Need help with pin out of junction connector

Roger88 · Oct 1st, 2020, 17:53

Hi all!

Been quite busy getting on with the Volvo wagon recently!

I'm looking to remove the Ecu wiring from the car as I will be having a Link Ecu fitted at some point soon with fresh loom.

In the drivers footwell there is a large yellow junction box with multiple connectors fitted, It would be amazingly brilliant if I can get these wires identified.

I have checked the greenbook and I cannot seem to identify which reference it is, maybe C3 reference?

Any help would be much appreciated chaps!

Cheers

Roger88
20201001_163648_resize_48.jpg

Sorry for picture size by the way!

Laird Scooby · Oct 1st, 2020, 18:35

Quote:

Originally Posted by Roger88

Hi all!

Been quite busy getting on with the Volvo wagon recently!

I'm looking to remove the Ecu wiring from the car as I will be having a Link Ecu fitted at some point soon with fresh loom.

In the drivers footwell there is a large yellow junction box with multiple connectors fitted, It would be amazingly brilliant if I can get these wires identified.

I have checked the greenbook and I cannot seem to identify which reference it is, maybe C3 reference?

Any help would be much appreciated chaps!

Cheers

Roger88

Sorry for picture size by the way!

Which car have you got (inc engine designation), what engine are you fitting, what ECU are you planning on, are you changing the engine and are you planning on converting to sequential injection?

Roger88 · Oct 1st, 2020, 20:51

Hi,

Apologies I forgot to mention its a 1998 Volvo 940 Celebration 2.3 turbo estate with the B230FK engine.

The car still has same engine but now running a 16v head on Penta timing belt and tensioner with lots of other goodies.

It will be on a Link G4+ Ecu with a custom loom.

Pretty much I want to remove the engine harness and ECU loom and have a custom one done for the car.

All I need is a pinout for this yellow junction box connector and it will make my job 10x easier.

Cheers

Roger88

petercz · Oct 1st, 2020, 21:16

That´s a problem, because it´s specific for 96-98 models and I never found wiring diagram for these.
Same connectors are also used in x70 models, but pinouts are different...

Roger88 · Oct 1st, 2020, 22:01

Yeah all I can find is the greenbook for 1995 but I just presumed maybe nothing else was changed after 1995 to 1998 production.

But if anyone does know or could point me in the right direction that would be brilliant.

cheers

Roger88

Laird Scooby · Oct 1st, 2020, 22:11

http://www.myvolvolibrary.info/Tech_...ction-3-39.pdf

In that case, fill your boots! Don't forget the ignition ECU as well...........

*** EDIT *** just spotted the comments above about 96-98 being different to 95 models, first i've known about that but never mind, you'll have to do it the old fashioned way instead. I think you might be better making a small conversion loom so the new ECU plugs into where the fuel and ignition ECUs lived.

For a start, it would be easier to put back to standard if you ever needed to, secondly it's almost certainly easier than trying to figure out those connections that are mixed with countless others.

Volvo_Utrecht · Oct 2nd, 2020, 07:55

Which yellow connector block are you showing there are a few in there.

I have the wiring diagram of the 98 940 in scanned form if you need one

Rversteeg · Oct 2nd, 2020, 10:39

Quote:

Which yellow connector block are you showing there are a few in there.

Must be multi-connector C3 in the 98 wiring diagram. The colours of the other connectors correspond with the diagram as well.

Roger88 · Oct 2nd, 2020, 10:43

Quote:

Originally Posted by Volvo_Utrecht

Which yellow connector block are you showing there are a few in there.

I have the wiring diagram of the 98 940 in scanned form if you need one

It's the yellow connector in the drivers footwell (UK RHD model) which the Ecu and EZK box are wired into,

If you could send me the 1998 wiring diagram that would be brilliant, would make my job a bit easier.

Cheers

Roger88

Roger88 · Oct 3rd, 2020, 20:42

Just thought I should update this thread,

Volvo_Utrecht helped me out with the diagrams I needed so hopefully I will get a chance to start the task of wiring this upcoming week.

