Hi guys, my 2002 5.9 24 valve has some issues and I want to verify I am doing the correct things before proceeding. It runs poorly and surges, the temp gauge is going near full almost immediately, and the check engine light is on. There are several high voltage codes including (P0563 charging system, P1475 Aux 5 volt output, P1286 APPS supply voltage, P0113 Intake air temp sensor, P0118 ECT voltage, P0238 MAP sensor) all stating voltage too high. Now I also have the P0606 ECM/PCM Processor code. I did an alternator A/C noise test and it failed (otherwise the charging system seems normal). I am able to scan codes but can not communicate to get any data whatsoever. My plan is to replace the computer and replace the alternator. My questions are : does this seem to be the correct course of action and if so, which computer needs replacement, the one on the passenger side firewall, or the one mounted on the drivers side of the engine block. Thanks in advance for your help, much appreciated 

1 hour ago, Injunmark said:

P1475 Aux 5 volt output

 

ECM most likely took damage. P1475 will require the ECM to be rebuilt and repair the 5V generator for the sensors. 

 

1 hour ago, Injunmark said:

I did an alternator A/C noise test and it failed

 

This right here the excessive AC noise, damaged the ECM and the 5V generator internally. 

 

Edited April 14, 20205 yr by Mopar1973Man

That is the one mounted to the left side of the engine block, right? Not the one in the firewall

16 minutes ago, Injunmark said:

That is the one mounted to the left side of the engine block, right? Not the one in the firewall

'Correct, engine control module (ECM} on the driver's side of engine block, power train control module (PCM) is on the firewall.  You'll need to do the W-T charging system up grade as well.   Have the new alternator tested for AC noise as well, so are bad right out of the box.    

I don't know what the W-T charging system upgrade means. I can test the new alternator, no problem.

1 hour ago, Injunmark said:

I don't know what the W-T charging system upgrade means. I can test the new alternator, no problem.

 

All explained here...

 

The original...

 

 I didn't realize this could cause so much havoc. I need to do this ground mod soon!

46 minutes ago, Doubletrouble said:

 I didn't realize this could cause so much havoc. I need to do this ground mod soon!

I'm actually surprised that not too many did this mod. Seems that we keep pointing people in this direction weekly. It doesn't seem that important until you do it and then you go, crap I can't believe fiat did such a thing, bastards. 

Edited April 15, 20205 yr by Dieselfuture

 It wouldn't surprise me much. I used to work for a supplier for a company that rhymes with heep. Some of the stuff I saw them do I really don't know how they sell, especially for the prices they get.

 It all about saving a dime where ever they can. 

 

 I may stop and get the bolt and terminal ends I need tomorrow to get this done.

6 hours ago, Dieselfuture said:

I can't believe fiat did such a thing, bastards. 

I used to work for what is probably the best known construction machinery manufacturers on the planet, I was in major repair straight off the backhoe production line, problem was the whole deal was managed by people from the car industry and not the construction industry so decals were spot on, paint was car like, machine was rubbish, they sent 5 of us from the UK to Waco to fit 130 torque convertors and trans pumps to machines that had been shipped knowingly leaking, was there for a month putting that right, did over 800 all told before the problem was fixed, they also decided to buy steering obital valves from a "new" supplier... read chinese, 50% turned left on their own all of a sudden with no warning, over 2000 needed to be changed out

 They consistently trade safety and/or reliability to save a few dollars in production. It's sad but they all do it to some degree. 

 In our trucks we have (in my opinion from driving large semi trucks) the best diesel engine out there. I favor the 5.9 because I have one and I believe they are based off of the N14 Cummins used in highway trucks. (Again, my opinion) which are well known for reliability and longevity. Then Dodge kind of drops the ball with their part in the engineering with stupid things like this ground issue. The transmissions could have been beefed up more as well. I'm sure there may be more issues to, I am some what new to the Dodge Cummins platform so the only experience I have is with my own, talking with my buddy that has one and what I read on here.

 I aim to correct what I can to have a reliable, long lasting truck.

Edited April 15, 20205 yr by Doubletrouble
Spelling

3 hours ago, wil440 said:

they also decided to buy steering obital valves from a "new" supplier... read chinese, 50% turned left on their own all of a sudden with no warning, over 2000 needed to be changed out

I must of gotten one of them valves when I built my first monster truck lol, driving down the road and it just starts to turn for yha, good thing it was an old Chevy with no clock spring, or it broke already can't remember, anyway to go straight I constantly had to turn one way, can't remember which. Went to local combine scrap yard and got one from a 30 year old machine that worked great.