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For reference. This is from a 08-10 MY but your pump is very similar.

The power comes from the U2 fuse, and yes you should have 12v on one leg and the other leg goes eventually to the ecu on the ground side. If you jumped 12v to the switch and it worked then I would say your issue is on the power side not the ground side. It goes through the pass through...

I appreciate your extensive details, unfortunately I do not look the fuel in fuel filter housings as way to 100% diagnose a fuel issue. It is hard to follow your diagnosis steps and I am assuming by “processor “you mean fuel filter. I have seen rags and other items in tanks cause this issue. I...

It is located behind the cab, passenger side frame rail. It has a 2 bolt cover and actually I think it is secured by 3 bolts. The harness connector is held on with a single 8mm bolt. It should have 80 pins in the TCM.

Have you attempted to bypass the suction side of the system as described in the document I attached? It will essentially split your problem in half with one test. If it runs fine and no codes set ,you will know the issue is from the inlet of the pump to the tank. If it does not get better then...

It went out today with the other work mail via USPS. Hope if fixes you issues.

I would first remove the fuel filter and make 100% sure the orange flap valve is there, this is the anti-drain back valve. I’m not 100% sure it would come on a new filer assembly. If it is there make sure there is nothing holding it open. Re-install the filter, get some clear tubing, remove fuel...

Hino fanatic what year is your truck and where is your fuel filter located?

It wont upload, I tried 2 times. The file Is to large. PM me your email or phone # and ill send the pic to you.

I only have one and do not see it listed in the connector database. Pm me if interested. $15 with s/h.

10-4. I’ll lool when I get to work tomorrow.

To be sure you, are talking about the connection on the harness and not on the VNT itself? I may have an extra, I’ll look and if not I think I have the connector part number in my cheat sheet. It will be Monday afternoon at the earliest before I get back to you.

The P141F is a generic code for a burner issue. The P2030 code essentially could be anything with the burner system, AIr, fuel, spark.i t needs all 3 or it will misfire. Get that burner event log and it will hopefully give me a little more to go by than just a P2030 code.

pics

Are you using DX2 or a generic scanner? Check EVERY!!! fuse in the dash for power and that there is a fuse installed in EVERY cavity that has it. Inspect the relay pictured. It should receive a signal from the switch on the signal side of the relay. If you remove the relay nd look the gold...

Ok great, did you ever get a chance to look at the burner event log? I got the vin and will check a few things tomorrow on my work laptop.

Make sure the engine rpm is 980 or above, If it has an ABS light on it will disable activation from the switch. Check the relays and verify they are receiving and distributing power.

You have the most fuel efficient Hino...EVER! Seriously though, sometimes it is below the ring that holds the top bowl on. When your filter gets dirty or water accumulates the fuel level rises. If you had a hard start issue the anti-drain back flap valve is under the fuel filter, if this was...

Ok a few things I need. In need you to 100% verify the mantle is not cracked and the orifice is not plugged. The 1 3/8 adapter fitting is tight, but it will come out. I use a 1 3/8 deep socket on a breaker bar and a cheater pipe to get them out. They are stiff,but you won't break anything. That...

Ok so reguarding the sensor reading on the 11-13 models the burner outlet sensor does not read correctly. In 2014 they fixed the issue. I honestly never look at individual temps other than flame temp because I use the graphing macros. It basically imports all the regen data and generates a...