[RaysF30N55]

Hello Everyone I need Help,but im sure its what i think it is.

Back Story:
I bought a 2006 325i with a crank no start issue dirt cheap, i though i buy it and fix it up for daily driver. previous owner had some one work on it already prior to me buying it.
He stated that they swap out the DME & CAS and key from junkyard car, still had the same problem, they replaced the relays, still the same problem. he just gave up and didn't want to deal with it.

My Efforts:

1. I put back the original DME & CAS & Keys try to fire her up just for giggles, yeah no luck lol
2. I double check all the fuses and relays in the cabin and engine compartment all is good.
3.check if there is fuel, pump primes and the rail has pressure.
4. check for spark i pulled the coilpack laid it on its side still connected, i put a flat head close to it and had my wife crank it to see if there is spark, and nope no spark at all
5. Check all grounds, all good
6.hook up INPA & ISTA+ cleared the code thinking it might work nope
7. re ran ISTA+ and pretty much tells me there is communication to the DME at all. Same thing with INPA gives me an error when i try to connect to the DME.

My opinion the DME is faulty, or maybe change the Junction box?

I'm out of idea's what else i can check

Screen Shots ISTA+
https://ibb.co/TBRvLs2
https://ibb.co/VjBM0Yj
https://ibb.co/P19jDHz
https://ibb.co/NYknQZp

[F31B48]

Have you actually tested to see if there is power and earth supplies to the DME as per the wiring diagram?

You would also need to test and confirm that the PT-CAN is functioning as this is how the DME communicates with the rest of the car

https://www.newtis.info/tisv2/a/en/e...supply/i4RGgA7

[gbalthrop]

You indicate you tested for spark and had NONE. It appears you also have NO Fuel supply based upon CED4 which indicates NO signal received by EKPS from DME. Do you have Steering Lock Warning Light on the Instrument Cluster? You almost certainly have NO Power Supply to the DME. Here is the TIS wiring diagram for DME Power supply for 2006 325i:
https://www.newtis.info/tisv2/a/en/e...-fault/i4RGgA7

Start by checking fuse F54 which supplies battery power (Terminal 30) to the DME at all times the battery is connected, so that the DME can "turn itself on" by activating the DME Main Relay (K6300) when Ignition is switched ON. The DME Activates the DME Main Relay (Terminal 87) by supplying a Ground via Pin #13 of Connector X60005 to the Relay Electromagnet, via White/Gray wire, and the Main Relay then supplies power to fuses F01 through F04, plus F06.

So if F54 is intact, test for 12V+ at Pin #1 of Connector X60003. Then apply a Ground Jumper to Pin #4 of Connector X6300, the White/Gray wire providing DME-switched Ground to Relay Electromagnet, and see if Engine fires, or you at least get power (12V+) at fuses F01 through F04. With that ground jumper applied, the DME will be powered via fuse F03, so you SHOULD be able to now connect INPA or ISTA to DME and read any codes saved in DME.

If you have already swapped DME's then you are PROBABLY more familiar with the connectors & Main Relay Location than I, but here are TIS Installation Locations which you can get links for when you click on a BLUE Component ID# in the TIS Schematic:
https://www.newtis.info/tisv2/a/en/e...i-lim/H2p1xfX3
https://www.newtis.info/tisv2/a/en/e90-325i-lim/SNEe0ZE

You might also try using INPA > Functional Jobs > F2 Identification to see if "12 DME MSV70" appears in Module List, and also INPA > Functional Jobs > F4 Fault Memory, ALL Modules, to see what DME Fault Codes are listed. I attach a "Tutorial" that suggests how to get basic information using INPA "Functional Jobs", and how to save ScreenPrints as jpg files you can attach here to show INPA Screens. Same would apply to ISTA.

Please let us know what you find doing the above, and we can suggest "Next Steps".

George

[gbalthrop]

Originally Posted by EvaBmw

Have you actually tested to see if there is power and earth supplies to the DME as per the wiring diagram?...

Excellent point, as we OFTEN take Grounds for granted, and they are equally as essential as Power or B+ to a completed CIRCUIT. Here is Installation Location of X6454 where the Brown DME Ground wires connect to the chassis:
https://www.newtis.info/tisv2/a/en/e90-325i-lim/SCFm13F

George

[RaysF30N55]

sorry guys, i was out of town for a funeral. I had a chance to work on it today. so this is what i did

I Checked fuses for 12v
F4= good
F11,16 =good
F37,38 =not used
F39 = good
F1,3= Not used
F2= good
F54=good

I check the ground pin#13(White&Gray) on connector x60005 on the DME pin is fine, i even added a ground wire, it triggered the relay clicking sound, i tried to start it no luck i even grounded the pin #4 on X6300 relay nothing also. I also check pin #1 on connector x60003 for 12v its good. i test the power wires red ones that connect to the DME with an ohm reader and they have power.

side note can someone tell me what color wires the DME relay are? im pretty sure i tested the right one, hard to tell because the previous owner pulled all the wire out from the DME box, so it looks like a bowl of spaghetti

also one thing when i put car ignition on position the fuel pump stays on doesn't turn off. I pulled the spark plug to see if its wet and nope its dry.

I wonder if its the junction box that is bad, i see some tyco relay behind the cover in the junction box, maybe that's bad?

