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Saxo Engine/Performance If you're interested in tuning Saxo engines, or if you need to know something which is engine related... this is the place for you.

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Old 24th May 2014, 15:47   #1
Tom5190
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Default Saxo & 106 Wiring loom information - Splicing & Pin Data

I've done a fair few loom splices for members on here & moaners over the last few years, it seems to have died off a little and I also don't really have the time anymore. I'm still doing it but not as many. Therefore I think its time I shared the info that I have.

I made these diagrams/lists myself, please take that into account. As far as I am aware over the last 3 years I've not had any problems with the working of any looms using this pin data. However I hold no responsibility if something does go wrong. Please note that the information needed is only really 30% of what's required to do the job, if you don't know what your doing in terms of wiring looms and general electronics, then I would urge that you do it with someone who does, or pay somebody else.

(I've not been on here in a while and I have seen a few pm's regarding fan info I'll go over that in here too)

Please see this thread to identify which chassis plug you have: http://www.saxperience.com/forum/sho...d.php?t=441413

IMPORTANT: The pin numbers on the chassis plug (engine side) count from right to left, all of the following info relates to the engine side. When 2 numbers are given i.e. CM103/CC2 this means that EITHER can be found on that wire, the wire does the same job.

The following information covers the chassis plug found on Mk1, Mk2 Saxos & S1, S2 106's:

S1 106:

1. CM10E/CC2 - Ignition Live
2. 1071 - Alternator Warning Light
3. water blue 3
4. 100 starter
5. oil temp
6. reverse grey
7. reverse orange
8. Rev counter
9. 465 - Speedo
10. water blue H
11. oil g/plug white
12. oil g/plug red
13. oil rear sensor
--------------------------
16. - 820 - Immobiliser
17. - 821 - Immobiliser
--------------------------
22. K-light
23. 124/120 - Fuel Pump Live

Early S2 106:

Black Plug:
1. CM10E/CC2 - Ignition Live
2. 1071 - Alternator Warning ight
3. 400 - Coolant Red Light
4. 100 - Starter
5. 410 - Oil Pressure Red Light
6. C075/CH07A - Reverse
7. 220/2210 - Reverse
8. 425/426/429 - Rev Counter
9. 427/428/1316 - Diesel Rev Counter
10. 401 - Coolant Gauge
11. 8225/182/CC3A - Air-conditioning Live
12. 820/821 - Immobiliser
13. 123/125 - Lambda Sensor Live (Note: this needs bridging with an ignition live if fitting engine to a later 3plug model)
14. 465 - Speedo
15. 821/820 - Immobiliser
16. 140 - Diagnostic Wire
17. 141 - Diagnostic Wire
18. 142/480 - Engine Management Warning Light
19. MM100 - Earth
20. 435 - Diesel Coil Light
21. 822 - Immobiliser
22. Blank
23. - 120/124 - Fuel Pump Live

Grey Plug
1. Blank
2. 414 - Oil Level
3. 415 - Oil Level
4. 411 - Oil Temperature

Early Mk1 Saxo:

1. 822 - Immobiliser
2. 140 - Diagnostic Wire
3. 141 - Diagnostic Wire
4. 821 - Immobiliser
5. CC2/CM10E - Ignition Live
6. 100 - Starter
7. C075/CH07A - Reverse
8. 220/2210 - Reverse
9. 425/426/429 - Rev Counter
10. 120/124 - Fuel Pump Live
11. 123/125 - Lambda Sensor Live (Note: this needs bridging with an ignition live if fitting engine to a later 3plug model)
12. 410 - Oil Pressure Red Light
13. 1070/1071 - Alternator Warning Light
14. 415 - Oil Level
15. 401 - Coolant Gauge
16. 414 - Oil Level
17. 400 - Coolant Red Light
18. 411 - Oil Temperature
19. 142/480 - Engine Management Warning Light
20. 820 - Immobiliser
21. Blank
22. Blank
23. 465/1360 - Speedo

Early 3-Plug ECU Chassis Plug (Mk2 saxos & S2 106):

