[i.rosca80]

I am trying to figure out what the violet wire on pin 1 on the ICM connector does.

According to the wiring diagram, this is most likely a fused 12V voltage source. Digging some more through the wiring diagram, the wire is described as "Extended D-feed"

What does that mean? What does the D stand for? What is being extended? What is being fed? We will never know...

What I am interested in knowing is if this is a regulated voltage source or if it is straight from the battery but with an inline fuse (F5).
I want to relocate the ICM and I want to know if I can take any 12V line to power it, which can in fact be anywhere between 9V and 14V and can experience transients and surges, or if it has to be a stable, regulated 12V.

 

[i.rosca80]

EXT. D = Extended electrical distribution. 53/454 powers up other modules that are not installed on all car markets.
XC90 and other Volvo's are prewired using 53/454 for different options. Pull up the wiring diagram, search for 53/454. It will list each page the 53/453 is used. You can supply ICM pin A1 with any 12 volt source. Below are different wiring diagrams using 54/454. RTI is not used in the US Market. Rear Entertainment is a dealer installed option.

View attachment 187925
View attachment 187926

View attachment 187927
View attachment 187931

View attachment 187928

View attachment 187929

Thanks for the explanations and the pinout.
Where did you get the pinout / signal information from? I can't seem to find that page in the wiring documents I'm finding online. Is it from VIDA?

 

[i.rosca80]

Thanks for the details.
I already have a copy of VIDA up and running. Every car owner should have the possibility to own the OE diagnostics tool for his vehicle, in my opinion.
I just did not know that I had to look the up the pinout on VIDA. I thought that's what the wiring diagrams were for.

Thanks again for the info.