Technical Wiring Diagrams with wire colors

[SailorBob]

This is related to some issues I've been having for a while suspecting that my third party security system ( Ituran ) is causing me weird electrical issues.

The security system is wired into a bunch of stuff under the dash, including to the AV connector of the body computer. I've been loosing power to the dash and connection to the engine computer, and when I jiggle the wires at the AV connector I get power back. I'm assuming the problem is one of the power wires going into the body computer and I've identified via the x250 Training Manual pdf and the elearn software that pins:

eLearn - Contents

13 INT from F37

eLearn - Contents

17 +30 from F39 for NCL (Climate Control Node)

eLearn - Contents

46 +30 from F39 for CSA

These three pins look like the only three connected to fuses and I assume providing power. The problem is that I can find any actual wiring diagram or anything which says what color wire on the connector corresponds to what PIN on the NBC.

Of course the security company ( Ituran ) denies any liability for the problems and says I just have a general electrical problem.

Here's a pic of the mess I'm dealing with AV is the blue connector on the right:

 

[Davren]

If you have eLearn for the vehicle, the wiring colours are shown on the wiring diagrams as a 1 or 2 capital letter code adjacent the each wire.

Codes are attached.
.

 

[SailorBob]

I can't even find the wiring diagrams in the eLearn. Could you point me in the right direction? I've got the 2.3L

 

[Communicator]

Click on: English - 2.3L, then click on DUCATO or van ICON. Then click - Electrical Eqiupment - Electrical Functions.

Click on area of interest and click on wiring diagram.

Your problem will be that a connector will appear on several diagrams.

Scroll down to the connector that you are interested in, and then click on that.

You should get a table with the details of the wires on that connector.

 

[Davren]

I can't even find the wiring diagrams in the eLearn. Could you point me in the right direction? I've got the 2.3L

From the left blue menu select Electrical equipment.

Then from the central white menu select:
Electrical Function.
Then Power Supply and Earths.
Then Supply.
Then Wiring Diagrams.
.

 

[Anthony489]

Hi

In your main photo, the bit at the top is the B001 under-dash junction unit/fuses/relays. Immediately behind it is the M001 body control module, which joins directly to it by a multiway connector pair (Connectors X and Y)

M001 pokes down below B001, and along the bottom edge from left to right is Connector C, The OBD socket, Then Connector A (The 52 pin blue one you refer to as the AV connector).

A search in eLearn using the code M001A will bring up the pin allocations table which for the used pins includes the wire colour codes and the cable cross sectional area. There are four near-identical tables depending on the exact vehicle. Annoyingly, the functions of the wires aren't listed, just their destination.

In my copy of eLearn Pin 13 isn't listed for any version, but other components using this INT line from F37 are coded L (Dark Blue). This line supplies a handful of different components.
Pin 17 is listed as RN (Red/Black)
Pin 46 is listed as RN (Red/Black)

Given the diagram of the connector, you may be able to identify Pin 1 and count along the pin numbers as an additional confirmation that you have the right pin.

I sometimes find that the training manual is in error, possibly because it was produced quite early in the vehicles life and maybe things hadn't been finalised for production ! eLearn is generally OK

Looking at the standard of workmanship, and given that you have intermittent connections, I would be inclined to re-make all these joints properly, e.g by using solder and heatshrink.

 

[SailorBob]

What's really weird, is that I tried to start it today and had no power to the dash and tried wiggling the wires to no effect and while I was sitting thinking what to do suddenly power came back to the dash and I was able to start the truck - without me touching or doing anything...

There's ghosts or gremlins in this trucks electrical system.

 

[SailorBob]

If you have eLearn for the vehicle, the wiring colours are shown on the wiring diagrams as a 1 or 2 capital letter code adjacent the each wire.

Codes are attached.
.

I'm looking at those color codes and they seem to be missing some, like SV I don't see it. Also, the color list of pin 5 is SN, pink-black, isn't correct, looks more like pink-green... is there a table in the eLearn itself?

 

[Davren]

I'm looking at those color codes and they seem to be missing some, like SV I don't see it. Also, the color list of pin 5 is SN, pink-black, isn't correct, looks more like pink-green... is there a table in the eLearn itself?

S is on the list as pink. (Rosa)
V is on the list a green. (Verde)

So SV is Pink - Green.
.

 

[Anthony489]

Hi

The wiring colour letters are based on Italian, here is a list:


A (Azzuro) = Light Blue
B (Blanco) = White
C = Orange
G (Giallo) = Yellow
H = Grey
L = Dark Blue
M (Marrone) = Brown
N (Nero) = Black
R (Rosso) = Red
S = Pink
V (Verde) = Green
Z = Violet

If a wire is listed with 2 letters, the first is the main colour and the second is the tracer (stripe) colour.