Problem connecting to C15 in Peterbilt

[Khein]

Im having some problems getting connected to a C15 engine placed on a Peterbilt 387.
Im using Cat ET and Cat Com Adapter 3, but my first problem is that the deutsch connector in the cab is different than the one I have for Caterpillar (the one in the cabin is like the Cummins connector).
I have find the electrical diagrams and jumper wires in order to connect to my Cat connector but I have not been able to connnect to engine.

Is there any protection or restriction in the engine that is not allowing me to connect?

[mathura]

Im having some problems getting connected to a C15 engine placed on a Peterbilt 387.
Im using Cat ET and Cat Com Adapter 3, but my first problem is that the deutsch connector in the cab is different than the one I have for Caterpillar (the one in the cabin is like the Cummins connector).
I have find the electrical diagrams and jumper wires in order to connect to my Cat connector but I have not been able to connnect to engine.

Is there any protection or restriction in the engine that is not allowing me to connect?

You can make an adapter from cat 9 pin to peterbilt 6 pin use the diagrams correctly and you will connect. I have done this many times.

Alternatively if you have a nexiq or dearborn interface they will also work with the cat ET

[Khein]

You can make an adapter from cat 9 pin to peterbilt 6 pin use the diagrams correctly and you will connect. I have done this many times.

Alternatively if you have a nexiq or dearborn interface they will also work with the cat ET

The thing is that in the truck I have a 9 pin connector (with a key, like Cummins connector) and then I have the Cat 9 pin connector to the Cat Com Adapter 3 (i dont have nexiq or dearborn interface).
I have try to make an adaptar from CAt 9 pin to pterbilt 9 pin connector but have not succes (trying different diagrams).

Also I have found a 3 pin connector on the engine, It seems to be a data link connector, Im suppose to be able to connect to it too?

On the other hand Im buying the adapter cable from CAT 1574829. Do you know if with this I will solve my problem? I suppose to be able to connect with Cat ET?

[mathura]

The thing is that in the truck I have a 9 pin connector (with a key, like Cummins connector) and then I have the Cat 9 pin connector to the Cat Com Adapter 3 (i dont have nexiq or dearborn interface).
I have try to make an adaptar from CAt 9 pin to pterbilt 9 pin connector but have not succes (trying different diagrams).

Also I have found a 3 pin connector on the engine, It seems to be a data link connector, Im suppose to be able to connect to it too?

On the other hand Im buying the adapter cable from CAT 1574829. Do you know if with this I will solve my problem? I suppose to be able to connect with Cat ET?


Yes with the cat cable that you are going to purchase will work. Most trucks communicate on the ATA data link, that is J1708 protocol.
Look at the pins of plug on the truck to determine if its J1708, and another thing see if et is set up for dual communication.

[acumminsman]

I use a cummins inline 6 and its flawless. works with everything.

no problems yet. Make u up a adapter cable, the plans are probally on here somewhere.... Best site EVER!!

[Khein]

I have allready tried with Cummins inline 5 but I have not been able to connect with Cat ET.

I guess I will try to make an adapter (again) but for the moment I have not been able to

[mathura]

I use a cummins inline 6 and its flawless. works with everything.

no problems yet. Make u up a adapter cable, the plans are probally on here somewhere.... Best site EVER!!

Friend does it works on Mack

[acumminsman]

Friend does it works on Mack


So far it does.... i have 6 9 and obd2 cables for it. thats why i like it so much. versitile.

[Khein]

Guys I have tried all possible connections, ways or ideas I have had.
Please look at the image attached to see what I have done to connect (without succes).
As you will see I have try to jumper wires from cabin connector pin F ang G to Cat Com Adapter cable pin J and H (did not work), also try to jumper wires from cabin pin C and D to Cat Adaptar pin G and F (also did not work).

What im doing wrong? The CAT 1574829 adapter cable I bouhgt will take 1 week to arrive and Im not sure if it will solve my problem.

Please help me here.

