The Z3 Diagnostics Thread: Instructions, Experiences, Discussions, Experimentation

[Z3eattle]

You are welcome.

For your problem, you should not need to bleed the ABS pump, unless you let the lines run dry completely. Otherwise the old fluid will pass through the pump with a normal bleed. I would look into the age of your rubber brake lines. When they balloon out, the pedal gets real mushy. Replace with DOT approved braided lines and do a good bleed.

If you got air into the system...


...you have come up with a good question. I have searched what a usual ABS pump does in a bleed routine, and haven't yet come up with a clear answer. It would be good to know. I see some pumps have an extra chamber that stays closed until the valves are actuated. I wonder if ours (we have at least 3 different kinds installed, though) are like this.

Possibly something like, run pump, open intake valve, run pump, open exhaust valve, run pump, close both?


If we get a clear answer, I can build a Tool32 test file that will do the complete routine automatically with one click, for each wheel.

Thanks for the reply. I had rebuilt all 4 calipers and swapped OEM for SS lines, new oem brembo rotors and hawk hp+ pads... used vacuum seals but nevertheless introduced at least some amount of air into the system. I've bled about 3 qts using traditional methods resulting in a squishy pedal compared to before opening the system. Note that I bedded pads too. Cycling the abs via INPA seems to have helped get it from 75% to 85% perceived good pedal feel but as mentioned I was shooting in the dark as far as procedure. I used a Motive pressure bleeder and performed something similar to your suggestion: run pump > intake > exhaust > run pump. I realize now I had the bleed screw open during the entire procedure... I'm guessing I should have had this closed during anything but the pump stage??

I will report back with any good information I find or my own anecdotal procedure if I find something that works.

[Muzz258]

Hi Z3eattle

This link may help with the ABS http://www.aa1car.com/library/abs_teves_mk20.htm

My flush procedure includes:
- setting up the power bleeder
- removing the plug on the brake switch so the ABS thinks the brake peddle is pressed
- Opening the caliber bleed valve
- INPA to activate the 12 second ABS run while fluid is running out of the caliber.
- close the caliber bleed valve.

Hope this helps

Muzz

[Ysi]

Hi,
Recently, I installed this soft. During installation I got few different messages, but when I tried to open after finishing it looks like installed.
I tried to connect with car, and got interesting message and no connection.

Message about connection.jpg

Maybe problem with cable. But I used it few month ago with other version of INPA.
How to solve this problem?

[328 Power 04]

Check COM ports, as described in the Troubleshooting Connections pdf

[wallball]

My air bag light is on and its been on since I bought the car in September 2015. I have INPA loaded in my laptop and went through the process a few times trying to clear it and turn it off, to no avail. When I check codes, many are there in memory, none are active. I've done the Erase a few times but the codes remain in memory. So I'm thinking that there might have been an airbag deployment at some time, and I do not have to tools to clear the deployment memory(?) I can't tell from the INPA information if there has been a deployment.

328 Power, thanks for organizing all of this information. It has been extremely useful to me. INPA is a very powerful tool.

Here are the codes. Thanks
airbag error codes - 1.jpgairbag error codes - 2.jpg

[328 Power 04]

That error 240 "internal ECU error" is a hardware fault within the module. It needs to be replaced. Quite common issue with 1999-2001 airbag modules. It will not allow code clearing.

I went through this with my 2000 roadster, and it has been a similar problem for some people lately. I chose to put a used one in, and it's working fine.
It needs to be replaced with one of the same part number or new one with the superseding part number, which has been improved by BMW.

[wallball]

That error 240 "internal ECU error" is a hardware fault within the module. It needs to be replaced. Quite common issue with 1999-2001 airbag modules. It will not allow code clearing.

I went through this with my 2000 roadster, and it has been a similar problem for some people lately. I chose to put a used one in, and it's working fine.
It needs to be replaced with one of the same part number or new one with the superseding part number, which has been improved by BMW.

Good to know, thanks. Any idea what the PN is? And where is it located? I looked at RealOEM but couldn't find it.

[328 Power 04]

Good to know, thanks. Any idea what the PN is? And where is it located? I looked at RealOEM but couldn't find it.

http://www.realoem.com/bmw/enUS/show...diagId=65_1095

My original one was 65778386192, (Temic MRSZ3, v2.5). I replaced it with the same part number from a 2000 Z3M with the same options as mine (door airbags, etc). If the car has different options, it will have to be coded. If new from dealer, it will have to be coded. Coding is very easy, I have put instructions, linked in post 1.

The new replacement part number is 65776908896 (Temic MRSZ3, v3.0).


Module itself is located on the body under the center console, mounted to the transmission channel. It can be reached by removing just glovebox and/or driver's knee panel and worked from the sides.

[Ysi]

I read troubleshooting file and check set up on computer. Everything is OK.
I check my K+ DCAN cable regarding pin#8, no connection inside.
I have both black dots shows that connection established, but INPA can't read anything.
Therefore what else????

[328 Power 04]

Hmm. Is the K+DCAN cable a white main board one? There are two versions, a green board and a white.

