IPB

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
> Furthermore- what is Going on HERE!?, Double take
dante giacosa
post 24th April 2017 08:24
Post #1 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



You know that way; you look at something, then think about it for a while, and realise that what you are looking at is a bit odd??

Well, I had the battery tray out the other night, for the 1st wave of a cleanup down there, and took a few pictures.

The usual stuff- A/C feeds, coolant pipes, wiring looms. Then I realised- looking at the main loom over the gearbox- there appears to be a branch loom, which is folded back on itself, and 'appears' to have a plug in (two-pole?) which is shorted out on itself...

The thing that really stands out about this however; is the use of white tape on the branch loom. Surely this isn't OE?

Can anybody hazard a guess as to what is going on here...?

Attached Image
Go to the top of the page
View Vehicles
+Quote Post
sanitary
post 24th April 2017 21:13
Post #2 | Print


1.4 16v
**

Group: Regular
Posts: 119
Joined: 12th December 2004
Local Time: 24th November 2017 07:24
Member No.: 662
Driving: in front of you
From: Lardtown, 'ulll



maybe a connection for aircon




san
Go to the top of the page
View Vehicles
+Quote Post
dante giacosa
post 24th April 2017 22:41
Post #3 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



But...

I've got aircon.

That functionality is in use.

Oh- hangon; you mean like a connection associated with recharging the system?
Go to the top of the page
View Vehicles
+Quote Post
sanitary
post 25th April 2017 16:48
Post #4 | Print


1.4 16v
**

Group: Regular
Posts: 119
Joined: 12th December 2004
Local Time: 24th November 2017 07:24
Member No.: 662
Driving: in front of you
From: Lardtown, 'ulll



QUOTE(dante giacosa @ 24th April 2017 23:41) *
But...

I've got aircon.

That functionality is in use.

Oh- hangon; you mean like a connection associated with recharging the system?



No, that's an electrical connection so nowt to do with aircon then.... blink.gif



san
Go to the top of the page
View Vehicles
+Quote Post
dante giacosa
post 13th May 2017 15:46
Post #5 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



Starting to look like an unused branch for an external temperature sensor.

Yet to be proven, however...
Go to the top of the page
View Vehicles
+Quote Post
Antonio
post 13th May 2017 20:47
Post #6 | Print


1.3 8v
*

Group: Member
Posts: 56
Joined: 29th November 2015
Local Time: 24th November 2017 10:24
From: Spain
Member No.: 12,458
Driving: 146 Boxer 16v, 146 Ti Fl, 145 Qv Fl
From: Spain



I don't think so, but who knows....my father's 155 has same plug, used for oil level sensor.
Go to the top of the page
View Vehicles
+Quote Post
Ganz
post 13th May 2017 20:50
Post #7 | Print


1.6 8v
***

Group: Regular
Posts: 757
Joined: 2nd November 2012
Local Time: 24th November 2017 07:24
From: East Mids
Member No.: 10,640
Driving: 145 Cloverleaf 2.0L ts
From: uk



It looks like the connector to the headlight water washer unit that sits on the front bumper. I got rid of my HL water net washers and just tie wrapped mine in a similar way. Nothing to worry about.

As the ph2 is different to my 145 I'd check the headlight water jet units to confirm as yours is a ph2 145. Do you have one on the other side of the car I.e the far side?

This post has been edited by Ganz: 13th May 2017 20:55


--------------------
G A N Z 145

Instagram
ganz145_alfa
Go to the top of the page
View Vehicles
+Quote Post
dante giacosa
post 13th May 2017 21:44
Post #8 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



Actually Ganz,

I'm rocking a 146

But it's interesting to read of the potential for an oil level sensor or headlight washer motor.

I don't have the washer jets, as it happens.

