Incorrect Lambda readings when using the Stim.

[DerekJ]

Hi All,

I’ve been trying to get my Innovate LC1 EGO sensor to work with my MS2 & V3 Main board (code version 2.68).

In the configurator, I have set the lambda sensor to :-
“Innovate LC-1 default, 0-5v = 0.5-1.5 lambda” and "Display Lambda instead of AFR in Gauges" is checked. The gauge scale shows yellow from 0.5 to 1.5, and red from 1.1 to 1.5.

With the Stim connected and set to WB, I can see the voltage in the Stim swing 0-5V. On pin 28 of the processor daughter board, I can see the voltage following the Stim. However, in Megatune, the lambda gauge sits at 1.15 until the voltage gets to about 0.4 then swings down to 0.82 at a voltage of about 0.5. The lambda gauge then sits at 0.82 for the rest of the input voltage range.

Anyone know what I’m doing wrong???

Thanks in advance,
DJ

[efahl]

Derek,

Did you calibrate the MS-II internal tables for that WB? In MegaTune, Tools -> Calibrate AFR Table... and then select the LC1 default. If you don't do this, the values coming back from the MS-II are for the default narrow band sensor.

Eric

[DerekJ]

Dohhhhh

Many Thanks Eric.
Derek