OSE 12P V112

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Posts: 11
Joined: Wed Nov 23, 2011 7:32 am
Location: SE USA

Re: OSE 12P V112

Postby DixiePicker » Sat Aug 31, 2019 3:44 am

CLOSED LOOP Fuel Control using $12P
454 cu in/7.4L 4L80-E ECM = US 165 US TCM.
1 Bar Map MAP A and B flags unchecked.
Heated O2 - Denso - Flex set up to enable htr RPM vs Temp
No NVRAM. Using APU1 and/or PROM attempted for C Loop
Beginning cal was 5.7L posted with changes in VE, cold, Spark ect.
Wiring correct / Grd measured with DVOM from Bat N(earth) to ECM Earth back probe & engine running.
No Wideband functional at ECM yet. Wideband connected to pin @ ECM but Innovate controller not set up. ADX WB reads 7.30 and back probe ECM Pin = 6.3 V KeyOn, Eng stopped, heater ran 5 min on WB. (Brown wire from AF cntrl. Innovate WB gauge functional and recal done. Working well.)
No DTC/Codes set
The BLM/INT remain at 128. Same with STFT/LTFT.
Coolant temp at 90 C - C/L temp cal = 44 C
VE Learn Flag set On or OFF will not allow Closed Loop & Learn Control
Wide Band Learn Cntrl Flag is not set/unchecked
Have road speed on 1 hour drive
O2 threshold cals @ 0.40 low / 0.60 hi Volts
Can move fueling with VE Table MAP A.
O2 Ready flag = SET
O2 cross counts 1 to 7 or so. Higher on drive at steady TPS & Load when VE closer to 14.1, My Stoich = 14.1 - 10-14% Ethanol in Petrol here
Data reads:
Closed Loop = Open
Closed Loop Idle = Set
BLM and INT read 128 with no movement. (STFT & LTFT same)

Innovate AF Gu reads 14.1 to 15.2 or where VE is moved. VE change tracks on O2 Volts and AF Gu.
Can use Mode 4 control to Force Closed Loop and Closed Loop will = Closed - Learn control = disabled. BLM & INT always at 128. (Force Closed Loop is not in the $12P ADX zip file. Added and other M-4 cntrls)

Is "Closed Loop" for fuel control/Trim as US OEM calibration? Modifying BLM/INT.

What am I missing to gain Closed Loop Fuel control?

I take it that Closed Loop Idle for spark control for idle stabilization vs IAC?

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Joined: Sat Feb 28, 2009 8:38 pm
Location: Wellington NZ

Re: OSE 12P V112

Postby delcowizzid » Sat Aug 31, 2019 11:59 am

If you changed the value for stoich in the scalers you need to change the areas with 14.7 in the open loop airfuel ratio table to the same value so it goes closed loop
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem


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