There is a plug fitted with a link over cable wired in. I wonder if I pull it out (if the lamp is fitted in the cluster) if I'd get a telltale on the dash...?!
I'm not worried about it- I just like to think I know what these details are for...
Go to the top of the page
View Vehicles
+Quote Post
black 146
post 14th May 2017 16:40
Post #9 | Print


1.7 16v
*****

Group: Veteran
Posts: 3,367
Joined: 2nd January 2009
Local Time: 24th November 2017 07:24
From: norfolk
Member No.: 3,861
Driving: alfa 145 1.6ish
From: norfolk



QUOTE(dante giacosa @ 13th May 2017 22:44) *
Actually Ganz,

I'm rocking a 146

But it's interesting to read of the potential for an oil level sensor or headlight washer motor.

I don't have the washer jets, as it happens.

There is a plug fitted with a link over cable wired in. I wonder if I pull it out (if the lamp is fitted in the cluster) if I'd get a telltale on the dash...?!
I'm not worried about it- I just like to think I know what these details are for...



the headlight washer motor is beside the screen washer motor in the water filler tank


--------------------
Go to the top of the page
View Vehicles
+Quote Post
shpuncik
post 14th May 2017 18:29
Post #10 | Print


1.3 8v
*

Group: Member
Posts: 56
Joined: 16th January 2017
Local Time: 24th November 2017 09:24
Member No.: 12,980
Driving: 145 1.6 Boxer; 145 1.9JTD Edizione Sportiva
From: Lithuania



brake pad wear sensor? disconnect short and check on instrument cluster for warning light.
Go to the top of the page
View Vehicles
+Quote Post
dante giacosa
post 14th May 2017 22:51
Post #11 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



It's not that, Valdas

Brake pad wear sensors are single core, connecting to chassis ground- and I found that blowing around nearby a couple of weeks ago...
Go to the top of the page
View Vehicles
+Quote Post
sanitary
post 15th May 2017 08:27
Post #12 | Print


1.4 16v
**

Group: Regular
Posts: 119
Joined: 12th December 2004
Local Time: 24th November 2017 07:24
Member No.: 662
Driving: in front of you
From: Lardtown, 'ulll



just had another look at the pic

there is a loop connection to the loom

disconnect the loop and see what stops or starts working

I did wonder if it was for the self leveling headlight system but I don't think so



san
Go to the top of the page
View Vehicles
+Quote Post
shpuncik
post 15th May 2017 09:38
Post #13 | Print


1.3 8v
*

Group: Member
Posts: 56
Joined: 16th January 2017
Local Time: 24th November 2017 09:24
Member No.: 12,980
Driving: 145 1.6 Boxer; 145 1.9JTD Edizione Sportiva
From: Lithuania



QUOTE(dante giacosa @ 14th May 2017 23:51) *
It's not that, Valdas

Brake pad wear sensors are single core, connecting to chassis ground- and I found that blowing around nearby a couple of weeks ago...


My bad. Got mixed with other car's wiring. You're right, Alfa uses single wire for brake pads.

You could follow wires, maybe they go through some big connectors like the one next to the battery which connects engine wiring loom to body. This at least will narrow search what's used for. Also knowing wire colors also helps. Quick look into the wiring diagrams doesn't give any clues.
Or as sanitary sugested, I'd try to disconnect and see what happens.

It could be for cooling system as wiring vary depending on engine, year, with or without A/C, auto or no auto climate control, single or dual fan on radiator core.
Go to the top of the page
View Vehicles
+Quote Post
dante giacosa
post 15th May 2017 12:57
Post #14 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



'Single or dual fan'

Wow! There are SO MANY Euro spec mods still to do!


I think I need to establish what the other loom functionality has, and then investigate associated schematics...
Go to the top of the page
View Vehicles
+Quote Post
Ganz
post 20th May 2017 21:03
Post #15 | Print


1.6 8v
***

Group: Regular
Posts: 757
Joined: 2nd November 2012
Local Time: 24th November 2017 07:24
From: East Mids
Member No.: 10,640
Driving: 145 Cloverleaf 2.0L ts
From: uk



QUOTE(dante giacosa @ 24th April 2017 09:24) *
You know that way; you look at something, then think about it for a while, and realise that what you are looking at is a bit odd??

