120 ohms at Deutsch connector

[Rawze]

(01-13-2025 )J_Rok Wrote:  Hello everyone I’m looking for some advice on how to get back down to 60 ohms at the triangular connector right at the engine. It’s a 2014 Peterbilt 2350 de mandated, everything is in tact emission wise including the egr cooler. (The exhaust by passes all the cans.) The truck still has the VG turbo on it and working. I’ve looked all over for the second terminating resistor that’s supposed to be near the def tank or dpf filter. I found a blue plug near the DEF tank but no resistor nearby. I’m wondering if I can buy a resistor and wire it in myself somewhere after the VG turbo? Or what would my options be? Just don’t want to fry a turbo actuator. I’ve attached a couple pics of what I found near the DeF tank where I have it unplugged both sides of that connector go into the ball of tape in the first picture, could the resistor be in under that tape? Also I had 120 ohms at the blue female plug but open lead at the male plug.
Any help is greatly appreciated thanks!

where exactly the aftertreatment can#2 j1939 terminating resistor is on a vehicle can vary.

No, you cannot just put it right at the turbo. The terminating resistors go at each end of the network.

Think if it like a clothes line with a post at each end holding it up. A post (resistor) goes at each end of it... and each article of clothing is a device (turbo, ecm, egr valve, etc.) connected to it along its length.

The turbo controller itself has one of the terminating resistors built in, as it is at one far end of the line. The other one is like you said, down under the vehicle usually near one of the after-treatment components.

Since some moron unplugged the whole harnesses to those cans, the next best place to put it would be to add it right near where the harness was disconnected going down to the systems that are now unplugged/missing. You will have to track down the network twisted pair and add it (or near) at that connector.

Instead of any old 120-ohm resistor, I would find one on Amazon, or at an auto parts store, with proper plug/socket .. and use that .. so that it has a proper delphi connector that is weather/salt/corrosion sealed, etc.