Daughter Board Communication Error

Andy_CTR · Post by **Andy_CTR** » Sat Oct 15, 2005 9:44 am

When starting my car up today, the engine check light remained illuminated, and the following Error Code was highlighted in Kmanager.

Daughter Board Communication Error.

The car is a 2002 Euro CTR / K20A2.
Running the Civic Type-R factory calibration.
Mods inc. Spoon N1 cat-back / Mugen Airbox.

Thanks for any advice,

Andy.

foobari · Post by **foobari** » Sat Oct 15, 2005 10:27 am

I've had this exact same issue occasionally a couple of times with '04 K20A2 Euro Type-R when the weather was really cold. Probably bad connection between ECU and KPRO? Hasn't happened now for months though.

thaduke2003 · Post by **thaduke2003** » Sat Oct 15, 2005 11:20 am

I've gotten this a few times now- I'm going to check again for loose wires today- it's quite annoying, but goes away after I restart the car- Hondata guys, any input? Mark W. (K20A3 Civic Si by the way)

Andy_CTR · Post by **Andy_CTR** » Sat Oct 15, 2005 11:46 am

Just to add, the USB was not connected to the ECU when the engine check light illuminated, and it has not been for some weeks. It is only connected when uploading calibrations, or datalogging.

Andy.

Post by **Spunkster** » Mon Oct 17, 2005 9:35 am

Try clearing security and uploading the calibration again.

Andy_CTR · Post by **Andy_CTR** » Mon Oct 17, 2005 4:36 pm

Spunkster wrote:Try clearing security and uploading the calibration again.

Could you advice how to clear security ?

Any ideas why this would have happened in the 1st place, as the calibration was working fine for a few weeks before this error occured ?

Cheers,

Andy.

Post by **Hondata** » Mon Oct 17, 2005 5:27 pm

Typically the cause is the KPro board coming loose, the soldering of the pins into the ECU or the soldering of the two jumper wires on the bottom of the ECU. Sometimes these problems do not occur immediately until either vibration or colder temperatures results in an intermittent connection.

Andy_CTR · Post by **Andy_CTR** » Tue Oct 18, 2005 1:02 am

Hondata wrote:Typically the cause is the KPro board coming loose, the soldering of the pins into the ECU or the soldering of the two jumper wires on the bottom of the ECU. Sometimes these problems do not occur immediately until either vibration or colder temperatures results in an intermittent connection.

Thanks,

Can you confirm if this is covered under warranty ? Is it an easy fix ?

This was bought via a distributor in the UK.

Cheers,

Andy.

sf-si-02 · Post by **sf-si-02** » Tue Oct 18, 2005 1:21 am

Howdy, I called in with the same problem today. I was leaving work and hit clear security, and then I got the warning about only do this if I know what it does, and I didn;t so I cleared the Daughterboard communication Cel and drove home. It will come back on tomorrow morning, but could you please explain what this does, as I couldn;t find any mention of it in the pdf (searched for security...)

thanks again
richard S.

Post by **Hondata** » Tue Oct 18, 2005 9:13 am

Can you confirm if this is covered under warranty ? Is it an easy fix ?

Who did the install?

please explain what this does

I'll update the help. It is OK to clear security but make sure you have the calibration on the laptop first, as you will not be able to download the calibration afterwards (not that you should be anyhow). After clearing security, upload the calibration.

Andy_CTR · Post by **Andy_CTR** » Tue Oct 18, 2005 9:40 am

Hondata wrote:
Can you confirm if this is covered under warranty ? Is it an easy fix ?
Who did the install?

I'll send via PM.

Andy_CTR · Post by **Andy_CTR** » Tue Oct 18, 2005 9:45 am

Andy_CTR wrote:
Hondata wrote:
Can you confirm if this is covered under warranty ? Is it an easy fix ?
Who did the install?

I'll send via PM.

Okay PM's don't seem to work

It was CPL Racing.

darqnez · Post by **darqnez** » Fri Oct 21, 2005 12:23 am

I have had this as well along with irradict idle, it started shotly after installing ESMM which made the car shake alot, I cleared security as advised when i called hondata and re-uploaded, but still have an irradict idle, has anyone else had an orradict idle in conjunction with this issue?

bossman032 · Post by **bossman032** » Tue Nov 15, 2005 11:18 pm

darqnez wrote:I have had this as well along with irradict idle, it started shotly after installing ESMM which made the car shake alot, I cleared security as advised when i called hondata and re-uploaded, but still have an irradict idle, has anyone else had an orradict idle in conjunction with this issue?

same exact problem. car is back firing real bad. hit the gas paddle back fires huge. car shakes a lot. cleared the security car started but still problems backfiring and irradict idle. also uploaded cal file again same problems. it was working fine yesterday

Post by **Hondata** » Wed Nov 16, 2005 9:53 am

Mr bossman, you have major issues with the engine swap wiring in your vehicle. Trying to troubleshoot the symphons without finding the cause of the problems is not going to work. Get the helms manual and the swap wiring diagram on our website, and go through every single circuit, especially the main relay wiring and grounds.