Well, I had the battery tray out the other night, for the 1st wave of a cleanup down there, and took a few pictures.

The usual stuff- A/C feeds, coolant pipes, wiring looms. Then I realised- looking at the main loom over the gearbox- there appears to be a branch loom, which is folded back on itself, and 'appears' to have a plug in (two-pole?) which is shorted out on itself...

The thing that really stands out about this however; is the use of white tape on the branch loom. Surely this isn't OE?

Can anybody hazard a guess as to what is going on here...?

Attached Image


It doesn't look long enough to connect to anything.


--------------------
G A N Z 145

Instagram
ganz145_alfa
Go to the top of the page
View Vehicles
+Quote Post
GialloEvo94
post 20th May 2017 22:37
Post #16 | Print


Forum Administrator
*******

Group: Admin
Posts: 9,490
Joined: 11th June 2005
Local Time: 24th November 2017 07:24
From: South Oxfordshire, UK
Member No.: 954
Driving: Alfa 145 QV, Lancia Delta Integrale Evo, SEAT Leon Mk2 FR+ TDI DSG
From: South Oxfordshire, UK



There are a few answers in this thread which I think are on the right track.

I believe it is where a thermal cut-off contact switch for the air conditioning compressor can be optionally fitted. Such switches were fitted to the diesel engine cars but I'm not aware of one ever being fitted to a petrol version. The loop just makes a permanent connection across that connector where a thermal switch would normally control an open or closed contact.

You can test this by removing the loop and seeing if doing so then prevents the clutch on your aircon compressor from ever engaging. With that loop removed the clutch should never receive an engagement voltage.

Attached Image


--------------------
Go to the top of the page
View Vehicles
+Quote Post
dante giacosa
post 21st May 2017 07:51
Post #17 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



Hullo GE!

Gosh- that's clever- I certainly hadn't got that far in diagnosis.

I thought I had established it, in a couple of schematics as connection S7, but it didn't seem to be the right functionality.

That certainly sounds feasible about the AC compressor. Thankyou

Attached Image


This post has been edited by GialloEvo94: 21st May 2017 18:05
Go to the top of the page
View Vehicles
+Quote Post
Antonio
post 21st May 2017 21:05
Post #18 | Print


1.3 8v
*

Group: Member
Posts: 56
Joined: 29th November 2015
Local Time: 24th November 2017 10:24
From: Spain
Member No.: 12,458
Driving: 146 Boxer 16v, 146 Ti Fl, 145 Qv Fl
From: Spain



QUOTE(GialloEvo94 @ 21st May 2017 00:37) *
There are a few answers in this thread which I think are on the right track.

I believe it is where a thermal cut-off contact switch for the air conditioning compressor can be optionally fitted. Such switches were fitted to the diesel engine cars but I'm not aware of one ever being fitted to a petrol version. The loop just makes a permanent connection across that connector where a thermal switch would normally control an open or closed contact.

You can test this by removing the loop and seeing if doing so then prevents the clutch on your aircon compressor from ever engaging. With that loop removed the clutch should never receive an engagement voltage.

Attached Image

I donīt think so, those switches were fitted only on Denso A/C compressors, and it was connected between 1-way plug from wiring harness and the wire from A/C clutch's coil. That's a pic from Denso compressor from 155 2.0 TS 16v, the thermal switch is marked with the red arrow:

Attached Image



Go to the top of the page
View Vehicles
+Quote Post
dante giacosa
post 23rd May 2017 12:30
Post #19 | Print


1.4 16v
**

Group: Regular
Posts: 290
Joined: 28th March 2017
Local Time: 24th November 2017 07:24
Member No.: 13,068
Driving: 146 CF2 1.8 T-spark
From: Edinburgh



the controversy continues!

well,

I have the car back now- so theres no excuse not to find out...!
Go to the top of the page
View Vehicles
+Quote Post

Reply to this topicStart new topic

 



- Lo-Fi Version Time is now: 24 Nov 2017 07:24