1. CM10E/CC2 - Ignition Live
2. CH07A/C075 - Reverse
3. 100 - Starter
4. 822 - Immobiliser
5. 820 - Immobiliser
6. 2210/220 - Reverse
7. 425/426/429 - Rev Counter
8. 410 - Oil Pressure Red Light
9. 1072/1071 - Alternator Warning Light
10. 414 - Oil Level
11. 415 - Oil Level
12. 821 - Immobiliser
13. 465 - Speedo
14. 140 - Diagnostic Wire
15. 141 - Diagnostic Wire
16. 400 - Coolant Light
17. 401 - Coolant Gauge
18. 480 - Engine Management Warning Light
19. Blank
20. 411 - Oil Temperature
---------
34. 124/120 - Fuel Pump Live
35. 123 - Lambda Sensor Live (Note: this needs bridging with an ignition live if fitting engine to a later 3plug model)

Later 3-plug ECU Chassis plug (MK2 Saxo & S2 106):

1. CM10E/CC2 - Ignition Live
2. CH07A/C075 - Reverse
3. 100 - Starter
4. 410 - Oil Pressure Red Light
5. 465 - Speedo
6. 820 - Immobiliser
7. 822 - Immobiliser
8. 425/426/429 - Rev Counter
9. 140 - Diagnostic Wire
10. 141 - Diagnostic Wire
11. 414 - Oil Level
12. 415 - Oil Level
13. 411 - Oil Temperature
-----------------------------------
27. 400 - Coolant Light
28. 401 - Coolant Gauge
29. 480/142 - Engine Management Light
30. 430 - Air-condition Control
31. 8074 - Air-con Wire
32. 8076 - Air-con Wire
33. 8078 - Air-con Wire
34. 124/120 - Fuel Pump Live
35. 2210/220 - Reverse
36. 1072 - Alternator Warning Light

Tips:

1. You don't need the immobiliser wires, if the ECU has been unlocked properly & the pins removed then they wont be doing anything. Immobilisers will not work on an engine conversion unless all of the necessary hardware is transferred with the engine.

2. Air-con wires are always there, obviously this is useless in the UK as our models never had it. these can also be removed from the loom.

3. The engine only needs 3 wires to run, that's STARTER, IGNITION LIVE & FUEL PUMP. If these wires are spliced correctly & you have no spark/fuel then your ECU is not unlocked correctly and/or you have a faulty Main Relay (Under ECU)

4. I usually leave the oil level & temp wires in the loom tapped up in case they are needed at a later date. However if you don't plan on using 16v clocks then these can be removed too.

5. I usually bridge the Lambda live into the CM10E ignition live wires further down the loom.

6. If you are going to use an early Saxo 16v engine, there's a 90% chance that none of the wire numbers are still there, also with only using 4 different colours you need to be careful, cut 1 wire at a time, buzz it to the plug to identify the pin and then splice it. Don't get carried away and cut the full plug off at the start you will cost yourself a shed loads of time.

7. MM100 earth in the early 106 looms isn't needed in a splice either, this can go.

If you fancy more of a challenge and want an XU10 or something along them lines in the car then the following link has most of the Peugeot wiring diagrams that you will need for anything like that. To my knowledge a Citroen version of this doesn't exist. - http://peugeot.mainspot.net/wiring_diagram.shtml

MORE TO BE ADDED
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Last edited by Tom5190; 17th August 2014 at 15:54.
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Old 24th May 2014, 20:14   #2
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Default Fan Instrustions

Fan wiring instructions:

1. Saxo - Using Mk1 radiator & Mk2 fan setup

First, on the fan open up the black box, there is one Phillips screw holding the cover on as you look at it from the front of the car.

You need to bridge the blue and green wire coming from the relay, once that's done put the relay back into the fan housing and put the cover back on.

Next you need to wire in an earth, there is an earth point just behind the battery tray or behind the headlight that you can use, just get a length of wire and attach a ring terminal onto the end, then solder this into the yellow/green wire coming from the fan plug on the radiator.

Next there should be a blue wire from the fan plug left, There are 3 wires going to the original fan plug on the engine loom these should be green, pink & yellow. You need to connect the remaining blue wire from the plug to the yellow wire on the original loom.

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Old 24th May 2014, 23:41   #3
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nice to see this is finally on here.. needs sticky.. ROSSSS!!!!! hahaha

ive still got that file you sent me donkies ago tom
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Old 26th May 2014, 10:11   #4
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Awesome, been hunting for this info for a long time
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Old 26th May 2014, 16:30   #5
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great info thanks bud
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Old 27th May 2014, 20:51   #6
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Hi All.


I'm new in this site,i have problem with my saxo (mk2 VTS)
I have changed Engine from 1.4 8v to 1.6 16v but wiring plug is not same,maybe anybody can help me? I have not so many time i must start this i weekend....
I think i need some wiring diagram or pin number whith picture as both engine or the car side(1.4 8v) and the engine side(1.6 16v) if that possible...

