AFR drop out at 4.98 volts on D10

[aaimada]

Noticed in Smanager display, my AFR drops to 9AFR while my NGK AFX Gauge is showing 16.00AFR. Monitored ELD D10 voltage, stays at 4.98volts which should correspond to aprox. 16.00AFR. I have it set up to 0 volts = 9.0AFR and 5 volts = 16.00AFR
Possible faulty PCM and/or PCB?

[Hondata]

Have you removed R136 and R138?

[aaimada]

Have you removed R136 and R138?

Yes both resistors have been cut.

[Hondata]

Double check you have the correct pin, then use a multimeter to see what the input voltage actually is.

[Spunkster]

Change your display settings to go higher than 16, set them to something like 20 or 30 for a max

[aaimada]

Change your display settings to go higher than 16, set them to something like 20 or 30 for a max

I think I tried that but I'll try it again.
That would be in options then sensors right?

[Spunkster]

Double click the sensor in the sensor list window.

[aaimada]

Double click the sensor in the sensor list window.

Same problem.
At 16AFR on my meter = ELD 4.96 volts. L.volt drops to 0.00 volts which shows up 9.00 AFR in display.
Anything lower than 4.96 volts, L.volt equals ELD volts.
It's like the ecu cannot interpret ELD to L.volt when it exceeds 4.95 volts

[Spunkster]

You might be better off using a wideband that reads from 10-20 AF instead of just 9-16 AF. Most widebands can read to 20 AF. I have tested this with my own vehicles using the PLX widebands and they do not show the same issue you are having. When they go fully lean they stop at 4.98V and show a max AF reading of 19.85:1.

[aaimada]

You might be better off using a wideband that reads from 10-20 AF instead of just 9-16 AF. Most widebands can read to 20 AF. I have tested this with my own vehicles using the PLX widebands and they do not show the same issue you are having. When they go fully lean they stop at 4.98V and show a max AF reading of 19.85:1.

I tried another s300 and it works perfectly. No drop outs at all when at 16AFR.
Looks like Ill be needing a new s300.

[Spunkster]

Did you swap just the s300 or the s300 and ECU?

[aaimada]

Did you swap just the s300 or the s300 and ECU?

A new ecu with a s300v2.

[Spunkster]

The s300 itself has nothing to do with the voltages the ECU sees. You are inputting the voltage into the ECU, not the s300. Try your s300 in the known working ECU.

[aaimada]

The s300 itself has nothing to do with the voltages the ECU sees. You are inputting the voltage into the ECU, not the s300. Try your s300 in the known working ECU.

I going to buy a new s300. Hope it works.
I also notice my lap top disconnects when I hit vtec or red line. I have to unplug my laptop and plug it back in for it to work again.