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Author Topic: How to connect a wideband controller to the AEM EMS?  (Read 8111 times)
GT
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« on: October 31, 2007, 08:15:12 AM »
This is how you will connect the 0-5v analog output wire from the Gauge Type UEGO Controller (30-4100) or Single/Dual Channel Wideband Controll (30-2301/2300) to the AEM EMS.

AEM EMS P/N                                                                LAMBDA #1 PIN                                                        LAMBDA #2 PIN
30-1000/1001/1002/1040/1042                                                D14                                                                          D16
30-1010/1012/1050/1052                                                        C16                                                                          A23
30-1020/1060                                                                       D7                                                                            D14
30-1030/1070                                                                       A6                                                                            E2
30-1080                                                                               C16                                                                          C8
30-1100/1101                                                                       B47                                                                           B48
30-1110                                                                               1C                                                                            9C
30-1120/1121/1130                                                                B6                                                                            B14
30-1300                                                                               4                                                                              66
30-1310/1311/1312/1313                                                        76                                                                            75
30-1320                                                                               71                                                                            73
30-1400                                                                               29                                                                            43
30-1401                                                                               44                                                                            43
30-1510                                                                               C2-31                                                                       C2-33
30-1600/1601/1602/1603                                                        19
30-1610/1611/1612                                                                46
30-1620/1621/1622/1623                                                        29                                                                            55
30-1710                                                                               2N                                                                            4J
30-1720                                                                               C3                                                                            D3
30-1800                                                                               C3                                                                            A2
30-1810                                                                               D19                                                                          B17
30-1820/1821                                                                       A26                                                                          D25
 

If your AFR between the gauge and software is way off, then most likely, your AFR unit is not correct in AEMPro. The AFR unit defaults at AFR methanol even it shows AFR gasoline. In AEMPro, go to "Configure" > "Units" select AFR unit, select AFR gasoline (if you're already on AFR gasoline, select something else, hit apply, and select AFR gasoline again).

* unit.JPG (15.55 KB, 355x201 - viewed 3643 times.)

* afr.JPG (11.28 KB, 171x244 - viewed 3631 times.)
« Last Edit: December 15, 2008, 01:24:16 PM by GT » Logged
PQatPIT
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« Reply #1 on: October 31, 2007, 10:16:02 AM »
And grounding is important as well.

With single/dual channel controller one should connect signal ground to EMS signal ground near EMS connector. Of course, power ground should be grounded. One good place is where EMS is grounded on the chassis.

With gauge type UEGO controller one should find where EMS is grounded on the chassis and use that as a grounding point.


PQ
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PQ
Talonmotosports
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« Reply #2 on: February 14, 2008, 01:26:42 PM »
My ems does not read the same as the gauge display. Anyone know why?Huh? Which do i trust???
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wspy
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« Reply #3 on: March 30, 2008, 04:19:30 AM »
Yeah I'd like to know also! I had been using a separate w/b (PLX) which works fine and which I trust more, and when I hooked up the 1313u w/b it differed. So since I trusted the PLX I went into the AEM w/b voltage graph and adjusted it untill the AEM w/b was showing what the PLX was.
I do not know why the two were not similar in readings in the first instance.
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'98 AWD DSM
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« Reply #4 on: March 31, 2008, 04:35:41 PM »
 similar problem here as well
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Srt4-joe
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« Reply #5 on: April 06, 2008, 10:58:18 AM »
I just had this problem earlier today. Where I wired in my UEGO to the harness I checked voltage there, it read 2.7.

Go to -setup-sensors-oxygen sensor-o2 #1- o2 sensor #1 wizard, checked AEM gauge type.

Then I went to -setup-sensors-oxygen sensor-o2 #1- o2 sensor #1 options- tried different load numbers till my voltage was what I saw on my voltmeter. From there I fine tuned it til the A/F's on AEMPro were the same as I saw on my gauge.

Make sure you double check what fuel it's setup to read because even though Gasoline is highlighted it might not be applied. Gasoline was highlighted but for some reason it was reading methanol still.

