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Solved ✔ megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
26-08-2022, 09:07 AM,
Post: #1
megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
hello guys..this car is driving us crazy and i would really like to hear some ideas..car has no start and no communication with ecu and vent is on..canbus high wire between upc and ecu was broken and we changed the wire but still no communication with ecu.voltages for ecu are all there,i will post schematic for this ecu and explanation.from autodata schematic ecu communicate with upc on canbus.maybe some other wire is in problem?i know on older models we have problem with orange wire from ecu to upc but this one doesnt have that wire or maybe it is in different colour and location?what voltage do i need to have on kline?

   
26-08-2022, 15:23 PM,
Post: #2
RE: megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
do you have any more broken cable, open installation that goes through the battery, more than a couple I had to repair cables in that installation curve
[+] 1 user says Thank You to fordobd for this post
26-08-2022, 15:32 PM,
Post: #3
RE: megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
(26-08-2022, 15:23 PM)fordobd Wrote:  do you have any more broken cable, open installation that goes through the battery, more than a couple I had to repair cables in that installation curve

all wires tested..visual and with resistance.what feeds k line on obd2 connector?do u know where does it gets 12 v(+ - 1 v)
26-08-2022, 17:03 PM,
Post: #4
RE: megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
uses  dialogys+ clip guided diagnostic interface
26-08-2022, 19:51 PM,
Post: #5
RE: megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
(26-08-2022, 17:03 PM)fordobd Wrote:  uses  dialogys+ clip guided diagnostic interface

i have can clip..but i would like to know where does 12 volts in k line obd2 come from?ecu?upc?
29-08-2022, 16:12 PM,
Post: #6
RE: megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
ok,so update,we have all feeds to ecu,all earths are good..removed ecu and read it with flex boot mode with k line..so kline is good ,shouldnt i get connection with can clip?
30-08-2022, 15:27 PM,
Post: #7
RE: megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
diferent vin into ecu,,,,, try with another diagnostic tool
30-08-2022, 15:36 PM,
Post: #8
RE: megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
(30-08-2022, 15:27 PM)admiral Wrote:  diferent vin into ecu,,,,, try with another diagnostic tool

tried with kts,launch..tried with 3 upc..all the same..can clip says multiplex network error between ecu and upc..so we install new wires on can network and still the same..tomorrow we will try to swap ecu if we find spare onesmile
31-08-2022, 21:19 PM,
Post: #9
RE: SOLVED!megane 2 cabrio 1.9dci edc16c36 no communication with ecu ??
ecu was dead..everything works oksmilethanks all for helpsmile


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