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Obd2 & Can Bus

Commsman

By Commsman,
in Four Door Family & Wagoneers

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Commsman Veteran

Commsman

Posted
Posted

Hi all

Can anyone confirm if the M35 Stagea (and the V35 Skyline for that matter) have CAN Bus signal on the OBD2 interface?

I have read this: CAN Protocol Pins : If pins 5, 6, 14 and 16 are populated, the vehicle supports CAN.

On the OBD2 connector, 5 = GND, 16 = PWR, 6 & 14 are Data (CAN).

My connector has all these except 14 is missing. There is a wire (green/yellow with pink band) turned back in the harness and connected to a different coloured wire. It looks decidedly aftermarket (unsure of its use) and I reckon it would have come from position 14 on the connector.

Can anyone drop their OBD2 connector out and confirm they have a wire in pin 14, and report on the colour?

If you want to compare all colours, mine are:

1. Yellow/black

2. Empty

3. Red

4. Black (with white dots?)

5. As above

6. Light blue

7. Purple with pink band

8. Green/yellow with pink band

9. White/green with pink band

10. Empty

11. Empty

12. Yellow with pink band

13. Brown/yellow with pink band

14. Empty but probably should have Green/yellow with pink band

15. Empty

16. Red/white with pink band

Now, why do I want to know?

Anyone without cruise control watch this spot. I'll be posting more info about a drive-by-wire cruise control when I've nailed down some answers (like this one).

It can be connected with wires to the speed signal, tacho, brake switch (& clutch if you have a manual) like most D-B-W systems. BUT, to make install easier, it can just have have 2 wires connected to the cars CAN Bus, if it is so equipped, and you don't need the other signal wires. How easy is that!

Oh, and 2 other really good things, it plugs into the connector on the accelerator pedal and is compatible with the steering wheel controls.

I'll fill in more details soon, but if I get enough interest you could have "state of the art" cruise with factory controls installed at your place in an afternoon for $600 or less.

Anyone want to help with wire colours and locations now?

Cheers, Leon.

post-76144-1289709695_thumb.png

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  • 2 years later...
wht510 Experienced

wht510

Posted
Posted

The M35 is obd2 but not the compliant version. The 350z is, and the VQ35 version of the V35 should be... What is it you would like to know?

If running an aftermarket ECU (such as Link/Haltech/Motec etc.), will they be able to interface with the V35/350Z CANBUS system, or do you need to run the factory ECU to control that with a piggyback?

Just trying to find out how easy it is to run the R34 GTR box behind a VQ motor for manual action (and AWD). Both V35 and M35...

I know you have a fair bit of experience with this Scotty, so just picking your brain (and anyone else who has done something similar....)

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scotty nm35 Grand Master

scotty nm35

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Posted

V35, fairly easily with the 3.5 using a plugin (platinum pro), hard with the 3L and 2.5. I think the Link would be the better option, and much cheaper than the Motec.

M35, almost impossible with the 2.5det at the moment, no-one has managed to fit a full standalone on the det afaik let alone a manual box.

I would be going with the R33 gtr box personally, as they are 1/4 the price. You can buy an adapter plate from for VQ to RB conversions for around $1k US. Lot's of custom work required, and the V35 manual interior parts required are hard to come by.

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Commsman Veteran

Commsman

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Posted

3 year old posts don't warrant responses. :P

:) I see no one actually answered my original question (had to figure it out myself by experimentation), so why would anyone bother clarifying a throw away statement like that...

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scotty nm35 Grand Master

scotty nm35

Posted
Posted

It's a shame we can't get the cruise to operate through the can network, I suspect the cruise setups we are using at the moment cause occasional differences in resistance, triggering limp mode for the throttle circuit. I have had to disconnect one of yours Chris, and I think mine is still playing up too after already swapping the throttle and pedal assys. I will be dropping the adapter loom for the pedal next, to see if the occasional limp mode stops occurring.

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  • 6 months later...
WAGON_BOY Mentor

WAGON_BOY

Posted
Posted

I'm after a OBD2 blue tooth device that works..........

I bought one of these "http://www.ebay.com.au/itm/ELM327-Interface-V1-5-Bluetooth-OBD-II-OBD2-Auto-Car-Diagnostic-Scan-Tool-AU-/251319157864?pt=AU_Car_Parts_Accessories&hash=item3a83ca0468" only to find its not compatible :(

found out after I got it that it only supports Nissan sunny and x-trail..............FFS.

what's our protocol KWP2000/ISO 14230-1 ???

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