AEM EMS and SC300 Issues
#1
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AEM EMS and SC300 Issues
Gentlemen (and the few ladies):
I am having a few issues with my AEM 1101 EMS and my 92 SC300.
First off, the car runs fine. I've tuned the idle, the startup, fuel, decel, throttle, GM 3-bar MAP (Maf is GONE) and IAT. Car runs great. So this isn't your standard rookie BS question.
My problem is the damn A/C. I can not get the proper a/c request input from the car to make the AEM happy. I've tried EVERYTHING I can think of. I've tried faking the signal to Pin 34A, I've tried every single combination of a/c request input type in the a/c options box, and nothing works to get the proper output on Pin 23A which is the a/c clutch.
The problem is as follows. The a/c is either always on, or always off. The AEM overrides the climate control. This is because the AEM is not recognizing the a/c input from the climate control. So it either turns the a/c on or off, depending on how I configure the a/c options. The climate control can be totally off, and the a/c will be functioning. I've been fighting this for days and the AEM forums haven't really provided any insight.
Right now I have Pins 34A and 23A removed from the plugs and jumped together thus eliminating the AEM completely from the a/c circuit. While the a/c works the way it should this way, the fact that the AEM is cut out means that I lose important functions like the a/c idle up, and the WOT a/c kill.
Cliff Notes: All you SC300 owners with the AEM 1101 box, how did you get the a/c to function correctly?
Thanks all!
I am having a few issues with my AEM 1101 EMS and my 92 SC300.
First off, the car runs fine. I've tuned the idle, the startup, fuel, decel, throttle, GM 3-bar MAP (Maf is GONE) and IAT. Car runs great. So this isn't your standard rookie BS question.
My problem is the damn A/C. I can not get the proper a/c request input from the car to make the AEM happy. I've tried EVERYTHING I can think of. I've tried faking the signal to Pin 34A, I've tried every single combination of a/c request input type in the a/c options box, and nothing works to get the proper output on Pin 23A which is the a/c clutch.
The problem is as follows. The a/c is either always on, or always off. The AEM overrides the climate control. This is because the AEM is not recognizing the a/c input from the climate control. So it either turns the a/c on or off, depending on how I configure the a/c options. The climate control can be totally off, and the a/c will be functioning. I've been fighting this for days and the AEM forums haven't really provided any insight.
Right now I have Pins 34A and 23A removed from the plugs and jumped together thus eliminating the AEM completely from the a/c circuit. While the a/c works the way it should this way, the fact that the AEM is cut out means that I lose important functions like the a/c idle up, and the WOT a/c kill.
Cliff Notes: All you SC300 owners with the AEM 1101 box, how did you get the a/c to function correctly?
Thanks all!
#5
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I'm having the same problem with my ac, but for some reason, mine wont even power on at all.
I'm also running the AEM. I havent gotten into it yet, since i've been focusing on other things first.
I'm also running the AEM. I havent gotten into it yet, since i've been focusing on other things first.
#6
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Originally Posted by DETUNED
I'm having the same problem with my ac, but for some reason, mine wont even power on at all.
I'm also running the AEM. I havent gotten into it yet, since i've been focusing on other things first.
I'm also running the AEM. I havent gotten into it yet, since i've been focusing on other things first.
So you have that option should you want it on 100% of the time.
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#9
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justin nenni has come to our shop before to tune AEMs on several supras and angel robles is my tuner for the AEM and a lot of others around the orlando area. I'll give him a call today to see if he can help you out and give his input.
#10
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Thread Starter
Originally Posted by DETUNED
justin nenni has come to our shop before to tune AEMs on several supras and angel robles is my tuner for the AEM and a lot of others around the orlando area. I'll give him a call today to see if he can help you out and give his input.
#11
DETUNED, have you set the parameters for your ac? Look at Options - A/C, A/C request should be set to PR press low and A/C output #1 to LS6. You can go into Configure Outputs menu and select LS6 and make it active and will turn on to A/C magnetic clutch. LS7 should also be active. You can also set the parameters at which the A/C clutch will activate. You will be able to set Load, RPM, TPS, Road speed and Coolant temp. This is the closest you will get to not having the A/C on all the time like when in high rpm's and boosting, or not being on until the car warms to a certain temp.
I played around with this quite a bit last summer and am about to start again. I will be doing an R12 recharge.
Hope this helps
gadgetSC-t
I played around with this quite a bit last summer and am about to start again. I will be doing an R12 recharge.
Hope this helps
gadgetSC-t
#12
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Thread Starter
Gadget...
Dunno if that reply was aimed at me since I posed the initial question.
Either way, all my outputs are correctly set up as you describe above. My issue is with the INPUT. The EMS does not recognize the a/c request input. This is evidenced by monitoring the A/C parameters specifically a/c status. It can't be changed via the dash a/c control.
Dunno if that reply was aimed at me since I posed the initial question.
Either way, all my outputs are correctly set up as you describe above. My issue is with the INPUT. The EMS does not recognize the a/c request input. This is evidenced by monitoring the A/C parameters specifically a/c status. It can't be changed via the dash a/c control.
#14
Originally Posted by 2jznat
scott why didn't you tell him i had the same problem. email or call me and i will give you the resistor size and where to put it. not enough voltage on request line. been here and fixed it.