Alfa Romeo Forum banner

KWP71 how to use to Connect to Airbag/ABS ECUs

49K views 150 replies 26 participants last post by  stevehayling  
#1 · (Edited)
156: KWP71 how to use to Connect to Airbag/ABS ECUs

HARDWARE:

To gain access to the diagnostic port 1st remove this panel:

Image


This is what the connector looks like:

Image


To jumper pin 7 [ engine ecu ] to pin 3 [ airbag ] you need to remove this connector:

Image


Using a paper-clip or 'earth' wire bridge out from 7 to 3 for Airbag:

Image


Re-insert the connector & plug in a Standard KKL interface:)

SOFTWARE DOWNLOADING:

To Obtain the KWP71 s/w you need to join the Unidiag forum:

UniDiag : UniDiag

Running the KWP71application

This is what the KWP71 Icon looks like, double Click on it:
Image


This is the 1st screen that appears:
Image


From a drop-down menu select the required port [ default is ALWAYS Com1 ]:
Image


Set the ECU address to 0x00:
Image


Select the KWP81 tick box:
Image


Open Comm Port:
Image


Start Comms:
Image


Idenification, shows 'wierd charcters' which is correct :eek:
Image


If no errors are present you get a screen like this:
Image


If erros are present it will give a read out with the codes in HEX.

Be sure to press STOP COMMS:
Image


Be sure to Press CLOSE PORT:
Image
 
#2 · (Edited)
#3 ·
For ABS there are few small differences:

1. Pin 7 needs ot be connected to pin 1

Using a paper-clip or 'earth' wire bridge out from 7 to 1 for ABS:

http://i275.photobucket.com/albums/jj289/alfenia20l/circuits-1/abs-7-1.jpg

ECU address is: 0x20

Prot Sub Type: AUTO

Image


ABS repsonse after OPEN PORT + START COMM has been pressed:

Image


ABS 'Read Fault' screen [ this is clear ]:

Image
 
#4 ·
hope it helps *some* of the members here to 'brave' it to use KWP71 for airbag or abs issues ...after all its free.:)
 
#5 · (Edited)
Thank you Service Enginee,

please excuse the question if its dumb!?:confused: But! is the principle the same for three pin port connection that i have in my P1 916 spider with the connector in the footwell?

Regards,

kARMA.

PS: I use the OBDII & 3 Pin cable thats advertised in your link to UniDiag.
 
#7 ·
Sorry I don't know how to connect to the ABS of a 3-pinned GTV.

If you are a membe rof Unidiag forum why not ask Sanders
 
#9 ·
#11 ·
black wire is 3, count 4 upwards is 7.

Normally the a red wire soldered to 7 but on my interface red goes to the switch common & then the N/c goes to 3 for AIRBAG & the n/o goes to 1 for ABS
 
#13 ·
pin 1 is for ABS, you may never need it

pin 3 is for the Airbag ecu .... does it have that?

Not not there might be a spare in another part of the connector that not sbeen used OR you could find a similar sized object, heat it & force it into the connector.

then sodler from 7 to 3
 
#15 ·
here is the pin out:


01. K-line ABS (ARS, ESP, TSR)
02.
03. K-line Airbag
04. Massa/Ground
05. Massa/Ground
06. B-CAN B-line
07. K-line Motor Management
08. K-line NetworkBodyComputer
09. K-line Stuurbekrachtiging/Power steering
10.
11.
12. K-line CruiseControl & Koplampen/Headlights
13. K-line BandenSpanning/Tyre pressure
14. B-CAN A-line
15. L-line NetworkBodyComputer
16. Voeding + 12Volt

move pin 10 or 11 to 1.
 
#19 ·
ImageShack - Image Hosting :: dsc03195ux4.jpg
missing pin 3 [ airbag ecu

ImageShack - Image Hosting :: dsc03196pk7.jpg
ImageShack - Image Hosting :: dsc03197hz3.jpg

connect pin 7 to pin 3 [ for airbag ]

connect pin 7 to pin 1 [ for abs ]

top LHS
1--2--3--4--5--6--7--8
9-10-11-12-13-14-15-16
Bottom LHS
 
#20 ·
read this ! a satisfied user of my cable in South Africa !
quote
Hi Dolf Just to let you know I connected to Alfadiag last night.ECU 3.1 EOBD. Also, for some reason, the demo would notconnect, I bought a license and the proper version had noproblem. Now I just need to work out what it is telling me. Good news is, no error codes came up Thanks again, will be in touch. Anotherhappy customer of the rarebear corporation. Cheers
unquote

no soldering needed ! and all pins are working !
 
#21 ·
yeah but can he connect to the abs system?

ME3.1 is the engine ecu, not airbag :eek:
 
#22 ·
as you look at the cars conector the layout is:

top LHS
1--2--3--4--5--6--7--8
9-10-11-12-13-14-15-16
Bottom LHS

keep this in mind when looking at the connector.

I've used my 2 interfaces in a Doblo-JTD, same diag port as in your 147 with any issues.

Kwp71 only goes as far as Com 8..... make sure to select Com POrt 1st

Did you OPEN PORT?

Did you select the correct options [ KWP81 & 0x00 ]

Did you Start Comms

if oyu want i cna call over to sort it for you, if oyu pay the airplane ticket
 
#23 ·
Draco13, maybe your car falls into the same category:

unidiag said:
The newer ABS ECUs (in e.g. 147) already use kwp2000, so
UniDiagKWP2000 can be used.

Here are some faultcodes for the ABS:

0x5200 FRH speed sensor, wiring error
0x5201 Front RH wheel speed sensor
0x5205 FLH speed sensor, wiring error
0x5206 Front LH wheel speed sensor
0x5210 RRH speed sensor, wiring error
0x5211 Rear RH wheel speed sensor
0x5215 RLH speed sensor, wiring error
0x5216 Rear LH wheel speed sensor
 
#24 ·
Draco13, hope get it sorted soon.
 
#25 ·
I think I could go to Ireland so you explain to me, I think it is a great excuse to go over there...

I think I may have a problem with the interface, I took pin 10 away and solder it to pin 1 but still cant connect.
I´m using the blue interface because I think the black one that came with my ELM327 doesn´t work with alfas
Do you think I should by another interface? :cry:
 
#27 ·
did you connect a wire form 7 to 1 also?

if not you need to do this as the default communication/wiring only goes to 7
 
#29 ·
who was it htat connected using KWp2000?

he posted a thread with 5216 error
 
#30 ·
#31 ·
you need to download the latest KWP2000 0-4-0-3

in that is the 'bosch' def file

Test_BoschABS57ASRTC
 
#32 ·
now!!!! hop to it!!!!:)