrrrrr said:

I just need the dash lights on to read all my engine settings (diesel).

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+1 i think you need the ignition at pos 2 or engine running for engine ECU and instrument mode.

rodntod said:

+1 i think you need the ignition at pos 2 or engine running for engine ECU and instrument mode.

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thats the problem. the other day i could get real time values and data from the engine. today i couldnt, would not communicate

Have you checked the 5 amp fuse in the fuse box under the bonnet thats the power for the obd

ovalandrover said:

Have you checked the 5 amp fuse in the fuse box under the bonnet thats the power for the obd

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but if that was blown, wouldnt it block all communication?

sas1810 said:

thats the problem. the other day i could get real time values and data from the engine. today i couldnt, would not communicate

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Have you unplugged the nanocom while it was active ie trying to communicate? If you have it's possible you have scrambled the software in the Nanocom. It happens with Faultmate, not sure if it can happen with the Nanocom. For safety, they should never be unplugged until the device is at rest, preferably back at the home page display.