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KDFI Wideband lambda Red led flashing Fault

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KCPpieter
Beiträge: 17
Registriert: Do Aug 27, 2015 8:55 am

KDFI Wideband lambda Red led flashing Fault

#1 Beitragvon KCPpieter » Do Aug 27, 2015 9:10 am

Hi,


I have a problem with the internal wideband from KDFI, its not working,
i meassure some stuff out, and on white or grey i am getting 13,5Volts. and everything is connected as it should.
i noticed that KDFI is using the green wire as well, but in the LSU 4.2 there is no connection for it ??
when i use the same LSU 4.2 on a innovate tool, it works no problems. amperage of heating up is 1.7 going to 0.8ampere.
so sensor is OK, wirring is OK, voltage looks OK.

Do's anybody have the same problem with this Wideband drivers in the KDFI units ?
i read that the wideband controller should have 4 Amperage but the complete KDFI is fused on 2-4 Amps on a ignition +15wire of the ignition lock.
when measured the current isn't above 2.2Ampere with any of my wideband tools

https://www.youtube.com/watch?v=fVGEIf_lKqE&feature=youtu.be

Any idea's are weclome.

i found out KDFI has the CJ125 RXD and CJ125TXD line coming out, just need to figure out how i need to communicate with the wideband controller chip.. how the pinout is from the RS232 and what programme i need...

KCPpieter
Beiträge: 17
Registriert: Do Aug 27, 2015 8:55 am

Re: KDFI Wideband lambda Red led flashing Fault

#2 Beitragvon KCPpieter » Do Aug 27, 2015 9:24 am

I found all the info about the lambda controller, But no idea what file i need, for read out the unit.


http://breitband-lambda.de/download.html

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Alfagta
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Re: KDFI Wideband lambda Red led flashing Fault

#3 Beitragvon Alfagta » Do Aug 27, 2015 9:57 am

You have to connect the CJ125 rs232 interface to the pc.
There is no program available for this, just use hyper terminal or similar.


Which kdfi model do you have?
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KCPpieter
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Re: KDFI Wideband lambda Red led flashing Fault

#4 Beitragvon KCPpieter » Do Aug 27, 2015 11:15 am

KDFI 1.4 cinch, i got a basic board as well.

Can i use a RS232 to usb cable ? and what wire needs to what pin ?

like this Pin 2 RXD Pin 3 TXD Pin 5 GND ?

Can't get the communication to work...

i can read or write a word german.. Sorry :oops:
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Re: KDFI Wideband lambda Red led flashing Fault

#5 Beitragvon Alfagta » Do Aug 27, 2015 11:21 am

Are the dip switches 5 and 6 at the on position?
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KCPpieter
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Re: KDFI Wideband lambda Red led flashing Fault

#6 Beitragvon KCPpieter » Do Aug 27, 2015 12:07 pm

Alfagta hat geschrieben:Are the dip switches 5 and 6 at the on position?


yes.

Did you look at video ?

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Re: KDFI Wideband lambda Red led flashing Fault

#7 Beitragvon Alfagta » Do Aug 27, 2015 1:06 pm

Yes,

you would also need a TTL<->RS232 adapter because the rxd and txd pins have TTL level.
How is your LSU4.2 connected to the kdfi?

Colors and Pins at the LSU 4.2 connector
Black - Pin 1
Green - Pin 2
Grey - Pin 3
White - Pin 4
Yellow - Pin 5
Red - Pin 6
so there is a green cable....
The green cable is the trim resistor which is fitted by bosch for finetuning.
The sensore does have the green cable, but the connector have it and the connection cable to the kdfi need it.
Wer aufhört besser zu werden hat aufgehört gut zu sein
Alfa 156 GTA
Alfa 75 Race Car MS III
Alfa 164 V6 Turbo
Test MS II
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KCPpieter
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Registriert: Do Aug 27, 2015 8:55 am

Re: KDFI Wideband lambda Red led flashing Fault

#8 Beitragvon KCPpieter » Do Aug 27, 2015 1:31 pm

Alfagta hat geschrieben:Yes,

you would also need a TTL<->RS232 adapter because the rxd and txd pins have TTL level.
How is your LSU4.2 connected to the kdfi?

