2016 Pathfinder, no electricity whatsoever.

1238 Views 56 Replies 3 Participants Last post by VStar650CL, 1 mo ago

Dany03

Discussion Starter · 3 mo ago

Hi guys, just bought the car from auto auction, listed as non start. Car came with coolant in the oil, so I'll be throwing a new engine in it. But. I noticed that the car doesn't have any power, like electrical power in the car whatsoever. Put a new battery in it for a test, checked all the battery fuses, all good, but nothing works. No lights when opening doors, no instrument cluster, ignition doesn't respond, nothing.
Only thing I found is powered is the hazard lights, but not the headlights, hazards only.

Any ideas what I should look for? I thought maybe BCM is fried, but in that case at least other modules will be powered.

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VStar650CL

· #2 · 3 mo ago

Did you check the big 250A fusible link on top of the battery card? If that's good, make sure the card isn't cracked where it right-angles, that will keep juice from reaching all the subordinate links on the side of the card. There's also a 40A link in the Fuse&Relay Box that powers the BCM and most of the lighting, that link will also bring the whole system down.

Dany03

Discussion Starter · #3 · 3 mo ago

VStar650CL said:
Did you check the big 250A fusible link on top of the battery card? If that's good, make sure the card isn't cracked where it right-angles, that will keep juice from reaching all the subordinate links on the side of the card. There's also a 40A link in the Fuse&Relay Box that powers the BCM and most of the lighting, that link will also bring the whole system down.

Yes, that 250A fuse is visible good. I'll check that 40A fuse as well. Also, I was wondering, since I can't turn the ignition on, (well, nothing happens), is there any fuse for ignition circuit? Or it's all will be on BCM?

VStar650CL

· #4 · 3 mo ago

That's all the BCM. The IPDM also, but the BCM is boss. The IPDM won't do anything until the BCM tells it to.

Reactions: 1

Dany03

Discussion Starter · #5 · 3 mo ago

VStar650CL said:
That's all the BCM. The IPDM also, but the BCM is boss. The IPDM won't do anything until the BCM tells it to.

Oh, I see. In case if BCM is burnt, I'll have to take it to a dealer to program a new one? Or how does that go? And, is there's any way to check if BCM receives the power?

VStar650CL

· #6 · 3 mo ago

If it isn't fuses or links then you'll definitely need wiring diagrams. Yes, the BCM needs to be configured and have the keys and TPMS programmed to it after replacement. Definitely not plug-and-play.

Dany03

Discussion Starter · #7 · 3 mo ago

VStar650CL said:
If it isn't fuses or links then you'll definitely need wiring diagrams. Yes, the BCM needs to be configured and have the keys and TPMS programmed to it after replacement. Definitely not plug-and-play.

I see. Well, I checked that BCM fuse, it appears intact. But then I checked the contacts with the probe and on that BCM fuse one of the contacts is hot, the other one has ground on it. From my understanding it's not supposed to be like that, right? So that means BCM/wiring is shorted?
Photos: testing one blade of thee BCM fuse. Red bulb - hot, green bulb - ground. It's supposed to be empty on the other side of the fuse.
Also it sparks a little on the blade, once I'm putting the fuse in, as if it's under load. But fuse doesn't burn.

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VStar650CL

· #8 · 3 mo ago

No, that isn't really ground, you're just reading very low resistance through all the power loads connected to the link. That's normal. If there was really ground on the circuit, the link would be blown.

Dany03

Discussion Starter · #9 · 3 mo ago

VStar650CL said:
No, that isn't really ground, you're just reading very low resistance through all the power loads connected to the link. That's normal. If there was really ground on the circuit, the link would be blown.

So where do I go from here? If BCM powers, but doesn't do anything to the car, what could be the issue with it then?

Dany03

Discussion Starter · #10 · 3 mo ago

VStar650CL said:
That's all the BCM. The IPDM also, but the BCM is boss. The IPDM won't do anything until the BCM tells it to.

