Rod knocking after pulling trailer up steep hill

Lower sensor has 5 volts going to it, and that sensor was changed. Checking the rest.

 

So if you look at the diagram, there is a junction connector that splits 5v power between 4 sensors. LP sensor is a white wire. So you need to trace to a junction connector to see if you can see a damage to a beige wire. This is the sucky part. May need to unwrap harness to see wires.
I have no clue where that j15 connector is

 

Hi @caribe makaira. Any ideas where J15 connector is located? Op is missing 5V in beige wire for HPF sensor. LPF sensor has 5 V.

 

Not near as good at this as Caribe but it appears to be over near the ECM, on the engine harness after it enters into the cab according to the diagram.

 

Okay, here's what under the glove box:



We pulled the ECM out to get some room, trying to track down 15. Here's a pic of the new harness (the one not installed, from the newer truck):



Looks like the new harness and old harness are a little different, maybe that's the issue? I guess that'd mean we'd have to swap sensor and tube? Trying to track down what (if any) wires are different going to the high pressure sensor.

 

You need to look for 22 pin connector. It is not ECU connector.
Pin 13 should have beige wire.
It should be tight to the harness coming off 2 ECU connector from the left.
In diagram, the light green wire marked as VC.

 

Locate the (passenger side) firewall harness large plug, it's first connector taped to harness bundle before it branches off.

 

The connector J15 mates to a junction type opposite. Not to any module directly. The mating connector looks like a cap.

 

Found it! Here's the plug:



Then we found a pin/wire broken inside the fuel pressure connector and fixed it!



So now that code is gone and the motor revs up!

But now there is a new code for fuel injector circuit, I'm guessing it's a broken pin in the wire going to 2,4,6 bank of fuel injector?

 

Getting closer . . . .

 

Yeah, it runs, just misses a little on those banks. You can drive it now though

I've heard those wires/pins are flimsy.

 

looks for EJ1 connector. Port injectors on B2 are connected via it. Also check individual connectors.

 

Will check the voltages next I think. Not sure which pins should have which voltages.

 

The injector's connector pin 1 to body ground should be a battery voltage.


So is the wire on EJ1 connector. Look closely at the diagram to see which pin and wire color is corresponding to injector's connector

 

WAAAAAAHOOOOOO!

 

@silverstr8p.

note, pin1 on injector's connector is coming from the battery, pin2 is control wire from ECU

 

this connector is for Bank 1. Look for other

 

wait, so bank 2 is the problem? Is passenger side bank 1 or 2?

 

Passenger/right is bank 1, driver/left is bank 2