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 Post subject: Re: secondary air pump enable condition?
PostPosted: Thu Nov 16, 2023 2:30 pm 
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Joined: Sat Sep 03, 2022 1:22 pm
Posts: 29
cortin wrote:
kotarahu0729 wrote:
Hello.
No update for this?

I really need to stop secondary air pump operation before it brokebn.
Is there any threshold for coolant temp or something to disable air pump operation?

My car is JDM 2012 GRB with AZ1G800S flashed.

There is


Hi, I still don't understand how I can do.
" Secondary Air Ambient temp A" is the pump operation range for ambient temp, right?
If I change the "Min" from -15 to 100degC, pump will not run anytime, right?

And how can I get these value changeable? Do I need the definition file which include something for this?


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 Post subject: Re: secondary air pump enable condition?
PostPosted: Fri Mar 08, 2024 1:36 pm 
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Joined: Sat Sep 03, 2022 1:22 pm
Posts: 29
Hi, I uploaded AZ1G800S hex to below link.
http://apps.ecuresearch.ru:8080/rom-tools-web/

And I checked cat warm up staff, and then downloaded it.

Here is the rom comparison between original and patched.
And my question is, is this threshold to disable secondary air pump?

Please please please help me to disable this f*** secondary air pump system correctly!!! :D


Attachments:
スクリーンショット 2024-03-08 222846.png
スクリーンショット 2024-03-08 222846.png [ 47.9 KiB | Viewed 450 times ]
231009_ECU関連メモ.jpg
231009_ECU関連メモ.jpg [ 198.93 KiB | Viewed 450 times ]
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 Post subject: Re: secondary air pump enable condition?
PostPosted: Fri Mar 08, 2024 4:21 pm 
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Joined: Thu Dec 06, 2012 11:25 pm
Posts: 65
Cortin gave you more than enough information - the three tables you can find with Scoobyrom, and the -15 120 should be C1 70 00 00 42 F0 00 00 in hex. Find it in the ROM, test and report back.

_________________
Zubaru.tuninK at gmail


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 Post subject: Re: secondary air pump enable condition?
PostPosted: Tue Mar 12, 2024 4:00 am 
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Joined: Sat Sep 03, 2022 1:22 pm
Posts: 29
Thank you so much for the reply.!
I'm getting understanding・・・

I should forget Subaru Denso SH705x ROM Patcher for now, right?

I found "C1 70 00 00 42 F0 00 00" in original hex only at D5280,
and this should be air temprerature threshold for secondary air pump operation?

In order to disable pump operation,
"C1 70 00 00 42 F0 00 00" --> "42 F0 00 00 42 F0 00 00"(Min-15 Max120 --> Min120 Max120) souhld work.

Is my understanding correct?


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スクリーンショット 2024-03-12 124615.jpg
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 Post subject: Re: secondary air pump enable condition?
PostPosted: Tue Mar 19, 2024 3:49 pm 
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Joined: Sat Sep 03, 2022 1:22 pm
Posts: 29
Hi, sorry for a lot of question but I was logging secondary air pump operation before change rom data to make sure I can stop it intentionally.
Then I noticed that sometimes the pump didn't work at cold start.
This is brief summary of pump operation ON or OFF with my vehicle.
I'm not sure if this is related, but coolant temp<8degC, or intake air temp<12degC make pump operation stopped.
But according to Cortin's table, pump should work at ambient temp > -15degC.
Is this a contradiction? Or coolant temperature or intake air temp should have another threshold for pump operation?

I'm sorry again but I just wanna make sure that below change can stop pump operation correctly...!
"C1 70 00 00 42 F0 00 00" --> "42 F0 00 00 42 F0 00 00"(Min-15 Max120 --> Min120 Max120)

Thank you!


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スクリーンショット 2024-03-20 004740.png
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 Post subject: Re: secondary air pump enable condition?
PostPosted: Mon Feb 09, 2026 3:54 am 
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Joined: Wed Apr 17, 2024 10:15 pm
Posts: 33
kotarahu0729 wrote:
Hi, sorry for a lot of question but I was logging secondary air pump operation before change rom data to make sure I can stop it intentionally.
Then I noticed that sometimes the pump didn't work at cold start.
This is brief summary of pump operation ON or OFF with my vehicle.
I'm not sure if this is related, but coolant temp<8degC, or intake air temp<12degC make pump operation stopped.
But according to Cortin's table, pump should work at ambient temp > -15degC.
Is this a contradiction? Or coolant temperature or intake air temp should have another threshold for pump operation?

I'm sorry again but I just wanna make sure that below change can stop pump operation correctly...!
"C1 70 00 00 42 F0 00 00" --> "42 F0 00 00 42 F0 00 00"(Min-15 Max120 --> Min120 Max120)

Thank you!


did you try this? ("C1 70 00 00 42 F0 00 00" --> "42 F0 00 00 42 F0 00 00"(Min-15 Max120 --> Min120 Max120))
did it work?
thanks.


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