LC-1 Wideband to S300 not working

fabiangt79 · Post by **fabiangt79** » Sun Feb 27, 2011 8:29 am

96 civic
B16 Stock Engine
P28 ECU with S300

I wired the LC-1 to the S300 using the B6 analog 2 input, i am not getting any reading from the S300

The AFR reading should be from the O2, as i unplug the brown wire of the LC-1 the AFR is still running.I tried the yellow wire still the same.

All the settings in the closed loop parameters, i have changed.Offsets of the voltage done but still cannot get it to work

I have my LC-1 running on my logworks in my laptop and is running fine and accurate, which i intend to use it to compare with my S300 reading.

I have attached calibration and datalogs, can someone please help me.

In this datalog my AFR in my logworks is running from 13.9 to 14.7.

AREA876 · Post by **AREA876** » Sun Feb 27, 2011 9:47 am

The yellow wire is to be connected to D14

The brown wire is to be connected to B6

It's best to connect the ground of the LC1 to the thermostat housing, that where the ECU should be ground.

Take a look at this calibration and note the changes to

Voltage offset

Voltage / Lambda conversion table

fabiangt79 · Post by **fabiangt79** » Mon Feb 28, 2011 4:31 am

I give it a try and see how it goes.

fabiangt79 · Post by **fabiangt79** » Mon Feb 28, 2011 7:45 am

I did according to the instructions changed the offsets to 0, wire the yellow to B6 and brown wire to D14.R2 and R3 was already cut.
D14 is O2 and it is wire from the original hardness, i did not cut it and just wired together.

Followed the table conversions, even worst the AFR does not move and stays still.

I used the brown wire to the B6, it works and i used -0.25 offset.Closed to the logworks but a bit richer in the hondata AFR. Fluctuates alot not really stable.

With that i increased fuel from columns 4-8 by 30% and did a datalog.
I AFR readings in log works were in the 11 plus to 12.8 or 13.

But the datalog is way out.Do i have to change any settings in the sensor overlay?

Can someone with experience that has successfully wired the LC-1 to Hondata guide me thru to get this thing work.I have spent hours trying and trying but to no success.

Please tell me the wiring process and any change in the parameters in detail, thanks in advance to the kind soul.

Just to be sure in the display section, i select AF sensor to read my LC-1 AFR right?I do not want to be reading from the wrong thing in hondata.Can someone please advise?

Is it better to wire to the ELD D10 for a more stable reading.?

AREA876 · Post by **AREA876** » Mon Feb 28, 2011 2:24 pm

CORRECTION

The yellow narrowband wire is to be connected to D14

The brown wideband wire is to be connected to B6

It's best to connect the ground of the LC1 to the thermostat housing, that where the ECU should be ground.

This is how my car is wired (JDM P72 ECU) and it works fine with out any voltage offset. Is your LC1 operating at the default settings (LM Programmer)? Try setting the valves in the analog input 2 (option> setting> analog input 2) eg. 0.00>7.35, 2.50>14.89, 5.00>22.39. If B6 doesn't work for you, you can always use D10. Note that if the ELD input (D10) is used then R136 and R138 (US ECUs) may need to be removed.

fabiangt79 · Post by **fabiangt79** » Wed Mar 02, 2011 7:04 am

I did the wiring as you told me, it'sworking but the AF still abit out by 0.3-5.

I tried the offset but cannot get it dead on as logworks.

Will ELD be more stable and accurate, i did the datalog still not accurate as the logworks.

Can hondata advise on this issue??

Post by **Spunkster** » Wed Mar 02, 2011 1:18 pm

If it is still off by a certain amount then you need to further adjust the offset in the Smanager software.

fabiangt79 · Post by **fabiangt79** » Wed Mar 02, 2011 6:04 pm

Tried all range of offsets from but just cannot be same reading

Post by **Spunkster** » Thu Mar 03, 2011 1:48 pm

Where do you have the ground for the wideband connected?

fabiangt79 · Post by **fabiangt79** » Thu Mar 03, 2011 6:45 pm

Ground connected to thermostat housing on the engine

Post by **Spunkster** » Fri Mar 04, 2011 10:27 am

Try setting the voltage offset with the engine not running, that way it's not fluctuating and it is easier to match.

fabiangt79 · Post by **fabiangt79** » Tue Mar 08, 2011 10:12 am

Ok,

You mean just power on the car to do the offset right?Get bothe to read the same reding as hondata might read slower than the actual wideband reading?

Post by **Spunkster** » Tue Mar 08, 2011 10:24 am

correct

Johnny_9 · Post by **Johnny_9** » Fri Jan 13, 2012 6:36 am

did it work?

LC-1 Wideband to S300 not working

LC-1 Wideband to S300 not working

Re: LC-1 Wideband to S300 not working