Thanks
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Old 18th October 2014, 16:50   #7
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Default Ax GTi VTR

Hi there. Great post. I have just fitted my saxo vtr engine into my beloved ax gti. All I need to do now is connect up electrics. Can you confirm that the 3 plug ECU pin out wiring is that what you have posted. Just want to make sure I am looking at the right one.
Cheers
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Old 18th October 2014, 22:59   #8
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The wiring lists there are for 3 plug & single plug ecu's, what engine loom is it that you have from the 16v?
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Old 4th November 2014, 18:41   #9
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Default Vtr 3 plug ECU

Not sure If you got the last message. My engine is the 8v VTR with the 3 plug ECU. I think it's the larger later plug. If I'm looking at the plug. From right to left. Right being no 1. This is blue? Is this the ignition live (CM10E)and all I should need to run apart from fuel and starter solenoid switch side. I am a bit confused because the diagram I have, think it's a Haynes, says the CM10 E is grey??
Hope you can help. Really desperate to get running now and nearly there.
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Old 15th December 2014, 11:57   #10
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Has anyone taken 1.6 16v from Berlingo/Partner ca 2000-ish?

Do the have the imobilizer?
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Old 22nd July 2015, 11:01   #11
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Default wiring loom

I have got a saxo vts loom that ive identfied as the early mk 1 saxo plug. I am trying to adapt it to fit the early s2 106 plug but when ibhave checked the continuity from various components to your allocated pin positions they have come up different on both looms. Is there any way you can help me. Thanks, Chris
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Old 22nd July 2015, 14:51   #12
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Hi mate! Is they're any chance you'd consider doing another wiring splice, from a 2000 VTR being fittied with a 1.6 16v the plug is smaller on the engine loom than the loom on the car if you could let me know that would be brilliant thanks mate
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Old 13th February 2016, 11:31   #13
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used guide and is perfect, i dont get the lambda wiring situation though, iv gone 3 plug to single plug, had a loom already spliced for the newer s2 plug type by pug 1off but mines w reg cross over (simple splice to older pin lay out by myself) and my cars plug iv used hasnt got the lambda live wire in 35 can i splimy chop it out of the other side and hook it up to 12v from there, or would it need sending to the lambda sensor
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Old 13th February 2016, 11:33   #14
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car runs fine but begins spluttering and begining to think its this missing 12v for lambda, cos i can unplug lambda and no eml so somethings not right
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Old 21st April 2016, 16:20   #15
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Hi everyone! I am new to the forum, and I don't know if I write to a good place or not. I want to ask for your help. I have a saxo 1.6 VTS (2001) and it had ignition problems. The engine was runing but was very irregular. The engine wanted to stop all the time and black smoke and gas smell came out of the exhaust. I knew it is some problem with the ignition. Under the hood I saw a wire coming out of the ignition transformer and that was melted by the heat of the engine. I put on some insulating tape on the small wires, and the problem was solved. But I dont want to leave it that way. It would be good to get a new wire, but I dont know how to ask for it at the local car part shop, because I dont know the name of that wire. I dont know if I can buy that single piece of wire or I have to buy the complete wiring loom. And I also want to know the cause of the melting. Why? It is not normal that the engine melts the wires around it. How can I prevent it? I attached a picture of the engine and the wire in red circle.
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Old 21st April 2016, 17:46   #16
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Hard to see but that looks like a ht lead!!!!!!
Have you taken the engine cover off and looked inside to find where the wire goes to?
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Old 21st April 2016, 19:51   #17
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Yes, under the engine cover there is the ignition transformer, and this wire is connected to it.
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Old 21st April 2016, 20:18   #18
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Tidy, that's why your car is running like poo!
You can't get the leads singular unless you go to a scrap yard and find a twin cam Peugeot/Citroen.
Best bet is to get on eBay and get yourself a set of ignition leads/ht leads or go to a local motorfactor. They're about £20 not sure what Euro is to pounds off the top of my head so I won't guess
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Old 21st April 2016, 20:25   #19
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Just to add. It's melting because it's touching the engine. You could get a bit of coolant hose or something a little smaller, slice it, put that over leads and then wrap it in insulation tape, that should stop the leads melting on the block.
If you replace ht leads, do them one by one so not to mix up ignition sequence.
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Old 21st April 2016, 20:26   #20
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Oh and the smell of petrol is the unburnt fuel that's not igniting because there's no spark to the cylinder.
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