Good point. So I thought this was interesting, I wrote this questions to my Grok Bot and this was its response.
Question:
"I have a vehicle that runs on a dual battery setup. The main starting battery is a standard lead acid battery and the...
Yeah I have been having issues with the batteries not lasting as long ever since I put in the Blue sea disconnect system along with my solar panel and controller. I need to isolate the culprit which I am leaning toward the solar controller. I...
sounds like you're sorting things out bit by bit.
I spend a lot of time in the backcountry so replacing the FP, EFI & COR relays is a non brainer to me. I don't care what they cost because the alternative is unthinkable in the bush. I'm...
Yes they are up there in age and mileage for sure! I still think the oddest part of the failure is that the ground wire burnt out in some random spot somewhere in the harness and it wasn’t at a connection point. Now that that’s fixed the truck...
This was a great read, thanks for closing out the thread. Given the age of our rigs, replacing the FPR and COR as a PM seems like a good idea. These two relays have a lot of cycles in them!
Ok so I got it figured out. After running through all the voltage and continuity tests again, I determined the Red/white ground signal wire was having an intermittent loss of signal. This is strange because when we checked the same pin at the COR...
I will have to check the reading again to verify. I did have someone helping me and calling out the readings as we went through the pins so maybe we mixed it up somehow.
Yes I have checked continuity between pins 4 of COR and 5 of FPR and they are good. I have not checked 1 of FPR to E7-13 yet but will today. I checked continuity between pins from COR and ECU and they are good.
Yeah, I was thinking that may have been the problem and was one of the first things we looked at about six months ago. The vehicle has no problem starting in Park or neutral when the FPR has +12 so it seems to be working properly?
No I am not getting +12 to pin 5, that’s been the issue that I’m trying to figure out. The COR isn’t sending the +12 to the FPR. With the FPR unplugged and testing the plug with the ignition in the On position I am getting no reading from pins 1...
This one is a real head scratcher!
96' FZJ80 that has ran great for years but started having intermittent staring issues. Primarily the issue was the clicking starter but not turning the engine over but after dozens of attempts sometimes it would...