Mini Countryman Series - Trouble in Paradise...Again!!
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- čas přidán 8. 09. 2024
- I spoke too soon after my last video, and the Mini has been playing up again.
I managed to source an OBD2 wifi adapter and get connected to the car, which gave me a number of issues to look at, a bunch of sensors showing bad data etc.
One of these was to do with the accelerator pedal, which on the Mini is a fly by wire arrangement, with 2 channels of output that are meant to mimic each other when all is well.
OBD2 showed that this was not the case, so after spending some time going back to first principles and finding some red flags, I was still left with a fault in the pedal.
Nothing left to do but crack it open and take a look!
Inside the pedal I found traces of some grit which looks to have caused the issue, and after cleaning and reassembly, at long last the issue might just be fixed.
So.... was all of my DPF hassles down to a faulty accelerator pedal?
We may never know... but as of today - tough wood - stuff is working, no errors , and my stress levels are dropping rapidly!
Nice job JB with the right tools you can solve a lot but with common sense you can solve more
Technology is such a wonderful thing ;)
Especially when a single grain of sand can bring down everything!!
multiple problems And not a single four letter word, you must like that love that mini
Not a single four letter word on the final cut! Lots left on the cutting room floor!
Usual story, we can build engines at Deere that will run 30000hrs and need only maybe a water pump, but it likely won't make it more than a few thousand before a failed sensor or a faulty electrical connection shuts the whole thing down!! Mechanical lacked performance but it had reliability in spades.
Yeah I hear you mate, a single grain of sand.... cause of all of that grief
Little sensor on the battery cable is a current flow sensor. Helps out with smart charging systems.
The rest of my rant is for the others not as skilled in electrikery as yourself.
When I used to get parachuted in to fix the unfixable - for you know the company. My 1st step for the weird was just what you are stepping through. I did leave everything intact and attached the DVOM (+) lead to battery negative post (not terminal) with the with (-) lead to roam free. Then fully load every accessory - engine running etc. Then touch on every ground point (terminal not the fastener) in the path for the issue part back to the battery and watch the dvom. Optimal is < .1v dc. That proves the ground can carry the full load without the ground circuit acting like a resistor. Ohmmeter testing grounds is fraught with issues due to the high impedance needed nowadays (old meters are deadly to electronics)
Not enough current to load the ground inner wires. If this all passes switch to the positive side with the same setup and test for drops between power feeds and the positive terminal. Power feeds should be within a .5v to the battery feed. If you have a voltage difference just sketch a resistor in your head and go find it.
The dvom voltage functions always shows difference (delta which is voltage - I.e, difference in potential) so I just pimp the concept and use the meter for what it does. Let the meter do the math....LOL. Any voltage drop on a ground is bad - but a smidge may be acceptable. Power feeds are a smidge more tolerant but not much.
With the electrical system fully loaded you get what is really going on under real conditions. The ghost issues disappear as you connect and disconnect.
Good work this week. Good solid approach - just sharing my approach to about everything. Works on AC and DC.
That was a nasty gremlin for sure. Diagnostic engineers were lazy on that fault flagging code. Should have popped like a bat signal. Glad you can maybe declare victory.
Thanks for cheering me along mate, it’s been 15 rounds with Tyson kind of experience for me, but now have a much better handle on this car so comfortable I can handle anything it throws down now...
Nice work JB. I just hate cars when problems come up!
Cam
this one has been 8 weeks of hell....
JB, don't drive the Mini out to the farm block.
It could be a loooong sloooow drive back.
I wonder if BMW engineers live in a dust free environment ???
Cheers Eric
Surprisingly even in limp mode, I was able to drive 100km/h, one of the trips out to bakers hill I did with the car after my DPF clean when picking up the Kanto Mill, I really feel confident now that all of the issues are addressed! Such a reliwf