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Old 09-08-2016, 11:30 PM   #51 (permalink)
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Don't know. I can't test this because I seem to get Auto Stop in below-freezing conditions anyway. I've had it at like 20F.

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Old 09-15-2016, 02:52 AM   #52 (permalink)
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Just wanted to say someone on Insight Central reports that a momentary switch works great. I guess I was being overly cautious.
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Old 09-22-2016, 09:30 AM   #53 (permalink)
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Late to the party, and just wanted to say: nice work!!

Stuff like this really makes me miss my Insight (RIP).
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Old 10-01-2016, 12:42 AM   #54 (permalink)
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I had the idea to try integrating an outside-air temperature spoof into your autostop system, and went looking through my diagrams to see if there were any really clever ways of doing it.




Clearly, the outside air sensor only goes to the heater control, and does not split as the VSS does. This means the heater control is reporting something to the ECU, and there are only two wires going from one to the other:

1) ECU A23 (BRN/YEL) which is marked as "HTRS"

2) ECU A2 (BLK/YEL) which is marked as "ENGRDY"

When I see these two acronyms, I read them as "heater system" and "engine ready", but it's only conjecture. BLK/YEL (ENGRDY) goes to the gauge assembly, in addition to the ECU. Interestingly, the VSS (BLU/WHT) has a line that runs to both gauge assembly and heater control.

There are two interpretations I can see:

1) The gauge cluster sends signal or voltage to the ECU when the car is below a certain speed or under certain deceleration conditions, and the heater control panel also sends a signal/voltage if the outside air temperature is above a certain level, and if this signal/voltage is absent, you can get auto-stop.

This, however, does not explain why fooling the ECU with a fake VSS signal allows auto-stop. Why is the gauge assembly also connected to ENGRDY? Maybe the cluster provides another reason not to auto-stop?

2) Perhaps instead, ENGRDY informs the heater control to shut off the cabin air blower, and for the gauge cluster to show the auto-stop light, while HTRS is the signal letting the ECU know whether conditions for auto-stop are appropriate - e.g. climate control isn't set to "auto", temperature is appropriate.

I'd love for someone else to take a look at this and help me puzzle it out. I'm thinking one of these lines is a signal going to the ECU, and the other is a signal coming from it.

EDIT: It would be nice if HTRS was simply a present/absent voltage that signaled if auto-stop could activate. It would be nice to put that on a relay with the FAS module, and enable auto-stop at the push of a button even if climate control is set to "auto" or outside air temperature is too low.

Last edited by Ecky; 10-01-2016 at 12:51 AM..
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Old 08-05-2017, 04:12 PM   #55 (permalink)
Engine-Off-Coast
 
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Join Date: Apr 2016
Location: Atlanta
Posts: 323

Hyper Black - '10 Honda Insight LX
90 day: 46.78 mpg (US)

Unit-02 Red Insight - '00 Honda Insight 5MT
90 day: 68.53 mpg (US)
Thanks: 131
Thanked 150 Times in 90 Posts
I'm bumping this thread. I still have pre-programmed Auto-Stop chips for sale for $18 shipped anywhere in the USA or $15 if picked up in person near Atlanta, GA.

I also have a pre-made PCB that I will sell for $43 shipped or $40 picked up anywhere near Atlanta. This is the board in question:



If you have a clutch switch in your G1 Insight (I cannot recommend a clutch switch more highly, you absolutely should get one if you have a manual, even if you don't want an Auto-Stop button) then this PCB will let you install an Auto-Stop button without any interference from the clutch switch.

I'm going to re-design this board with different components later, but I've tested this one and it works, and it's very similar to the older one I use in my car.

The red switch is for forwards compatibility with a possible future software update. Just leave it in position 1 for now.

Anyway, private message me here or on Insight Central if you want this PCB.

Also:
If you don't have a clutch switch yet you could still install this and get EFAS and then decide to install a clutch switch later.

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