[mathura]

Guys I have tried all possible connections, ways or ideas I have had.
Please look at the image attached to see what I have done to connect (without succes).
As you will see I have try to jumper wires from cabin connector pin F ang G to Cat Com Adapter cable pin J and H (did not work), also try to jumper wires from cabin pin C and D to Cat Adaptar pin G and F (also did not work).

What im doing wrong? The CAT 1574829 adapter cable I bouhgt will take 1 week to arrive and Im not sure if it will solve my problem.

Please help me here.

QUESTION: Did you check your set up of ET if it is set for dual data link, I have been communicating with several Trucks with CAT Engines.

[Khein]

QUESTION: Did you check your set up of ET if it is set for dual data link, I have been communicating with several Trucks with CAT Engines.

WhAt do you mean by dual data link? Which is the option for that?
I have et setted up for cat com adapter 3. Is that what you mean?

[Khein]

QUESTION: Did you check your set up of ET if it is set for dual data link, I have been communicating with several Trucks with CAT Engines.

Allready checked and my Cat ET is set for dual data link (that opcion is checked).

What other thing can I checked?

[mathura]

Allready checked and my Cat ET is set for dual data link (that opcion is checked).

What other thing can I checked?

Use the schematic for the ECM and connect directly to the J1708 data terminals. Do not use the cab connections.

Is the engine starting and what probelm do you have with the engine.

[eric486]

Mathura has a very good point, if the engine won't start you may have a problem with the ecm or power to the ecm. When some ecm's go bad the truck won't start and you'll have no communication with the ecm. You can have the same problem if you don't have any power going to the ecm. You could try to hook up to the abs ecu through the datalink to verify that the adapter you made is working properly also. Or try to connect with Insite Fault Viewer if you have it.

[MechanicMaster]

first verify is the warn engine light come on for few seconde when you turn on the key. It can be a problem with the wire between exterior of cab and ecm. You can check wire with ohm-meter so you have the plug right there on ecm oem side? Sometime I need to close ET and disconnect wire adaptor and cycle the key before retry and it work. Give us news about it.

[acumminsman]

I worked on a kw t400 with a cat c13 in it and couldnt for the life of me get it to start/connect. NO POWER TO THE ECM>>>.... u might have to get scematics for ecm and build u a breakout cable. thats what i did. power and data link wires are all u need to pinout....

[Khein]

guys, I have no problem on the engine. It starts and it seems to run OK.
The truck came for a clutch problem but the client want to check the error codes.
This is the first time we have an american truck here (there arent a lot of them in our country) and we thought we could communicate, but still so far we have not been able.

I will try to comunicate directly to the ECM but I think there is another problem here.
In the engine I see a 3 pin connector with J1939 information that has a resistance, how Im suppose to connect there? using wich cable?

[Khein]

I worked on a kw t400 with a cat c13 in it and couldnt for the life of me get it to start/connect. NO POWER TO THE ECM>>>.... u might have to get scematics for ecm and build u a breakout cable. thats what i did. power and data link wires are all u need to pinout....

If I disconnect J1 connector to the ECM and connect only power and data link pins, I have to been able to connect to ECM?
I have try this out in several ECM and be able to connect in some of them, but for example in a C6.6 I have not been able to this this (guess Im missing some important connections (accelerator, pump or something important to start ECM)

[jctech]

If I disconnect J1 connector to the ECM and connect only power and data link pins, I have to been able to connect to ECM?
I have try this out in several ECM and be able to connect in some of them, but for example in a C6.6 I have not been able to this this (guess Im missing some important connections (accelerator, pump or something important to start ECM)

To connect direct to the ECM using J1939, you need to have a single 60 ohm resistor, (or 2x 120 ohm resistors) in the datalink.
Is your version of ET new enough to support the engines you are trying to connect to?

[Khein]

To connect direct to the ECM using J1939, you need to have a single 60 ohm resistor, (or 2x 120 ohm resistors) in the datalink.
Is your version of ET new enough to support the engines you are trying to connect to?

Im using ET 2011A.
Ok, I understand about the resistors. But to connect in the cab, do I need the resistor too?