2011 Nissan Xterra

[AndreyB]

Body-on-frame SUV with https://en.wikipedia.org/wiki/Nissan_VQ_engine#VQ40DE engine.

Looks like CAN message format reverse engineering would be where this has to start.

Abricos has one of https://canhacker.com/ devices and I might get white panda from https://comma.ai/shop/products/panda

[mck1117]

Body-on-frame SUV with https://en.wikipedia.org/wiki/Nissan_VQ_engine#VQ40DE engine.

Looks like CAN message format reverse engineering would be where this has to start.

Abricos has one of https://canhacker.com/ devices and I might get white panda from https://comma.ai/shop/products/panda

Why get a $300 device when you could get https://canable.io/ for $29 instead?

[AndreyB]

$99 device comes with relevant software https://my.comma.ai/cabana/

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[mck1117]

Oh $100 isn't so bad - especially with an OBD connector attached.

[AndreyB]

I might get white panda from https://comma.ai/shop/products/panda

Well, is this a total turd?

I have NO idea how to setup this white panda.

Box comes with https://comma.ai/setup URL which does not help me at all.

https://comma-ai.medium.com/a-panda-and-a-cabana-how-to-get-started-car-hacking-with-comma-ai-b5e46fae8646 has "How to get started" section
with http://getchffr.com/ URL which redirects me to https://comma.ai/ which again has zero info on white panda setup.

I can see pands-xxx-pairing wifi but no idea what it gives me.

Panda has USB female plug same as my legacy USB plug. I doubt they want me to use the weird unique cable but Nick has the weird unique symmetrical cable and that gives me Unrecognized Device in windows.

Wow, this comma white panda is amazingly unclear for me.

[puff]

will this make it more clear?
https://github.com/commaai/panda

[AndreyB]

will this make it more clear?
https://github.com/commaai/panda

https://github.com/commaai/panda/tree/master/drivers/windows is the most useful link so far! I've installed the driver but still unknown device.

[AndreyB]

CAN info I have so far at https://github.com/rusefi/rusefi/issues/2278

[AndreyB]

We've recoded some CAN stuff

https://github.com/rusefi/rusefi_documentation/tree/master/OEM-Docs/Nissan/2011_Xterra/2011-nissan-CAN-June-2021

[AndreyB]

Internet has all the cool data

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[AndreyB]

Test driver development to the stars here!

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[AndreyB]

Bank 1, bank 2 they say in factory service manual https://www.nicoclub.com/archives/use-nicoclub-coms-factory-service-manual-database.html

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but nice wiring diagram says Left and Right bank. Next question is which one is which

https://raw.githubusercontent.com/wiki/rusefi/rusefi/OEM-Docs/Nissan/2011_Xterra/2011_Xterra_ECU.png

I guess I need to simply find wiring diagram in FSM and see which head is wire 14.

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[pk386]

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if its a FWD application its the one closest to the fire wall

[pk386]

Also if you go into the FSM wiring diagrams Always POST the connector number.

Example E152 is the ECM connector

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Also the ASCD (Automatic Speed control)(AKA cruise control) IS routed to the ECM and monitors for different voltages from the voltage divider....
Figured you might want to implement some sort of (Make a time stamp here in the logs when I press this button) feature for getting started.

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[mck1117]

As a general rule bank 1 always contains cylinder number 1.

[AndreyB]

Once I've enabled main relay output I got nice crank and both cam signals into rusEFI!

https://rusefi.com/online/view.php?msq=576

CAN bus is silent and I've already checked settings once any ideas?

Still have some fixed to do to get trigger magic to be fully magical after all that's the first simmetrical crank vehicle with two banks of VVT.

[bill]

cylinder 1 is the cylinder farthest to the FRONT of the engine...
on a VEE engine
and bank 1 holds cyl 1

[AndreyB]