Here you were saying about IPDM also being responsible for powering up the car. Is there any way I can check it? Problem is, I can't even connect my scan tool because can't turn the ignition on.

VStar650CL

· #11 · 3 mo ago

The BCM and IPDM are always alive on CAN, even with the ignition off. The first thing you need to do is scan it with a better tool and see if either or both are offline.

Dany03

Discussion Starter · #12 · 3 mo ago

VStar650CL said:
The BCM and IPDM are always alive on CAN, even with the ignition off. The first thing you need to do is scan it with a better tool and see if either or both are offline.

Thank you so much for help! I was able to manually connect to the BCM module and successfully programm a new key (because car came without keys). Apparently car went in some sort of limp mode when didn't have keys inside of it.

Now status: I'm able to connect to ECM, TCM, IPDM, BCM modules. All of them has codes for can communication, I'll attach scan pics. Dead modules: HVAC, Instrument cluster, entertainment system, interior lights, trunk module. Cluster doesn't work, however I'm able to turn on turn signals, headlights, and the ignition.

Any advice how to revive instrument cluster and the rest of modules? I never worked with CAN system issues.

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VStar650CL

· #13 · 3 mo ago

The bulk of those codes look like they're because the cluster is down, but the B26F2 may be at the bottom of it. That code indicates a stuck Ignition-1 Relay. I'm looking it up, I'll try to sort it out for you.

VStar650CL

· #14 · 3 mo ago

The Ig-1 Relay feeds a whole crapload of stuff, it's built into the IPDM. The best place to check it is the 15A Fuel Pump fuse, that should go hot whenever Ig-1 is on (basically with the key). If it doesn't, the IPDM is shot.

Dany03

Discussion Starter · #15 · 3 mo ago

VStar650CL said:
The Ig-1 Relay feeds a whole crapload of stuff, it's built into the IPDM. The best place to check it is the 15A Fuel Pump fuse, that should go hot whenever Ig-1 is on (basically with the key). If it doesn't, the IPDM is shot.

Thank you so much for your help and knowledge. I'll check condition of that fuel pump fuse. In case if Ign-1 relay is bad, you're saying it's not replaceable? The whole IPDM box will have to be replaced?

VStar650CL

· #16 · 3 mo ago

Yah, it's integral with the IPDM. The fact that the cluster and HVAC aren't waking up points to a problem with the ignition or accessory circuits, both of those have battery supplies but only go online when there's an accessory or ignition signal present.

Dany03

Discussion Starter · #17 · 3 mo ago

VStar650CL said:
Yah, it's integral with the IPDM. The fact that the cluster and HVAC aren't waking up points to a problem with the ignition or accessory circuits, both of those have battery supplies but only go online when there's an accessory or ignition signal present.

Oh, one more thing. The engine will be replaced, it has coolant in oil, but I still tried to turn it over and it did. With the food on the brake it did turn over (I didn't let it run). Does that means the ignition relay is good?

VStar650CL

· #18 · 3 mo ago

Yes, it does. To clarify, are the cluster and HVAC working but just not responding on CAN, or are they out?

Dany03

Discussion Starter · #19 · 3 mo ago

VStar650CL said:
Yes, it does. To clarify, are the cluster and HVAC working but just not responding on CAN, or are they out?

They're out and not working. Ignition push button works, steering stocks works, door locks works.
Doesn't work trunk controls, dash buttons, instrument cluster, HVAC, entertainment system. They also don't respond on the scan tool, even when I'm giving commands with bi directional control, so they're completely down.

VStar650CL

· #20 · 3 mo ago

I'd check the power and signals at the back of the cluster to narrow down what circuit the problem is in. Below is the layout for the main cluster connector (don't worry about the smaller connector, it's unrelated). You need to see power on the Batt (22), Ign (21), and Acc (5) pins and ground on both ground pins (1, 2). The connector view is from the wired side:

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