ABY Wiring Harness Help/Identification

[Ruffiano]

those are identified in the document made by Paul

Those go to the "secondary" engine harness and have connections for the MFTS, oil pressure, after run pump, ect..

[marson]

-

[Mr.Crossfire]

Many thanks for this guide! Just got my 90q started & running for the first time with AAN engine. I made a good use of this manual, I guess I would not be this far without it.

[hermanio]

thanks for you help, the wire colors are Red-black and Red-green

[S2central.net]

might be immo related... or to do with unique trailer recognition wiring on the RS2... are you looking at S2 or RS2 diagrams ?

Please confirm wire colours on the plug - I cannot really make them out from here.

[hermanio]

i cant find the wires in the schematics

[hermanio]

can anyone tell me where to connect this connector on a lhd rs2 loom ?

[S2central.net]

If you have worked that much out then you are grand... It is part of RHD antitheft loom - the lhd cars actually have an additional relay. I can tell you more privately if you wish.

[Jaap]

S2 Avant ABY UK relay

Hi All,

Do have a ABY loom here from a UK S2 Avant 1994.
Did foud a red relay holder in the part of the loom what is near the fusebox.
It's activated by a red 2 pins conector and could be schwitche to earth than the relay activates.
Does any one have a idea what this relay is ??
And perhaps a wirringplan were the relay is displayed.

Greetz from Holland
Jaap

[S2central.net]

I had a non-immo ABY loom on the bench here at the weekend and that helped confirm a couple of things...

Here is a quick way to spot which type you have --->

If the number of OBD eyelets is one then its an IMMO loom.

If the number of OBD eyelets is two then it is NOT an IMMO loom... If it has a purple/violet 2-pin connector on this loom type then it also has the factory anti-theft relay(s) - one for RHD, two for LHD. I've helped a few people get through no-start issues because of this.

[s4kido]

paul..
i need help... I have these plugs not connected from a RS2 harness.:

[Ruffiano]

Thanks again Paul, I wired everything this weekend, However I haven't had the time to get it warmed up to temperature to test everything out... for the T5H plug I used these wires, I'm fairly confident they go to the correct places:




You mentioned that my Radiator fan relay (relay 3) could be the wrong relay... What is the correct relay? I should have a spare on my donor car. However the one that was previously hooked up did have the k4 pin even though there was no wire for it in the plug that hooks up to the K position, I added this wire, so I have my fingers crossed, and I'm hoping that this also solves the problem of my Radiator fan not engaging automatically (till now I have had the temp sensor jumpered and running with the fan ALWAYS on).

[S2central.net]

T5h/4 needs to link F76 'R' pin into the aircon clutch controller via the blue/white wire at pin 4 in aux position 4 for manual aircon systems. Easy to see that on page 46 of the ABY wiring guide.

On the funky US digital system that signal actually goes via T1h (white, right side of engine room) into pin 20 of the head unit.

These aux relay 4 units are different between the manual system and digital aircon so be careful and check how you are wired up... Can post more on that from Bentleys if you wish.

[S2central.net]

T5h/2 is just a via from afterrun pump controller J155 to the ECU at pin 41 - see page 46 and just buzz that connection out to check it.

[S2central.net]

Now onto T5h... with respect to page 46 of http://www.s2central.net/S2_Schematics/ABY_Wiring.pdf - in the knowledge you have converted to manual (3-knob aircon)

T5h/1 needs to connect to the black/grey wire (87a) at the aircon clutch relay in auxiliary position 4. This is done via T3d/1 (red plug in engine room - right side) - see track 14 on 87-10-20

On a funky old digital climate system from US there is T3d/2 which maps to pin 23 on the head unit but I think you can ignore that. Such systems also use the clutch relay at aux position 4 and terminal 87a is preserved for connection to ECU so this all lines up.