Cat d5m ecm

Nige · Apr 5, 2020

Mark’s right. The pinouts I posted above will work on an ADEM-II engine ECM plus on most machine ECMs from that same era because they also had the same pinouts as the ADEM-II engine ECM. For example from the schematic of your D5M the machine ECM has exactly the same pinouts as an ADEM-II including both the Cat & ATA Datalinks.

If you have a S/N for the C12 or even just the prefix then please post it up. The correct pinouts can be identified from the electrical schematic.

Mark250 · Apr 5, 2020

Hi guys I tried to copy a page from a previous thread but I cant get it to look the same
the title of the thread is CAT D400E data link/ECM problems
here is a copy below if some one could tell me how to copy correctly that would be great
ALWAYS CONFIRM PINOUTS WITH SCHEMATIC

hi moderators if you think this Reply should be moved please do so
Mark
↑
hi mark, please could you show me how to connect the et directly to the ecm?? that would be really handy.
Click to expand...
Hi mrappels,it is quite easy to power up an ECM via a different power source than the machine. there are a couple of things to be aware of
1- the ECMs will run on either 12v or 24 volt
2- even though multiple power supply's and returns are indicated on electrical schematics only one B+ and one B- is required to operate the ECM for test purposes
3- generally 5 wires are needed for the ECM to communicate with ET
B+, B-,key switch B+,CDL + and CDL -
4- be aware that on highway trucks use different diagnostic plugs than machine diagnostic plugs
5- Cat uses a number different ECM's and some even look the same but the connection pin outs are different
Here is a list of common ECM's
ADAM 2 - has two forty pin connectors used ,as engine ECM
MAC- has one or two forty pin connectors ,looks the same as ADEM 2 ECM, used as machine system ECM
ADEM 3- has two 70 pin connectors used as engine ECM
ABL- Has one or two seventy pin connectors, looks the same as ADEM 3 ECM, used as machine system ECM
ADEM 4- has one seventy pin connector and one,one hundred and twenty pin connector, used for engine and machine systems
ADEM A4-E2 Has two 64 pin connectors used as engine ECM on later common rail engines (Perkins/Mitsubishi)
for the ADEM 2 ECM pin outs
B+ to pin#4 also connect to diagnostic connector pin#A
B- to pin#5 also connect to diagnostic connector pin#B
CDL+ to pin#9 also connect to diagnostic connector pin#D (green)
CDL- to pin#3 also connect to diagnostic connector pin#E (brown)
switched input B+ to pin#6
For MAC ECM
B+ to pin#1 also connect to diagnostic connector pin#A
B- to pin#2 also connect to diagnostic connector pin#B
CDL+ to pin#9 also connect to diagnostic connector pin#D
CDL- to pin#3 also connect to diagnostic connector pin#E
switched input B+ to pin#40
For ADEM 3 and 4 ECM (engine)
B+ to either 48,52 or 53 also connect to diagnostic connector pin#A
B- to either 63,65 or 67 also connect to diagnostic connector pin#B
CD+L to pin#8 also connect to diagnostic connector pin#D
CD-L to pin#9 also connect to diagnostic connector pin#E
switched input B+ to pin #70
For ADEM 3 and 4 (machine)
B+ to pin#1 also connect to diagnostic connector pin#A
B- to pin #2 also connect to diagnostic connector pin#B
CDL+ to pin #8 also connect to diagnostic connector pin#D
CDL- to pin#7 also connect to diagnostic connector pin#E switched input B+ to pin #58
for A4 E2 ECM
B+ to pin#1,2,9 or 10 also connect to diagnostic connector pin#A
B- to pin #7,8,15 or 16 also connect to diagnostic connector pin#B
CDL+ to pin #23 also connect to diagnostic connector pin#D
CDL- to pi #24 also connect to diagnostic connector pin#E
switched input to pin#40

some cat part numbers that may be useful
diagnostic connector P# 8T8736
A3 ECM connector 160-7689
sockets for above 9x3402
A2 ECM connector 3E6286
A3 ABL ECM connector 160-7690
MAC ECM connector 101-0205
A4E2 ECM connector 245-1042
sockets for above 267-9572
here is some screen shots of ECM ET stand alone Data
Mark250, Sep 3, 2017 Report
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Mark250Senior Member
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the on highway truck ECM's and some machines i.e. D400E communicate to ET via the ATA protocol. in this case the CAT data link is not used
the ECM pinouts will be in the same position but the connections to the diagnostic plug will be different (not using the on highway adapter)
For ADEM 3 and 4 ( Engine ECM )
B+ to pin# 48,52 or 53 also connect to diagnostic connector pin#A
B- to pin# 63,65 or 67 also connect to diagnostic connector pin#B
ATA+ to pin #8 also connect to diagnostic connector pin#J
ATA- to pin #9 also connect to diagnostic connector pin#H
key switch B+ to pin#70
Mark

Mark250, Sep 3, 2017 Report
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rmllarue91Senior Member
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Messages:
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Occupation:
field technician
Location:
northeast pa
Hey guys I have a d400e 2yr00259 that had lots of electrical issues most went back to ground and harness issues. I would clean and fix all grounds and inspect harness then

Tyler d4c · Apr 5, 2020

I was going off the correct diagram for the c12. I'd like to see that thread I'll search for it

Nige · Apr 5, 2020

Here's the thread - https://www.heavyequipmentforums.com/threads/cat-d400e-data-link-ecm-problems.68281/

Tyler d4c · Apr 5, 2020

Nige said:
Here's the thread - https://www.heavyequipmentforums.com/threads/cat-d400e-data-link-ecm-problems.68281/

I'll have to study this very closely I'll report back

Tyler d4c · Apr 6, 2020

Back to the d5m I've found a ecm with the correct number but it is currently programmed for a 140h grade is it possible that they can program it for the d5m with out to much trouble

Nige · Apr 6, 2020

There used to be. It requires factory passwords to make the software change. If a dealer TC called it in passwords were available over the phone.
AFAIK that service is no longer availabble. You could ask your dealer I suppose.

Tyler d4c · Apr 6, 2020

Nige said:
There used to be. It requires factory passwords to make the software change. If a dealer TC called it in passwords were available over the phone.
AFAIK that service is no longer availabble. You could ask your dealer I suppose.

I talked to them about it there where unsure on they seemed to think of it's a good box then it would be ok.

Nige · Apr 6, 2020

The other problem is that it requires the dealer version of ET to actually carry out the flash upload. That limits the options of who can actually do the reflashing.

Tyler d4c · Apr 11, 2020

Good news I got my break out harness to work. Bad news still no ecm for the dozer.

Tyler d4c · Apr 21, 2020

Any idea what a blinking hour read out on the dash means cant seem to find it in the book there is no ecm in the machine currently I just playing around fixing other things and noticed it was blinking

Mark250 · Apr 22, 2020

i would say it is looking for a signal from the non existent ECM. as the ECM supply's data to the monitor via the cat data link

Tyler d4c · Apr 22, 2020

Mark250 said:
i would say it is looking for a signal from the non existent ECM. as the ECM supply's data to the monitor via the cat data link

I was kinda thinking that I work before with the mad box hooked up I guess I'll just worry about it once I get the ecm if it's still goofy.

Tyler d4c · May 7, 2020

Got the used new to me ecm in and got the machine moving and all calibrated up the dash is still only blinking the hours. I'm thinking it's a wire problem. Found a leak between the engine and Tc got to fix that up bit I'll get there. Thanks again for the help.

Cat d5m ecm

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