Soldering connector pins to breakout has helped CAN

Code: Select all

2021-07-06_11_30_21_268: EngineState: CAN_rx 29E 670 8
2021-07-06_11_30_21_268: EngineState: CAN_rx 354 852 8
2021-07-06_11_30_21_268: EngineState: CAN_rx 2DE 734 8
2021-07-06_11_30_21_269: EngineState: CAN_rx 251 593 8
2021-07-06_11_30_21_269: EngineState: CAN_rx 2A5 677 7
2021-07-06_11_30_21_269: EngineState: CAN_rx 215 533 6
2021-07-06_11_30_21_269: EngineState: CAN_rx 6F7 1783 8
2021-07-06_11_30_21_269: EngineState: CAN_rx 2DE 734 8
2021-07-06_11_30_21_270: EngineState: CAN_rx 251 593 8
2021-07-06_11_30_21_270: EngineState: CAN_rx 2A5 677 7
2021-07-06_11_30_21_270: EngineState: CAN_rx 284 644 8
2021-07-06_11_30_21_270: EngineState: CAN_rx 29E 670 8
2021-07-06_11_30_21_270: EngineState: CAN_rx 358 856 8
2021-07-06_11_30_21_271: EngineState: Sending CAN message: SID 23D/8 0 0 0 0 0 0 0 70
2021-07-06_11_30_21_271: EngineState: CAN_rx 6F7 1783 8
2021-07-06_11_30_21_271: EngineState: CAN_rx 2D1 721 7

[AndreyB]

Two CAN milestones - I have gauge cluster displaying RPM and radiator fan is no longer wining in limping mode all the time looks like coolant temperature messages are being accepted by the vehicle.

Also got VVT position to synchronize once I've inverted cam sensor signal.

[AndreyB]

First time hooking up fully soldered Hellen on my daily driver!

ETB control works even while it should NOT have worked - ETB relay was supposed to be Lua-controlled and it just works without any Lua script? Weird.

https://rusefi.com/online/view.php?msq=644
https://rusefi.com/online/view.php?log=345 shows pedal error in the middle of the range. Open question if that's about wrong op-amps or wrong tune or both.

[AndreyB]

Yep, it was about op-amp. Now with U106 U108 and U109 swapped for proper part I have happy pedal position and happy ETB control.

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[AndreyB]

[AndreyB]

By the way this vehicle has Jatco 5R05 https://en.wikipedia.org/wiki/Jatco_5R05_transmission - the whole CAN bus integration is similar to E65 in principle, obviously with zero overlap in specifics.

[AndreyB]

http://shop.ukrtrans.biz/wp-content/uploads/catalogs/RE5R05A.pdf tells us that external 10 pin transmission connector is just an adapter for internal transmission harness. https://atracom.blob.core.windows.net/webinars/import/sap_atra_webinar_re5ro5a.pdf another good one

Slavic people are offering us that part! That makes me wonder if it has an official Nissan or Jatco part number?

relevant pages of official documentation PG-46 & TM-176 https://www.nicoclub.com/nissan-service-manuals

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[AndreyB]

There is that old old CAN file of 370Z

https://www.dropbox.com/s/cfpzb2mpj42q6ug/370Z%20CAN.xlsx http://www.the370z.com/tuning/89695-370z-can-bus-proprietary-pids-2.html

I see overlap on 1F9 551 580 not much but at least something!

[AndreyB]

Sporadic P0101 check engine is a known annoyance of this vehicle

https://www.thenewx.org/threads/p0101-fault-code.232130/

It has been exactly two years since I've installed a HITACHI MAF0031 from Rockauto. Do I really need to get a new one? Weird.

[AndreyB]

Well, clearing those two harness grounds on passenger side fender has allowed me to pass inspection?! Either that or warmer weather allows ECU to test evap / o2 / something else much much quicker?!

[AndreyB]

They have accepted by https://github.com/commaai/opendbc/blob/master/nissan_xterra_2011.dbc

it's tiny but at least it's what I officially know about my CAN bus.

[AndreyB]

MAF0031

Also known as 22680-7S000? https://www.romraider.com/forum/viewtopic.php?f=58&t=12453 has resulted in https://github.com/ba114/MAF-Scaling which includes the curve for that one.

[AndreyB]

https://my.prostreetonline.com/2015/02/03/dtc-p0101-test-a-vq35-maf/

On real car with MAF unhooked and poking into harness plug like on the picture, I do see 4.7v on pin 5 which is the pull-up of the intake air thermistor.

Does me not seeing similar voltage on pin 4 MAF signal mean that this MAF does not need a pull-up on the ECU side? Is there such a thing as a MAF sensor which takes automotive battery power in and produces nice voltage, not current output?



PIN 2 switched 12 volt power for your MAF
PIN 4 MAF signal wire
PIN 3 ground wire or low reference for your mass air flow sensor
PIN 5 switched 5 volt signal. (No it's not, it's intake air pull-up showing itself being a pull-up)

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https://raw.githubusercontent.com/wiki/rusefi/rusefi/OEM-Docs/Nissan/2011_Xterra/2011_Xterra_ECU.png