iveco daily 3.0 2019 non comunnication edc

13jurek13 · Post by **13jurek13** » Wed Jun 30, 2021 7:52 pm

hello gays, please help mi fixing this car. Problem is i this so in CAN comunnication.
all drivers are detected and I see errors, I can't just see the edc17c49 motor driver.
I did a measurement of 1 in the middle of the system in the plug (telma jumper) seems good. 2 measurement in the driver plug and here is already can H and can L are the same. What's happening? voltage 30,15 is good , ground is ok. you have ideas.

liviu2004 · Post by **liviu2004** » Wed Jun 30, 2021 8:10 pm

For the motor driver to talk, it needs all plus and minus present. Is this checked? Wires load tested?

13jurek13 · Post by **13jurek13** » Wed Jun 30, 2021 8:45 pm

I checked are OK .pin 1,3,5 termin 30
Pin 54 terminal 15
Ground its are on 2,4,6
Its all? Maybe its are more pin with terminal

13jurek13 · Post by **13jurek13** » Fri Jul 02, 2021 7:06 pm

I eliminated problems with magistarala. the waves are good everywhere. but the problem remained with the lack of communication. the question is whether immo is able to disconnect the driver in this way? because in the controller. abs are two mistakes. no edc communication and no immo communication.
I am asking for advice.

Post by **ben.martins** » Mon Jul 05, 2021 11:43 am

Hello 13jurek13,

Thank you for your post. I think there are a lot more questions than answers at this stage of the diagnosis. The EWD image you have supplied is a little confusing to say the least as there are multiple connections the the CAN wiring between the ABS, ECM, ESV1 (which I think is transmission) and ZF 8HP (also a transmission).

When dealing with network issues I often like to draw out the connections as wiring diagrams contain everything and you then need to work out if your vehicle has certain features fitted such as a retarder, which gearbox does it have, aftertreatment systems etc. If you could get us either a better diagram or the key that tells us the model specific details and then let us know what the vehicle you are working on has.

As the network appears to follow the J1939 format it might be of interest to take a look at the decoder in PS7 dedicated for this protocol. It could help us establish what's on and offline topic22615.html.

When measuring CAN, keep an eye on your sample rate at longer times. With 10s/div across the screen there will be huge amount of data and despite having 50MS selected you only have 500ks/s which is resulting in a lot of aliasing making decoding difficult, if at all possible. Take a look at the serial decoding guided test as we've selected the time and samples in order to get a decent capture from a 500kBaud network. Coupled with the J1939 decoder we can see if the engine ECM is even awake or even on the network for the other ECU's to see it. Providing power's and grounds are good, then we have to assume the device is awake. Proving that is but not visible to other ECU's is more difficult.

Kind regards

Ben

victor2k · Post by **victor2k** » Mon Jul 05, 2021 12:58 pm

Hello,
With the battery disconnected what value of resistence you can measure in DLC between 6 and 14?With EDC17 in network and unplugged?If the value will change from 60 to 120 ohm then your ECU is faulty or without supply.Do you know the location of 61126 resistor?
Best regards

13jurek13 · Post by **13jurek13** » Thu Jul 08, 2021 10:25 am

Thank you for your interest in the topic.
in the attachment a sample of the already good bus.
the car is from 2019. euro 6 engine. with internal buses for eco devices. automatic gearbox.
bus resistance when it sleeps 60ohm, driver disconnected 120 ohm. I changed the driver to a new one, the problem remained.
I will be grateful for the hints.

13jurek13 · Post by **13jurek13** » Thu Jul 08, 2021 4:43 pm

I have too much mileage to paste, but the photo with ID shows.
Can immo disconnect ecu in some way? tomorrow I will try to remove immo from the driver.

victor2k · Post by **victor2k** » Fri Jul 09, 2021 4:02 am

Hello,
Immo can't block the ECU communication,try to connect at A24/A25 your CAN decoder only(without AT,ABS,BC,...) to see some CAN activity,also please check if on A28 the main relay is turned on by ECU when ignition is ON.What tool was used for diagnose?Try to diagnose only your ECU on A24/A25,with Bosch KTS ,Autocom you ca do this ,in the attachment is the supply for ECU,plase check the supply with ECU connected.
Best regards

13jurek13 · Post by **13jurek13** » Fri Jul 09, 2021 7:08 pm

good morning, the controller controls about 10 relays and all are controlled. (I have the iveco diagram)
however, I checked CAN eco for NOx and there is a problem in the network (attachment). Immo off done .ECU changed
gutmann hella diagnoscope, checked errors in ABS, -no communication with the ECU, the counter is the same.
ECU connection failed.
whether CAN NOx can block EDC?
3 attachments with pico automatic decoding CAN
1.CAN with ECU
2.CAN without ECU
3. CAN eco nox
4. CAN directly cut ,isolated ECU

PicoScopes
& kits

For vehicle manufacturers

EV kits and
accessories

Noise, Vibration and Balancing

Milliohm tester

Pressure sensors

Current clamps

Breakout
leads/boxes

Accessories

Automotive Forum