tarphenry

Well-Known Member

• Jul 29, 2020

• #1

Hi all,as title suggests my Nanocom talks to the EAS without problems but it wont talk to either the HEVAC or the door outstation . however 2 or 3 days ago it was ok with both. Is there any fuses that I should know about? Any assistance gratefully received. Thanks

 

pwood999

Well-Known Member

Full Member

• Jul 29, 2020

• #2

I often have HEVAC comms issues on mine. Re-plug Nanocom cable into diagnostic socket a few times & try again. Socket might need cleaning ?

Door outstations are via BECM, which only seems to work with ignition off on mine.

 

tarphenry

Well-Known Member

• Jul 29, 2020

• #3

thanks mate

 

wammers

No longer with us, RIP

Donater

• Jul 29, 2020

• #4

You sometimes get comms problems with the hevac if your BECM is unlocked.

 

tarphenry

Well-Known Member

• Jul 29, 2020

• #5

Thanks,it worked last week !!

 

wammers

No longer with us, RIP

Donater

• Jul 30, 2020

• #6

As said sometimes communication with Hevac can be lost if BECM is set unlocked. Hevac feeds into datalink connector via two wires pin 7 Pink/red, pin 15 Light green/red. But if there are bad connections on these two wires there will be several other systems that will not connect as they are all linked to these two wires. Engine ECU/Cruise control/ABS/BECM will not communicate.

 

tarphenry

Well-Known Member

• Jul 30, 2020

• #7

thanks again .dont understand much about electrics but will try ad see if anything obvious is apprrent

 

pwood999

Well-Known Member

Full Member

• Jul 30, 2020

• #8

Don't forget that the diagnostic data line you need also goes via C102 / C202 (behind RH kick panel). They usually corrode so could be the cause of no communications ?

 

tarphenry

Well-Known Member

• Jul 30, 2020

• #9

thanks all, did a bit of " greenery" removal yesterday. this am " key in pos 2" engine not running managed to talk to outstation on L H door and get windows to work again will keep trying for HEVAC

 

Grrrrrr

Technician, Bodgit & Scarper Ltd

Full Member

• Jul 31, 2020

• #10

pwood999 said:

I often have HEVAC comms issues on mine. Re-plug Nanocom cable into diagnostic socket a few times & try again. Socket might need cleaning ?

Door outstations are via BECM, which only seems to work with ignition off on mine.

Click to expand...

+1.

Sometimes it works and sometimes it doesn't. I just wait and it seems to fix itself.