In Dash Lcd With Vga/usb Input For Car Pc

[Chris Rogers]

must look at this once I get my launch diagun back.. I do not remember seeing a menu for HVAC in the earlier cars. it IS there for the later ones (V35/V36)

fari point about the undocumneted BUS as well.

[Chris Rogers]

$1E - (B7) that is the compressor control relay. output. writing to that will fire the compressor up.

$13 - (B4) AC request input from HVAC unit.

$43,$47 - that is where I would be playing myself.

*looks* like you can get access to it IF the unit supports it.

I'll have a look for the actuation tests once my diagun comes back.

[BundyBear]

"basically not", are you saying that you can communicate with the AC control unit (at least on your R33 GTS/whatever real model it is), i.e. it exists on the consult bus?

At least for my 33 gtst, a positive definate maybee.

in short, there are active tests for the doors (fresh/recycled air, dash/vent/foot) and fan test with 2 speed etc etc but you can only adjust the cabin temp by +-2 Deg (not enough)

however the mysterious test 0x44, could easly set the temp and more ( the temp range could be covered in 5 bits, leaving 3 spare), I just havn't found any further info on ox44, or had the time to sus it out.

the potential is high to hijack the A/C via Consult, however it does seem to fall in the 'just to easy' category

attatched the file, see last page, last couple of lines

Generic_Nissan_ECU_Sensor_or_Data_register_table_Ver_2.pdf

Bundy

ps piped by slow typing AGAIN !!

Edited February 18, 2011 by BundyBear

[Chris Rogers]

you have my interest on this as you can probably tell. shame you are so far away though.

[Chris Rogers]

$42 - set temp location. VAL/16 is the word to write to it. that LOOKS like the right spot.

looking further at that I *think that is the cabin temp sensor read location. correct me here.

[BundyBear]

fond of the unknown myself, but having the standard controls and consult access woult be very nice, best-O-both worlds

yea can't leave God's country but ...hehe

got a bro-inlaw up there but ... another 33

Edited February 18, 2011 by BundyBear

[Chris Rogers]

PFFT - consult -

diagun = easier

http://www.amazon.co...n/dp/B0034YB7MY

yes I like to fiddle

[BundyBear]

$42 - set temp location. VAL/16 is the word to write to it. that LOOKS like the right spot.

looking further at that I *think that is the cabin temp sensor read location. correct me here.

I read as:

0x20 0x21 0x22 Temp sensors

0x42 target temp (ie display temp) 0x40 as a trim

then again there's

0x26 sun load, could be a calculated value?

& 29, 2A

Edited February 18, 2011 by BundyBear

[BundyBear]

[/b]yes I like to fiddle

it's like a desease hey!!

[NewKleer]

when ive got some time ill try get the consult2 out and sus it out.

if there are any official listing of the names of the data sensors, and active tests, from the service manual (i.e. like how most service manuals have, in the EC section, an on-board diagnostics bit which lists all the data sensors/active tests and what they mean), that'd make things easier to find.

[Chris Rogers]

once I get my launch back I'll take a few snaps of the data screen. I usually have a R32,33 handy to fiddle with so it wont be an issue.

[Chris Rogers]

I read as:

0x20 0x21 0x22 Temp sensors

0x42 target temp (ie display temp) 0x40 as a trim

then again there's

0x26 sun load, could be a calculated value?

& 29, 2A

$26 - that will affect the $40 value. unsure by how much though.

would be good to have one of these things mocked up on a bench with all the sensors attached. that way you could write to the registers and see what you could and could not access.

[nicr4wks]

What init string are you using, from memory the documented DF ecu does not respond over my consult, I do have something at 0xE7 which afaik is undocumented, always thought this might be the a/c on a 33? Either that or ABS.

[NewKleer]

E7 is ABS

try C5, im not sure what it is. ICC i think was what i wrote down for it, whatever that is.