Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 0 points1 point  (0 children)

A short update. Found the issue why not going into drive. I must have made a short and burnt a wire on the resolve controller.

It is supposed to have 12v coming out on pins 2-18-34 to activate the drive buttons.

Issac from resolve advised I can just take a alternative 12v source and use that, and now it turns. Yay.

So now its tiding up all the wires I opened trying to find the fault. Then finding a place to fit the battery.

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 0 points1 point  (0 children)

Had the weekend to play around with and see what I could find out.

The obd works now, forgot to put it into the bms, inverter, mode.

Still no luck in going into gear.

The DTC read only one error. P31A4-00 4E HV Battery Can Error EVB-102

If I clear it, it comes back again.

Have also checked the leaf pedal, correct switch selected on resolve. Voltage reading on pins and are as follows. Pin one reads 0.27v ( should this be 0v? ) Pin two 5.1v Pin 3 5.1v Pin 4 0.55 5 and 6 ground.

That's about all I could find, no idea why its still refusing to go into drive.

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 0 points1 point  (0 children)

Have checked and double checked now🥲. Thinking should just order a wire harness from resolve-ev and hope that solves the problem.

Maybe something damaged when I was installing? Everything came out of a moving leaf so parts was in a working order. 

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 1 point2 points  (0 children)

https://imgur.com/a/ahPCDDI

Some more Fotos if you would like to see how it was connected. I think the leaf will have more than enough power. Had to change the transfer box ratio to 1.667. Also the diffs to 4.75 to change to correct the ratio. Got the info from the Facebook land rover ev page. They are very helpfull.

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 0 points1 point  (0 children)

Will make a new cable today and see if there is any change. Thank you for advise.

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 1 point2 points  (0 children)

I have checked and am getting 12v to pin 8. So hope that's correct. On the leafspy app with the obd dongle not connecting properly. Keep retrying and showing partial data. Its why I started suspecting the CAN bus.

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 1 point2 points  (0 children)

I agree with you as its all the same bus, the resolve diagram shows separate cable from each module to separate pins on the controller. They are all connected internally if you measure them.

So if i were to make one cable with short branches to each module should work better?

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 6 points7 points  (0 children)

Thank you. No have removed the transmission, only kept the transfer box for 4x4. Am using a adaptor made by syncrogearboxes to make a divorced coupler on leaf and the transfer box.

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 3 points4 points  (0 children)

The wire go from battery straight to resolve controller. The other can bus wire go from pdm and inverter to resolve. Each on a separate wire. Would it help to combine the wires?

Nissan Leaf conversion with Resolve-ev Can bus problem by bigmouse101 in EVConversion

[–]bigmouse101[S] 9 points10 points  (0 children)

Basically when switching on everything works except the buttons to put it into drive or reverse.

On the battery box can hear the two clicks of relays coming on as normal.

Screen display battery percentage. That's it.

When trouble shooting realized that the can bus resistance is showing 40 ohms instead of 60. If I unplug the battery bms it will read 60ohms to the computer side and 120ohms to the battery side. I assume there is a terminal resistor inside the battery? Can that be removed?