I dont know what else to check

[F31B48]

Originally Posted by e90squad

sorry guys, i was out of town for a funeral. I had a chance to work on it today. so this is what i did

I Checked fuses for 12v
F4= good
F11,16 =good
F37,38 =not used
F39 = good
F1,3= Not used
F2= good
F54=good

I check the ground pin#13(White&Gray) on connector x60005 on the DME pin is fine, i even added a ground wire, it triggered the relay clicking sound, i tried to start it no luck i even grounded the pin #4 on X6300 relay nothing also. I also check pin #1 on connector x60003 for 12v its good. i test the power wires red ones that connect to the DME with an ohm reader and they have power.

side note can someone tell me what color wires the DME relay are? im pretty sure i tested the right one, hard to tell because the previous owner pulled all the wire out from the DME box, so it looks like a bowl of spaghetti

also one thing when i put car ignition on position the fuel pump stays on doesn't turn off. I pulled the spark plug to see if its wet and nope its dry.

I wonder if its the junction box that is bad, i see some tyco relay behind the cover in the junction box, maybe that's bad?

I dont know what else to check

Connect the ground wire again that activates the DME relay, then check if you have power at pin 2 (orange) of X60003. Is there 12v there?

[RaysF30N55]

I'm going to check that tomorrow.

I just replaced the junction box and still the same problem

[F31B48]

Originally Posted by e90squad

I'm going to check that tomorrow.

I just replaced the junction box and still the same problem

If your car is a 2006 then the DME relay is in the ebox with the DME not in the junction box.

The relay is blue.

The wire colours for the DME relay are:
Pin 6 RED - 12v power supply from battery
Pin 4 WHITE/GREY - switched earth controlled by DME
Pin 2 & 5 ORANGE - 12V output to fuses in ebox. Fuse 3 (20a) powers the DME.

[ctuna]

I never see and actual battery voltage measurement in
any of this . Of did I miss it?

If its been sitting in a junkyard Rats could have eaten the wiring.

[RaysF30N55]

Originally Posted by EvaBmw

If your car is a 2006 then the DME relay is in the ebox with the DME not in the junction box.

The relay is blue.

The wire colours for the DME relay are:
Pin 6 RED - 12v power supply from battery
Pin 4 WHITE/GREY - switched earth controlled by DME
Pin 2 & 5 ORANGE - 12V output to fuses in ebox. Fuse 3 (20a) powers the DME.

thank you, I'm going to work on it in a little bit.

Originally Posted by ctuna

I never see and actual battery voltage measurement in
any of this . Of did I miss it?
If its been sitting in a junkyard Rats could have eaten the wiring.

no it wasn't sitting at a junkyard, I haven't take any pics of the voltage but will do today

[RaysF30N55]

Ok so I pulled the harness plug from the dme and physical removed the pin 13 dme ground to expect it clearly, the pin is fine from any damaged or corrosion. The dme relay is fine tested both orange wires both are 12v i didnt have to jump the ground, works just fine when key is on, I tested all relays again all 12v. I tested the power wires that plug into the dme 2 have 12v the other 2 5v for the vanos. I even tested the harness to see if it powered, I test the map, air, water etc all show 5v.

I recheck the fuses they all have 12v , I'm leaning towards the dme is dead. Is there anyway to test the dme with ohm reader to see if it's dead?

I have another question...

The previous owner tried to replace the dme & cas with matching fob and didn't start, im sure the reason was that it has to be programed with the rest of the modules to start right?

I want to send out the dme to get checked out to see if truly dead

[RaysF30N55]

[RaysF30N55]

here are some pictures of the reading 12v

[F31B48]

So it's good coming out of the relay, which is great but now you need to keep testing that orange wire to the DME.

You need to check for 12v at fuse 3 (20a inside the ebox with DME), then make sure that pin 2 of DME connector (orange) x60003 has 12v also.

And also check earths if you haven't already

[RaysF30N55]

Originally Posted by EvaBmw

So it's good coming out of the relay, which is great but now you need to keep testing that orange wire to the DME.

You need to check for 12v at fuse 3 (20a inside the ebox with DME), then make sure that pin 2 of DME connector (orange) x60003 has 12v also.

And also check earths if you haven't already

I’m going to send out the DME & CAS to get checked out

[jamaicaLemons]

Not sure if you tried this already but:
Check the power distribution box on top of the battery. Its possible that one of the integrated fuses blew
Also check that your fuses were put back in the correct spots in the fuse box

[FREE90]

Did you figure out the issue e90squad?

I'm having a similar issue and I would like to know your solution.

[gbalthrop]

Originally Posted by FREE90

Did you figure out the issue e90squad? I'm having a similar issue and I would like to know your solution.

Is your "similar issue" that your Starter Cranks the engine but the engine does NOT Start?
If you have a Scan Tool/Diagnostic Software, please identify make/model?
Can your Scan Tool or Diagnostic Software "Communicate" with the DME?
Read Fault Codes in DME?
View Live Data in DME?
What Fault Codes are read in the CAS or DME Modules?
Do you have a Multimeter to test for Voltage?
What are Last-7 Characters of your VIN?

There are MANY different things that can cause "Crank, NO Start" condition. Wondering what someone else found/ was told by some "Random Mechanic" with a "similar situation" is NOT likely to solve YOUR PARTICULAR issue.

If you have a multimeter and can test voltage, please provide answers to questions above and someone can suggest how YOU can actually diagnose YOUR issue.
George

[worldz]

Originally Posted by RaysF30N55

I’m going to send out the DME & CAS to get checked out

Did you get the dme and cas checked out?