help with electrical shortcut

[507omar]

My truck had a problem inside the fuse box. I was in the countryside and was able to drive it home without towing it.

now it turns on but the engine shuts off. probably the diesel pump is not getting current.

does anyone have the wiring diagram for ln106? does anyone know which one is that burned red wire in the bottom left corner of the picture, according to the wiring diagram?

 

[PebbleCruiser]

LN65 owner here and I used this EWD as it is a generic diagram for all Pickups MY85-88?

Im not familiar with LN106 but if it same as my 2L system the fuel cut solenoid shouldn't cause intermittent running issue, either the engine runs with 12v at fuel pump solenoid or 0V immideatly stops. If the engine is running briefly you probably have 12v there or it wouldnt even fire up.

 

[GreenPump]

I can look at my factory service manual when I get home tonight. I also have an LN106. I will get back to you.

 

[507omar]

I can look at my factory service manual when I get home tonight. I also have an LN106. I will get back to you.

please do. it would be really helpful. thanks

 

[507omar]

LN65 owner here and I used this EWD as it is a generic diagram for all Pickups MY85-88?

Im not familiar with LN106 but if it same as my 2L system the fuel cut solenoid shouldn't cause intermittent running issue, either the engine runs with 12v at fuel pump solenoid or 0V immideatly stops. If the engine is running briefly you probably have 12v there or it wouldnt even fire up.

View attachment 3781614

View attachment 3781615

View attachment 3781616

View attachment 3781617

View attachment 3781618

omg, this will really helpful if i ever understand it.

i am repairing my second hand ln106, but my dad is the single owner of a 86 ln65. his truck has even bigger electrical issues.
i will use this to try and repair it.

thanks a lot

 

[GreenPump]

please do. it would be really helpful. thanks

Since posting, this truck, along with the associated FSMs, has gone to a new home.

@BadPaddler has the LN106 chassis manual in English. Maybe he will snap a picture for you of the electrical pullout in the back.

 

[BadPaddler]

Absolutely. Which page do you need?

 

[nissanh]

If it is running, the the pump is getting current. Have you checked the diesel filter?

remove that burnet wire and try to start the engine. It it stars then that wire has nothing to do with the starting process. Looks like there is a lot of aftermarket wiring, spices etc.,

Check the wiring harness on rubbing spots to the engine and frame.