R56 :: Hatch Talk (2007+) MINI Cooper and Cooper S (R56) hatchback discussion.
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R56 Electrical diagram

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Old Mar 28, 2022 | 04:18 PM
  #1  
techman1's Avatar
techman1
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2nd Gear
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Electrical diagram

Greetings all Mini maniacs!

I am working on the family fun car. My daughter was driving, hit a pothole, and rough running started then it died.

Symptoms:
It will crank, no start, no sputter, not even try to catch. Windows will not work via switch, nor will the sunroof move. Interesting, the window will still move as normal slightly when opening and closing the door.

Looking for a wiring diagram to find what is in common with the two systems. Any pointers to online access?
 
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Old Mar 28, 2022 | 04:28 PM
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oldbrokenwind's Avatar
oldbrokenwind
6th Gear
Joined: Mar 2011
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From: Northern NV
Highly recommend a Bentley manual --- lotsa good wiring diagrams. Don't know about online access.
 
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Old Mar 30, 2022 | 05:55 AM
  #3  
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techman1
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Update, partial success.

When we purchased the car a few years ago, I also purchased a Foxwell 510 (I believe that is the correct model, at work now)

I was able to use it to reset the CAS. This allowed the windows to start working again! Too late for more work.
I have checked plug coils, getting voltage, sprayed starter fluid into hose out of turbo, and the car sputtered. If I can get fuel to flow it will start.
More information- I had removed the JBE and checked the K96 relay. Possible cracks at the solder of one leg, so I flowed it again. Looks better.

If there is still no pump action from the low pressure pump, I now have an adapter for my fuel gauge. I will measure the supply from LPFP where it enters the HPFP.
Still need to know: Where does the K96 relay get its signal to energize?
It is possible it comes from the CAS, and ours is faulty. Don't really want to go down that road, but will if needed.

 
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Old Mar 30, 2022 | 09:00 AM
  #4  
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techman1
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I believe I found a schematic of the fuel pump relay, and If I am reading it correctly, it is switched by incoming wire 17, from the DME, or does it turn on 30G relay, which in turn switches K96?

 
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Old May 27, 2022 | 06:46 AM
  #5  
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techman1
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2nd Gear
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To close this out,

The crank no start issue was resolved with a new ECU - cloned. All works now
 
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