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Re: Mitsubishi/Citroen OBC trouble

Posted: Mon May 11, 2020 4:17 pm
by kiev
If the semiconductors in the waffle plate are okay, then replacing the snubber capacitors and the fuse in the MCU will usually get it working again.

If you can carefully remove the blue cap and test it to verify that it is bad, would be very useful for you to know. Maybe just heat the solder joint from the top and ease the part up, working a little on one leg and then the other, back and forth to ease the part up and out.

Even if some solder dripped down it couldn't hurt the extra hard epoxy coating of the waffle plate. Then you can just put a new one in and solder from the top. Careful not to crack the capacitor epoxy.

Re: Mitsubishi/Citroen OBC trouble

Posted: Tue May 26, 2020 10:15 am
by bigpete
Hi again, Kiev. This was a tough one... Put it all together, but still it doesn´t work. Just 1 second of sound from the fan when I put in the charger pistol in, after that no sound and no charger symbol. But strange enough, the yellow and the red warning light in the dash is gone. When I do the diagnostics it says charger fault. The fault code is: "vmd_dtc 00008 rex". I haven´t got a clue of what that is?

Today I managed to find a used OBC, but when I got it home I saw it was a different kind. It had no small "box" with wires on the top of the OBC and the wires was also a bit different. Also the coolant box was mounted so that it didn´t match the holes in the new one. My 2010/11 model has obviously a different kind than this OBC from 2014.

So, I am almost giving up here. Is there anything else I should try, you think?

Re: Mitsubishi/Citroen OBC trouble

Posted: Tue May 26, 2020 11:12 am
by kiev
[edit: Is it wired back up correctly--all the faston tabs back into the correct location? it is easy to get them on the wrong position.]

Were you able to check and verify that the semiconductors in the waffle plate were okay? i was waiting to hear back. If those are failed then the plate is bad and will need to be replaced.

Were you able to measure/check if the capacitor(s) were bad? Only replacing one may have blown thru the new one, so you should replace both of the little capacitors whenever you do one, just do them both with known-to-be-good. It is a small expense for the risk of failure.

Did you open the new 2014 box to see if it looks similar inside? There is versions without the little top box and the insides are nearly the same as before.

i'll go back and review your pictures.

Try to read out the EV-ECU DTCs, that is the main controller and should have top level DTCs.

Re: Mitsubishi/Citroen OBC trouble

Posted: Tue May 26, 2020 11:33 am
by kiev
bigpete wrote:Hi again Kiev.
Now I have replaced the MCU Fuse and soldered on a replacement for the snubber cap that was cracked. Result: The yellow fault symbol in the dashboard is gone, but i still have a fault code 0006 on my diagnose tool


i don't know where or how you are reading these codes, but OBC code 6 is an indication of "AC input voltage abnormal".

Has there been any accident or repairs that might have disturbed the cable from the chargge port to the OBC?Seems like it is not getting any AC voltage..?

Is cable connected properly? Do you have continuity thru the cable into the OBC (thru the little box on top?) there are fuses inside the little box also.

Re: Mitsubishi/Citroen OBC trouble

Posted: Tue May 26, 2020 2:41 pm
by bigpete
kiev wrote:[edit: Is it wired back up correctly--all the faston tabs back into the correct location? it is easy to get them on the wrong position.]

Were you able to check and verify that the semiconductors in the waffle plate were okay? i was waiting to hear back. If those are failed then the plate is bad and will need to be replaced.

Were you able to measure/check if the capacitor(s) were bad? Only replacing one may have blown thru the new one, so you should replace both of the little capacitors whenever you do one, just do them both with known-to-be-good. It is a small expense for the risk of failure.

Did you open the new 2014 box to see if it looks similar inside? There is versions without the little top box and the insides are nearly the same as before.

i'll go back and review your pictures.

Try to read out the EV-ECU DTCs, that is the main controller and should have top level DTCs.

I´m not capable of checking the semiconductors, Don´t know how to do that. Also didn´t manage to measure the old capasitors because they were ruined when i dismounted them. About the 2014 box, I need the coolant bottle and one of the wires that was mounted on this one. Have contacted the seller and see if he still got these parts.