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+--- Thread: CD400, in meriva B, mid-speed can-bus off, wont allow can learn (/showthread.php?tid=3832)
CD400, in meriva B, mid-speed can-bus off, wont allow can learn - gazz292 - 10:th-Apr-2018
Wondering if anyones had this before?
2011 meriva B (1.3 cdti) CD400 with GID,
always been getting the following code on the radio: U0074
The other 2 codes are for the IPC, as im still messing with it...
but i was getting that U0074 code when i only had an op-com for diagnosis, so it's not the clone tech2 giving a fake code, and i was getting it before i ever touched anything electrical in the car.
The Tech2 gives an option to do a can bus re-learn on most modules... it asks if ignition is on, i press the button to say it is, then i'm instructed to turn ignition off, a bar progresses across screen, told to turn ignition back on, procedure completed.
Except if i try that with the radio... it fails the second i press the soft key button to confirm the ignition is turned on, does the same if i've turned ignition off, Tech2 gives a low beep, and it says 'failed'
the multimedia module communicates fine, and i've done a can-bus relearn on all modules i can, the radio always refuses. the radio is working fine as far as i can tell.
had a look behind the radio, and there is a wire out... not sure where it's from tho... there's no empty terminal in the block, it's a shield that's loose... looks almost as if deliberately done:
That 'could' be the shield for the mid speed can bus i suppose??, and would explain why it says it's off... except i can actually communicate with the radio, i can do the speaker test from the Tech2, so it's talking to it somehow.
i know i want to replace the CD400 for a navi system sometime (anyone selling a navi950 for a good price, i want one) but i want to be sure that the car is wired fine before i do that, as i imagine i'll have a lot of wiring changes to make for that mod.
RE: CD400, in meriva B, mid-speed can-bus off, wont allow can learn - Rusty2009 - 28:th-Apr-2018
Have you tried attaching that lose wire to an earth and seeing if it'll go through then?
RE: CD400, in meriva B, mid-speed can-bus off, wont allow can learn - Rusty2009 - 28:th-Apr-2018
Hold on just looking at your pic of the plug the yellow wire in pin 1 should be in pin 2 and pin 2 should be in pin 3.
RE: CD400, in meriva B, mid-speed can-bus off, wont allow can learn - Jpbroad1970 - 28:th-Apr-2018
I have a shield like that floating around in mine, well its tucked in the loom sleaving
I would agree with rusty on the wiring too
it does look a sparse radio connector though just thinking out load as to how different the meriva radio wiring is if any