Colors and Pins at the LSU 4.2 connector
Black - Pin 1
Green - Pin 2
Grey - Pin 3
White - Pin 4
Yellow - Pin 5
Red - Pin 6
so there is a green cable....
The green cable is the trim resistor which is fitted by bosch for finetuning.
The sensore does have the green cable, but the connector have it and the connection cable to the kdfi need it.




Hi,

thanks i got the cable correct i am sure.

https://www.antratek.nl/rs232-to-ttl-converter-module

is this usable, going to order now.

KCPpieter
Beiträge: 17
Registriert: Do Aug 27, 2015 8:55 am

Re: KDFI Wideband lambda Red led flashing Fault

#9 Beitragvon KCPpieter » Do Aug 27, 2015 1:33 pm

Can i use one of these ?

usb to serieel TTL ?

https://www.antratek.nl/adapters/usb/usb-ttl-serieel

already bought these :
https://www.antratek.nl/ftdi-basic-breakout-5v


but next time i would go for this board TTL-232R-5V-PCB from FTDI

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Re: KDFI Wideband lambda Red led flashing Fault

#10 Beitragvon Alfagta » Do Aug 27, 2015 1:54 pm

Yes that convertor will work.

You have the cable correct now and same issue?
Wer aufhört besser zu werden hat aufgehört gut zu sein
Alfa 156 GTA
Alfa 75 Race Car MS III
Alfa 164 V6 Turbo
Test MS II
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MLog View V4.3.30 Registered
MLog View HD V4.3.30 Registered

KCPpieter
Beiträge: 17
Registriert: Do Aug 27, 2015 8:55 am

Re: KDFI Wideband lambda Red led flashing Fault

#11 Beitragvon KCPpieter » Do Aug 27, 2015 9:19 pm

Alfagta hat geschrieben:Yes that convertor will work.

You have the cable correct now and same issue?


i had the cable correct. everything is good. so we will see tomorrow when i got the converter :-)
hopefully i can read it out correct.
tested 3 other daughterboard of cars i had around the shop. all the same.

KCPpieter
Beiträge: 17
Registriert: Do Aug 27, 2015 8:55 am

Re: KDFI Wideband lambda Red led flashing Fault

#12 Beitragvon KCPpieter » Mo Aug 31, 2015 2:13 pm

Hi,

i got the Circuit in today for USB to Serieel TTL,
works great !

But now....

when i press connect it keeps rolling in data...

see this movie :

https://www.youtube.com/watch?v=A2c1CW3snvc

Bastigb10
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Re: KDFI Wideband lambda Red led flashing Fault

#13 Beitragvon Bastigb10 » Mo Aug 31, 2015 4:29 pm

Hi Pieter,

the CJ125 throws the error "240". "255" means everything is OK, everything else means nothing good :roll:

The error in your case should be a shortcircuit to ground on the sensorlines "Virtual Ground" (yellow) and "Nernstvoltage" (black). Please check this first.

Than: You meantioned that there is no green line on your sensor. Thats OK :wink:
But: There is a calibration resistor build into the sensors connector. So you have five cables from sensor to connector and than you need six cables from the connector to ECU. Did you do so?

Best Regards
Sebastian
Sebastian Knödler Technologie
http://www.breitband-lambda.de

KCPpieter
Beiträge: 17
Registriert: Do Aug 27, 2015 8:55 am

Re: KDFI Wideband lambda Red led flashing Fault

#14 Beitragvon KCPpieter » Mo Aug 31, 2015 8:23 pm

Bastigb10 hat geschrieben:Hi ....
Best Regards
Sebastian


Hi Sebastian, thanks for helping out, i will check tomorrow , i have a M50Tu engine running with KDFI plug in ecu, everything working. and 3 chinch that don't work.
will measure out the cinch board first. then check the rest.

KCPpieter
Beiträge: 17
Registriert: Do Aug 27, 2015 8:55 am

Re: KDFI Wideband lambda Red led flashing Fault

#15 Beitragvon KCPpieter » Di Sep 01, 2015 9:25 am

I did some measurements and there is no short circuit between any of the pins and the GND.

switched the daughter-board on to a basisc Circuit board. same problem. so problem is in the daughter board.

there has to be short or open circuit.... but i don't have a lay out of the KDFI, so there it ends.... will need to ship back.

i measure IA and IP = 62 Ohm
IA and UN = 569KOhm


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