Home Technical Discussions MINI MINI Cooper, MINI Cooper S: 2002-2006

MINI MINI Cooper, MINI Cooper S: 2002-2006 Power steering pump.


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Last Post: Oct 31, 2013 11:36 AM Last Post By: creekman
tacking

Posts: 6
Registered: 01/11/08
Power steering pump.
Posted: Jan 11, 2008 5:35 PM
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I've rewired my 2002 S 100%, but the only thing that eludes me is wiring up the electric power steering pump. I just need it to work, power up. I gather we have a yellow wire that goes to the alt??
Please help. This is about the only wiring schismatic that fails in the Bentley.

Kudos to this manual as it guided me very well throughout the rewiring job.
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 13, 2008 2:33 PM   in response to: tacking in response to: tacking
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Attachment ps.jpg (64.6 KB)
Hi,
The yellow wire does go the alternator.

Brown is chasis ground, (terminal 1 of connector x13441).
Red goes to fuse fl4, (terminal 2 of connector x13441).

Green/white goes to fuse f39, (terminal 1 of connector x6975).

Yellow goes to alternator circuit, (terminal 2 of connector x6975 It splices with the black/yellow off of terminal 1 at the alternator.

Violet/white is the data line. It is terminal 3 of connector x6975

Nick

tacking

Posts: 6
Registered: 01/11/08
Re: Power steering pump.
Posted: Jan 13, 2008 6:23 PM   in response to: Nick Czerula in response to: Nick Czerula
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Nick, thanks a bunch for this reply.

Where does that Data wire end up? ECU? If so, what plug plug and pin number?
Is this the wire that adjust speed of pump?

If you do know all of this you would be of great help to me here. This is a race car and as I say, the only thing that has eluded me.
I'm in CT, so again, if you understand this stuff then maybe we could talk.

Thanks!

Message was edited by: tacking

Message was edited by: tacking

Charlie

Posts: 4,776
Registered: 12/09/03
Re: Power steering pump.
Posted: Jan 13, 2008 6:34 PM   in response to: Nick Czerula in response to: Nick Czerula
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Thanks for pitching in Nick.
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 13, 2008 6:39 PM   in response to: tacking in response to: tacking
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The data line is for diagnostics only. It splices into the vio/wht out of the dme,(pins 36/38) and ends up at pin 7 on the 16 pin data link connector. You could run it directly to the vio/wht at pin 7 of the DLC.

The pump knows what to produce by driver demand. Movement of the steering changes the pressure inside the pump, this activates the pump according to what is needed. It is all internally controlled by the steering module. The module is built into to the pump.

Any other question you have feel free to ask.

Nick

Message was edited by: Nick Czerula

BTW. The car looks great!

tacking

Posts: 6
Registered: 01/11/08
Re: Power steering pump.
Posted: Jan 13, 2008 8:28 PM   in response to: Nick Czerula in response to: Nick Czerula
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Nick, GREAT stuff, thanks!
This sounds better all the time and puts me back on track.
Now, what I'd like to do is somehow just fool all the small wires and to just be able to power the pump on and off through the large power wires, via a 200 amp breaker switch. Can I do this?

Thanks again.
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 13, 2008 9:09 PM   in response to: tacking in response to: tacking
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You would have to make internal modifications to the pump. Have you looked into an after market electro-hydraulic pump?

I will look into what can be done to the pump, (if anything) you have and get back to you.
tacking

Posts: 6
Registered: 01/11/08
Re: Power steering pump.
Posted: Jan 14, 2008 8:07 AM   in response to: Nick Czerula in response to: Nick Czerula
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Thanks Nick,

Don't bother posting here, unless others find it informitive. I'll call you today (monday) SNOW DAY!! =(
rough68fish

Posts: 5
Registered: 01/14/08
Re: Power steering pump.
Posted: Jan 14, 2008 3:25 PM   in response to: tacking in response to: tacking
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Please continue to publish here. I have a 2003 S with a "bad pump" I was about to take mine a part and see if I could fix it instead of paying $600 for a new one.

