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DNA not working

6.2K views 12 replies 5 participants last post by  MaccaTVR  
#1 ·
Hi,

Looking for some help.

2011 Mito Cloverleaf 170

Over the past few weeks DNA mode does not work at all. Cannot change to Dynamic or All Weather. It's as if the switch is dead.

However whenever the cars start/stop actually works (very rarely) the DNA switch works when the engine is off - can change to D and A, however whenever the engine starts again it just goes back to Normal and cannot change again. Not sure if this can help narrow down the problem.

I have an OBD scanner as well as the yellow adapter and AlfaOBD to check for codes.

I have done a scan on various different ECUS and this is what has come back.

SUSPENSION
C1037 - Front right valve, open circuit, error present.

BODY COMPUTER
B1067 - Dynamic control selector on CAN, error present.
B1074 - PROXI Configuration control, configuration failed, error present
B1047 - LIN Serial line, error intermittent

RADIO
U0140 - No communication with body computer, no signal / missing message

I do know that some of these faults existed before anyway as I've upgraded the radio from the original CD player to the newer touchscreen uconnect model which unfortunately meant a flashing odometer.

Anyway hoping that someone has experienced this before and maybe know the first things to check for.

Thanks!
 
#5 ·
So I managed to clear the suspension codes, then started the car right away. Successfully managed to change DNA modes again... however after a minute it must of sensed the fault again with the suspension then DNA stopped working again. I checked the plug today and all seemed fine. Not a cheap fix for a new shock absorber!
 
#13 ·
PROBLEM SOLVED

Thanks for the Italian Manual - I tried to find this but couldn't - where can I find other manuals like this?

Anyway the issue has now been resolved, so for anyone else having issues read on.

I decided to test the wiring to the front right shock by running length of wire from the plug and connecting it into the rear shock absorber. Scanning for faults the only fault that appeared now was right rear valve open circuit - which proves that the wiring to the front right shock is fine, otherwise that fault should of still been present.

This then made me believe that the shock absorber is at fault and will need replaced at nearly ÂŁ500!

BUT upon putting everything back together I noticed an issue with the two small connector pins inside the front shock - one was noticeably shorter than the other - my guess is maybe when it was last unplugged and plugged back in, the pins never lined up correctly with the holes on the plug and actually just pushed the pin further back and thus not making a proper connection inside the plug.

I then tested this manually by connecting electrical bullet connectors to each of the pins inside the shock absorber, then running wire to each of the holes in the plug to ensure there was a proper connection - and problem solved! Now it's all heat shrunk together - zero faults and DNA is working sweet again!