Hondata

Got a brand new S300 v3 installed in a P28, installed SManager, updated the firmware and registered the ECU to Hondata. Everything looked good and I was able to upload the base ITR map to the ECU. When I start the car it would fire up and die quickly in less than half a second. Any other attempts thereafter the car would just hesitate. It also throws the error code P1324. However, when I plug back my stock P73 ECU the error code is gone and the car starts up normally. Please help.

PS: I'm using an OBD2B to OBD1 conversion harness

2001 ITR
Comptech Icebox, DC Sports 4-1 Header
Everything else is stock

rofeksos wrote:Got a brand new S300 v3 installed in a P28, installed SManager, updated the firmware and registered the ECU to Hondata. Everything looked good and I was able to upload the base ITR map to the ECU. When I start the car it would fire up and die quickly in less than half a second. Any other attempts thereafter the car would just hesitate. It also throws the error code P1324. However, when I plug back my stock P73 ECU the error code is gone and the car starts up normally. Please help.

PS: I'm using an OBD2B to OBD1 conversion harness

2001 ITR
Comptech Icebox, DC Sports 4-1 Header
Everything else is stock

I had same problem with that....
2000 honda accrod CL1 Euro R

Try removing the s300 and cut J1 and see if the ECU starts the car then. If it still does not start then it sounds like your ECU is damaged and may either need the capacitors replaced or you may just want to use a different ECU.

UPDATE

When we started the car we gave it some gas and it was able to stay running. However, when the engine is cold, the car would just die if you didn't keep the RPM up with the gas pedal. After about a minute the CEL came on. Checking on the Hondata app the car threw the P0505: Idle Control System Malfunction code so I guess the idle control on the ECU was bad. I'm going to get the ECU swapped by the guy who built it for me.

hkgbmx wrote:
I had same problem with that....
2000 honda accrod CL1 Euro R

Try adding some gas soon after you start up the car and see if you have the same issue

rofeksos wrote:UPDATE

When we started the car we gave it some gas and it was able to stay running. However, when the engine is cold, the car would just die if you didn't keep the RPM up with the gas pedal. After about a minute the CEL came on. Checking on the Hondata app the car threw the P0505: Idle Control System Malfunction code so I guess the idle control on the ECU was bad. I'm going to get the ECU swapped by the guy who built it for me.

hkgbmx wrote:
I had same problem with that....
2000 honda accrod CL1 Euro R

Try adding some gas soon after you start up the car and see if you have the same issue

OMG, your case 100% same with me.... i also found P0505: Idle Control System Malfunction code when engine started. after that i bought a EK9 idle sensor plug from ebay and connect it with hondata... now i cannot start with hondata anymore.... why? hondata died?

What do you mean when you say you connected an idle sensor plug to Hondata?

Spunkster wrote:What do you mean when you say you connected an idle sensor plug to Hondata?

just pluged it on idle sensor because i don't have it before.
and this is my setting below

How exactly has this been wired?

Spunkster wrote:How exactly has this been wired?

I follow the ek9 ecu idle setting on the below photo.
Also I have 100% confirm my hondata s300 is work normally.(It checked by Hong Kong hondata retailer)
After that I have tried disable/enable o2 or idle sensor for start up but just not working.... (it start and die quickly within hlaf second) what's problem? I just just follow the previous setting it was work.

Spunkster wrote:How exactly has this been wired?

I follow the ek9 ecu idle setting on the below photo.( connector B)
Also I have 100% confirm my hondata s300 is work normally.(It checked by Hong Kong hondata retailer)
After that I have tried disable/enable o2 or idle sensor for start up but just not working.... (it start and die quickly within hlaf second) what's problem? I just just follow the previous setting it was work.

Have you tried the ECU on a known working vehicle?

Spunkster wrote:Have you tried the ECU on a known working vehicle?

not yet... retailer have use a small tester(photo can find on hondata website) to test my Ecu and show it all green lights (motherboard and s300 chips)
Oh, btw my ecu have installed odb2 convertor too(the gery part)

I have tried upload prelude(h22a) skl file in ecu. And it can start up, after that I have put my original skl file in ecu it works too!! But idle keep in 500-600rpm and I have tried to put some gas to 2000-3000rpm and release immediately the engine will die.(need restart engine again). However when engine achieve working temperature it works fine but some error code occurs.... (p0123, p0118, p0113)
Also I cannot run up to 2500rpm after occur these error code ,please help....

You need to try this ECU on a known working vehicle and see if it gets the same error codes. If it does it sounds like the ECU is damaged and will have to be replaced.