Big thanks again Volvo_Utrecht!

Cheers

Roger88

Oct 1st, 2020, 17:53	#1
Roger88 Junior Member Last Online: Jan 20th, 2024 11:44 Join Date: May 2019 Location: Cambridgeshire	Need help with pin out of junction connector Hi all! Been quite busy getting on with the Volvo wagon recently! I'm looking to remove the Ecu wiring from the car as I will be having a Link Ecu fitted at some point soon with fresh loom. In the drivers footwell there is a large yellow junction box with multiple connectors fitted, It would be amazingly brilliant if I can get these wires identified. I have checked the greenbook and I cannot seem to identify which reference it is, maybe C3 reference? Any help would be much appreciated chaps! Cheers Roger88 20201001_163648_resize_48.jpg Sorry for picture size by the way!

Oct 1st, 2020, 21:16	#4
petercz Member Last Online: Apr 16th, 2024 16:58 Join Date: Aug 2011 Location: CZ	That´s a problem, because it´s specific for 96-98 models and I never found wiring diagram for these. Same connectors are also used in x70 models, but pinouts are different... __________________ '96 850 R, B5234T5, AW42-50LE \| '89 764 GLE, D24TIC, ZF 4HP22 '97 944 Turbo, B230FK, M90 (145kW/330NM - Vialle LPi, BTI chips, 16T@0.8bar, 3"DP+2,5"cat-back, wasted-spark, DO88 IC, Bilstein B6, lowered, dual-sways...)

Oct 1st, 2020, 22:11	#6
Laird Scooby Premier Member Last Online: Yesterday 20:02 Join Date: May 2012 Location: Lakenheath	http://www.myvolvolibrary.info/Tech_...ction-3-39.pdf In that case, fill your boots! Don't forget the ignition ECU as well........... * EDIT * just spotted the comments above about 96-98 being different to 95 models, first i've known about that but never mind, you'll have to do it the old fashioned way instead. I think you might be better making a small conversion loom so the new ECU plugs into where the fuel and ignition ECUs lived. For a start, it would be easier to put back to standard if you ever needed to, secondly it's almost certainly easier than trying to figure out those connections that are mixed with countless others. __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ Last edited by Laird Scooby; Oct 1st, 2020 at 22:20.

Oct 1st, 2020, 20:51	#3
Roger88 Junior Member Last Online: Jan 20th, 2024 11:44 Join Date: May 2019 Location: Cambridgeshire	Hi, Apologies I forgot to mention its a 1998 Volvo 940 Celebration 2.3 turbo estate with the B230FK engine. The car still has same engine but now running a 16v head on Penta timing belt and tensioner with lots of other goodies. It will be on a Link G4+ Ecu with a custom loom. Pretty much I want to remove the engine harness and ECU loom and have a custom one done for the car. All I need is a pinout for this yellow junction box connector and it will make my job 10x easier. Cheers Roger88

Oct 1st, 2020, 22:01	#5
Roger88 Junior Member Last Online: Jan 20th, 2024 11:44 Join Date: May 2019 Location: Cambridgeshire	Yeah all I can find is the greenbook for 1995 but I just presumed maybe nothing else was changed after 1995 to 1998 production. But if anyone does know or could point me in the right direction that would be brilliant. cheers Roger88

Oct 2nd, 2020, 07:55	#7
Volvo_Utrecht Volvo Utrecht Last Online: Yesterday 21:56 Join Date: Oct 2009 Location: Utrecht	Which yellow connector block are you showing there are a few in there. I have the wiring diagram of the 98 940 in scanned form if you need one

Oct 3rd, 2020, 20:42	#10
Roger88 Junior Member Last Online: Jan 20th, 2024 11:44 Join Date: May 2019 Location: Cambridgeshire	Just thought I should update this thread, Volvo_Utrecht helped me out with the diagrams I needed so hopefully I will get a chance to start the task of wiring this upcoming week. Big thanks again Volvo_Utrecht! Cheers Roger88

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