(Edit, it was late at night)

Having the black dots means the connection from computer to cable is fine... So what is left is to know what car we are dealing with.
I see up in the screenshot earlier that you are trying to connect to a diesel DME. 335d, 535d, X5 35d? What month and year?

If your car is pre CANBUS (02/2007 and older) you need to bridge pins 7&8 together to have access to both K-lines. If not, they should be left unbridged.

[Ysi]

Hmm. Is the K+DCAN cable a white main board one? There are two versions, a green board and a white.

(Edit, it was late at night)

Having the black dots means the connection from computer to cable is fine... So what is left is to know what car we are dealing with.
I see up in the screenshot earlier that you are trying to connect to a diesel DME. 335d, 535d, X5 35d? What month and year?

If your car is pre CANBUS (02/2007 and older) you need to bridge pins 7&8 together to have access to both K-lines. If not, they should be left unbridged.

1. The cable K+DCAN from One-Stop-Electronics with green board and version 3.0 software. Pin# 8 does not connected.
2. I tried to connect with:
- X5 35d E70 11/2009
- 328 E90 10/2008
Also I have in family 525 E39 09/2001, 335 E90 10/2010 and 535 F10 3/2011. Our family prefer to stick with one brand.
Currently, I need urgently enter coding for X5 diesel after replacement injector #6.

[328 Power 04]

What setting is the cable set to in DCAN Utility?

Also the cable latency is set to 1ms right?
I have been using this pack with a bunch of BMWs including a 2011 X5 35d without problems.

May have to get onto remote desktop (Teamviewer) to troubleshoot.

[Ysi]

What setting is the cable set to in DCAN Utility?

Also the cable latency is set to 1ms right? Yes latency is 1ms
I have been using this pack with a bunch of BMWs including a 2011 X5 35d without problems.

May have to get onto remote desktop (Teamviewer) to troubleshoot.

Yes indeed, need just arrange time, better for morning weekend.

[328 Power 04]

This weekend may be a bit busy for me, (PM me with availability anyways), if not, next weekend I am free.

[328 Power 04]

Added a customized TIS installer with link in first post.

[Beemerman1967]

@328 Power 04
Got a problem with my DSC. As I'm driving I'll feel the right front brake pulsate and the DSC and brake light come on and stay on in yellow. It doesn't happen all the time. It's very sporadic. Can the diagnosis software tell me what the problem is, or have you heard of this happening to anyone else?

[328 Power 04]

Yes, read the error that is stored in the "DSC e46" module on your Z3.

If I remember correctly, it was one of the lateral accel sensors or yaw rate sensor.

[Beemerman1967]

Isn't that part really expensive?

[328 Power 04]

Yes, the yaw sensor is. If ever needed, get a good used one from any E46.

[wallball]

http://www.realoem.com/bmw/enUS/show...diagId=65_1095

My original one was 65778386192, (Temic MRSZ3, v2.5). I replaced it with the same part number from a 2000 Z3M with the same options as mine (door airbags, etc). If the car has different options, it will have to be coded. If new from dealer, it will have to be coded. Coding is very easy, I have put instructions, linked in post 1.

The new replacement part number is 65776908896 (Temic MRSZ3, v3.0).

Module itself is located on the body under the center console, mounted to the transmission channel. It can be reached by removing just glovebox and/or driver's knee panel and worked from the sides.

328 Power, I assume that since the main module has a fault, that the air bag system is not working: correct? I found a used one with the original PN on Car-Parts for $100, and doubt there would be any easy way to tell if its still good, so it's either a $100 dice throw, or ~ $500 for a new module. Damn.

[328 Power 04]

Correct, airbags will not function while light is on, especially for internal ecu fault.

Only real way to tell if it works is by plugging it in and clearing codes. I bought mine from a member here and it was easy to trust him.

[Kac309]

Hello,

I just bought the Windows XP laptop with FTDI OBD cable. I'm trying to use this setup with my 2005 E46 without any luck. There is no connection when I'm trying to use INPA. I just want to reset the steering angel sensor after the 4 wheels alignment.

Cable is connected to port 3, tools are setup to port 3 as well.

My cable look like this:
http://imgur.com/a/UDbUL

I did everything like in the manual. The only thing that is not working on XP is Patheditor.exe .

Can somebody help me with this?

[328 Power 04]

Bridge pins 7&8 for your car.

[Kac309]

Can I make a small jumper or better idea is to solder it?

Edit:
OK the jumper is working and I can connect with my car and INPA. My steering angle sensor is about 5.80 degrees off and I have an error 5E40 - steering angle sensor signal not plausible, offset. The problem is I can't run compensation routine to reset my SAS because there is no such option in Chassis->DSC MK60. Am I doing something wrong?

[328 Power 04]

Alternate way (a little more advanced):

Connect to car, steering straight, flat ground.
Open Tool32, go to File, Load SGBD, Group File.
Scroll to DSC_MK60.prg file, click Open.
To confirm you are connected, click "ident" job, and file menu: Job > Run Job Once only. You will get data from your DSC.

Now, find "lenkwinkel_dsc_abgleichen" job on the list, and Run Job Once Only. You should be greeted by Status OKAY, if it worked.

Then exit everything, and clear errors.