According to FSM your relay is on the TIPM board.

On jeeps there was a fuel pump recall in which the TIPM relay was bypassed and an aftermarket replaceable relay (also known to fail) would be installed. But that was on 2012-2013 models.

https://static.nhtsa.gov/odi/rcl/2015/RCRIT-15V115-2720.pdf

TIPM Fuel Pump Relay Solutions

verticalvisions.com

 

I have a 2015 that started having this same issue. Checked for power at fuse F70 in TIPM and good power. To be safe, tried a new bypass cable. Still no start. Took vehicle to repair shop, and said they suspect it is the fuel pump. They are telling me that the entire exhaust system has to be dropped to get the fuel tank out to replace the pump.
Is this correct? Saying the tank is a "horseshoe shape" ....

 

I have a 2015 that started having this same issue. Checked for power at fuse F70 in TIPM and good power. To be safe, tried a new bypass cable. Still no start. Took vehicle to repair shop, and said they suspect it is the fuel pump. They are telling me that the entire exhaust system has to be dropped to get the fuel tank out to replace the pump.
Is this correct? Saying the tank is a "horseshoe shape" ....

I am in the same situation. The F70 bypass did not work. I need to tow the vehicle to the dealer now.
They will need to evaluate this issue and fix a recall. Not sure about the $ impact.
But yes, its correct the entire exhaust needs to be dropped.

 

UPDATE!
The fault was found, and could certainly be something for others to look for. Apparently, on some vehicles, there is a connector within the harness on the underside frame, that has leads going to the fuel pump. If this connector was not fully engaged, over the years, the extra strain (electrical) could cause this connector to get hot, and eventually cause an intermittant connection. The specific lead in question is indeed the power lead going to the fuel pump motor itself, so even if voltage is seen at the fuse in the TIPM, it is not getting to the pump motor, thus, the engine cannot function (start or run) ......
My mechanic bypassed this connector and there has not been any problem since.

 

I read your post from last year. I was just curious. Where was the wiring bad? Did you have to drop the tank to jump the harness? Thanks!

 

Good to know.

Not sure about the durangos but on challengers/chargers there is a TSB on the fuel pump connector. Apparently the old harness configuration (B+ and Ground right next to each other) would cause the fuel hat plastic to melt (might be due to electrolysis) hence a new style connector is spliced in.

https://www.challengertalk.com/attachments/08-032-17-pdf.1057563/

Actually just checked the fuel pump module connection on the durango and it appears ground and B+ are spaced far apart.

2015 fuel pump module connector.

 

Took the Dodge Durango to the Dealer and following is the feedback I got:

• Powertrain Control Module needs to be replaced because there is no signal/connectivity as per them.
• Then further evaluation will be carried out why the Car does not start.
• $225 for checking the problem.
• $1,500 for changing Powertrain Control Module.

I am thinking of taking the replaced Powertrain Control Module and sending it to FCA (Now Stellantis) engineers. I have worked for them 5 years.

How can a car lose its Powertrain Control Module at 60,000 miles. Its very likely that the dealer is fooling me as I towed in my Car. Very disappointed.

 

good luck with stellantis they could care less they will destroy the company

 

UPDATE! The fault was found, and could certainly be something for others to look for. Apparently, on some vehicles, there is a connector within the harness on the underside frame, that has leads going to the fuel pump. If this connector was not fully engaged, over the years, the extra strain (electrical) could cause this connector to get hot, and eventually cause an intermittant connection. The specific lead in question is indeed the power lead going to the fuel pump motor itself, so even if voltage is seen at the fuse in the TIPM, it is not getting to the pump motor, thus, the engine cannot function (start or run) ...... My mechanic bypassed this connector and there has not been any problem since.

How did he bypass it?

 

How did they bypass it?

 

This reminds me of the new fuel pump connector on the 2011-2016 challengers. The old design would cause the power lead to heat up and cause a leak but I don't recall folks having startup issues?

Fuel pump & wiring harness design problem

I know I have gone on ad naseum in the past about checking your fuel pump’s wiring harness connector for signs of overheating (and applying the fix if found), but it bears repeating: if you are having issues with the fuel system, and you are still running the original pump (primary unit; driver...

www.challengertalk.com

Wonder if it is the connector on the pump itself or to the fuel system delivery harness (connects to the under body harness)?