Later that day though my gauge just shut off completely and won't turn back on. I'm going to double check the wiring and make sure it's got good power and ground.
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kielcivic
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« Reply #6 on: July 31, 2008, 11:52:31 AM »
will this work with my sensor and ems?
i have a35-8460 w/b
and a 1050 ems civic 1999
thanks
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GT
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« Reply #7 on: July 31, 2008, 12:15:48 PM »
35-8460 is just the number on the gauge's housing (few gauges share that housing), that is not the part number of your gauge. You need to find out what's the part number of your gauge.
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kielcivic
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« Reply #8 on: August 02, 2008, 08:54:02 AM »
sorry to sounds dumb but where would that be found?
thanks
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3rotor.jp
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3rotor
« Reply #9 on: August 03, 2008, 01:33:20 PM »
When working with setting the GAIN on an Uego (box or gauge)..

-with the o2 sensor unplugged (to default the output to 14.x:1 AFR)

Do you match the voltage output from the controller to the AEM (via GAIN)

..or

Do you simply adjust the gain so that the displayed AFR is 14.X:1?

...I've always adjusted the AEM to match the controller-voltage output as to me it seem logical;
The reason I ask this is due to the directions saying (in short) "Adjust the GAIN so the EMS reads 14.7:1 with the o2 unplugged".. well that voltage might actually be 13:1 given the lookup chart in the directions..  so what do ya do?
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GT
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« Reply #10 on: August 04, 2008, 06:43:40 AM »
Quote from: kielcivic on August 02, 2008, 08:54:02 AM
sorry to sounds dumb but where would that be found?
thanks
The part number will be on the original box it came in. Does your gauge have a 4 and 6 pin connector on the back? If it does, it should be the 30-4100 gauge.

Quote from: hwnd on August 03, 2008, 01:33:20 PM
When working with setting the GAIN on an Uego (box or gauge)..

-with the o2 sensor unplugged (to default the output to 14.x:1 AFR)

Do you match the voltage output from the controller to the AEM (via GAIN)

..or

Do you simply adjust the gain so that the displayed AFR is 14.X:1?

...I've always adjusted the AEM to match the controller-voltage output as to me it seem logical;
The reason I ask this is due to the directions saying (in short) "Adjust the GAIN so the EMS reads 14.7:1 with the o2 unplugged".. well that voltage might actually be 13:1 given the lookup chart in the directions..  so what do ya do?
For the controller, you will need to adjust the o2 gain to match the voltage coming from the controller.
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3rotor.jp
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3rotor
« Reply #11 on: August 04, 2008, 11:10:35 AM »
thats what I had in mind.. so many times I've seen tuners adjust the gain to read 14.5:1 when installing new Uegos..  Glad to know I'm on the right track!
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GT
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« Reply #12 on: August 04, 2008, 11:54:55 AM »
Quote from: hwnd on August 04, 2008, 11:10:35 AM
thats what I had in mind.. so many times I've seen tuners adjust the gain to read 14.5:1 when installing new Uegos..  Glad to know I'm on the right track!
If you're using the gauge, you can adjust the gain following the AFR (14.7/8) because the gauge is designed to default at that AFR and voltage. Since you're using the controller, you can adjust following the voltage.
« Last Edit: August 04, 2008, 11:57:35 AM by GT » Logged
bpclements
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« Reply #13 on: September 03, 2008, 11:55:12 PM »
Quote from: wspy on March 30, 2008, 04:19:30 AM
Yeah I'd like to know also! I had been using a separate w/b (PLX) which works fine and which I trust more, and when I hooked up the 1313u w/b it differed. So since I trusted the PLX I went into the AEM w/b voltage graph and adjusted it untill the AEM w/b was showing what the PLX was.
I do not know why the two were not similar in readings in the first instance.

Make sure that you run the setup wizard for the internal uego and that you change the units to AFR Gasoline. The wizard will configure the AFR table for you and it also instructs you to unplug the sensor from the AEM and set the gain for an O2#1 Volts reading of 3.94V. Once you do this it should read correctly.
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mcfly
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« Reply #14 on: March 26, 2009, 12:31:19 PM »
Hello,

I want to connect a wideband 02 into my 1621.  Does it matter if i put it to pin 55 or pin 29?
Do i have to keep the factory narrow band sensors after?
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