I would love to understand better what the different wire are doing.
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 14, 2008 10:30 PM   in response to: rough68fish in response to: rough68fish
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What part of your pump failed? The electric? (most common I see)
tacking

Posts: 6
Registered: 01/11/08
Re: Power steering pump.
Posted: Jan 19, 2008 5:50 PM   in response to: Nick Czerula in response to: Nick Czerula
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Big thanks to Nick. My PS is up and running.
Thanks Nick.
LilMissMini

Posts: 2
Registered: 01/20/08
Re: Power steering pump.
Posted: Jan 20, 2008 9:25 PM   in response to: tacking in response to: tacking
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Not particularily just the power steering pump, but upon bringing my mini in to be looked at after realizing I was leaking power steering fluid the mechanic told me I would need to replace the entire power steering rack as there is no way to repair this. Does anyone know anything further about this, or has anyone dealt with the same problem? Needless to say I am not a happy camper, with only 60,000 miles on the vehicle and now looking at 1400.00 in service...I'll take any advice I can get! Thanks!
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 20, 2008 9:34 PM   in response to: LilMissMini in response to: LilMissMini
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Hello,
The power steering rack is replaced as a unit. The rack is not a serviceable part.
If it is leaking you will have to replace the entire unit.

Nick

LilMissMini

Posts: 2
Registered: 01/20/08
Re: Power steering pump.
Posted: Jan 20, 2008 9:37 PM   in response to: Nick Czerula in response to: Nick Czerula
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Thanks for replying so fast...Yea Im definately not thrilled about this. I have found a remanufactured power steering rack online, but Im a lil hesitant to purchase it...
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 20, 2008 9:48 PM   in response to: LilMissMini in response to: LilMissMini
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If the reman unit is from a reputible rebuilder that could be a good option.

Also check with your repair shop to see how they feel about customer supplied parts. If the part fails, (due to poor quality) you will end up paying to have it installed again.

If you use the part they have quoted you, (the shop) I would assume it will have a warranty. Little safer IMO.
FlyTheCoop

Posts: 87
Registered: 04/24/06
Re: Power steering pump.
Posted: Jan 25, 2008 11:48 AM   in response to: Nick Czerula in response to: Nick Czerula
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I am hoping this gets to you in time!. My power steering reservoir is leaking at the one of the two hoses (front hose)attached at the bottom of the reservoir tank. The other end of the hose that leaks is attached to the input side of the pump, and is also leaking. The fluid runs down the hose and can be seen all over the power steering pump. At first it is hard to tell where it is coming from, so I degreased and washed everything clean and checked it two day later. That hose need to be replaced, the part is very easy to get to and should not take any more that 15min. The part number is 32416754498 as shown on realoem.com

This may very well be the source of your problem.
Hope this helps and let us know how you make out.
macaurt

Posts: 3
Registered: 01/31/08
Re: Power steering pump.
Posted: Jan 31, 2008 1:25 AM   in response to: Nick Czerula in response to: Nick Czerula
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I had modify the mini cooper S as a race car,I want to
control the power steering pump as sample.I want to rewiring,but my car change the ECU to Motec.So the three
wire how to connect?Or needs to modify the pump.
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 31, 2008 2:47 PM   in response to: macaurt in response to: macaurt
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Are you asking how to connect the ps pump to run on its own?

If you look up a few posts I described where the wires go. I can go more in to detail if need be.

Nick

macaurt

Posts: 3
Registered: 01/31/08
Re: Power steering pump.
Posted: Jan 31, 2008 9:55 PM   in response to: Nick Czerula in response to: Nick Czerula
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Hi,Yes,I want more detail.Because all the car wiring will be take off,I want to connect the pump as sample as .Do you had any information for it.the three wiring connect,It is one is 12vpower(from fuse),Ground,???
Can I just connect 2 wire?
please let me know.
best regards
LEE
Nick Czerula

Posts: 270
Registered: 10/16/06
Re: Power steering pump.
Posted: Jan 31, 2008 10:06 PM   in response to: macaurt in response to: macaurt
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Hello Lee,
Here are the wires you need to connect and to where.

Brown is chasis ground, (terminal 1 of connector x13441).
This goes to the chassis of your vehicle.

Red goes to fuse fl4, (terminal 2 of connector x13441).
This goes to a 100 amp fuse.

Green/white goes to fuse f39, (terminal 1 of connector x6975). This goes to an ignition fed fuse rated at 15 amps.

Yellow goes to alternator circuit, (terminal 2 of connector x6975 It splices with the black/yellow off of terminal 1 at the alternator. This one must splice into you alternator as described above.
Violet/white is the data line. It is terminal 3 of connector x6975. You can leave this one out.


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