How to retrofit ESP/VDC 5.7 on Alfa 147 JTD from 2001 - Alfa Romeo Forum
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(Post Link) post #1 of 12 Old 01-05-11 Thread Starter
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How to retrofit ESP/VDC 5.7 on Alfa 147 JTD from 2001

Finally finished to retrofit ESP/VDC on my Alfa 147 (actually last week but only now had some time to write about it)

Parts necessary :

1. ESP Pump // 35 pounds on
This will replace the old ABS/ASR Pump
The pump was from an Alfa 147 2.0 TS (there are more compatibles)
The code on it :
0 265 225 033
BOSCH 189099 0 265 950 020
Alfa part number : 71714736

2. YAW Sensor // 5.5 Euro from
It's mounted in front of the Airbag Ecu, you have to remove the carpet on the floor, you just have to pull it out it comes precut from factory
It's is from an Alfa 166 (probably the facelift version)
Recommend the later parts because they are the never version.
Cod Bosch : 0265005225 or 0265005277
Cod Alfa : 46557523 or 46831064

3. Steering Angle Sensor // 5 pounds from
This comes with the complete steering stalk. So you have to replace the old steering stalk with this
Alfa part number : 07353655320
supplier 47143 prog 01264
date 17/07/04 fiat 07353655320
0 7353655320

4. Clock spring for Airbag + Steering wheel radio controls // ~ 20 pounds (local dismantler)
Mounted on the steering stalk
There are 2 kinds of clock strings, one for ESP version (black center ring) and one for non ESP version (white center ring)

5. Cable harness // ~ 25 pounds from local dismantler
The best way is to replace the whole cable harness on the car but couldn't find any JTD cable harnesses so took one from 147 2.0 TS.
I took only the cables I needed from the cable harness and made a new cable harness to add to my old one so that I would have all the wires I needed for the ESP to work.

The total was about 170 pounds (in which are the shipping costs) a lot of electric tape , Cola, Coffee and cigarettes
Total time of work was about 3 weekends.

Electric installation


08 - Acceleration/yaw sensor -> D1 (pin 10) //father
09 - Side acceleration sensor test -> D1 (pin 13) //father
10 - Acceleration/yaw sensor reference -> D1 (pin 14) //father
20 - N.C. stop switch -> D97A (pin 08)
21 - Acceleration/yaw sensor earth -> D97C (pin 01)
39 - Side yaw/acceleration sensor power supply -> D97C (pin 05)
41 - Yaw sensor signal -> D1 (pin 11) //father
(This 7 wires you have to get from the engine bay inside the car)

K72 Is the connector for the ESP pressure sensor on the Pump

25 - Brake fluid pressure sensor earth -> K72 (pin 01)
26 - Brake fluid sensor signal -> K72 (pin 02)
42 - Brake fluid pressure sensor positive -> K72 (pin 03)
(This 3 wires go to the pressure sensor K72)

D1 (Is a mother - father connector already on the car, in it also goes the receiver from the immobilizers)

D1 09 //father -> D97C (pin 04)
D1 09 //mother -> K74 (pin 03)
D1 10 //mother -> K74 (pin 05)
D1 11 //mother -> K74 (pin 04)
D1 12 //father -> D97C (pin 02)
D1 12 //mother -> K74 (pin 06)
D1 13 //mother -> K74 (pin 02)
D1 14 //mother -> K74 (pin 01)

D97C Is a shortcoupling brige.
This isn't on the car and you have to take it from the cable harness.
It connects the following pins (1,2 and 3)(4,5 and 6)(7,8 and 9) in short.

D97C 03 -> K58 (pin 06)
D97C 06 -> K58 (pin 05)

K58 Is the steering angel connector

K58 03 -> M1A (pin 33)(Body computer, front blue connector)
K58 01 -> M1A (pin 32)(This 2 wires are for the can communication between the sensor and body computer)

Surprises after installation.

1. Error from the pressure sensor and brake switch (to wires where reversed, wasn't careful when I mounted them, took me 1,5 day to find the reason for this problem )
2. The horn wasn't working , it's power supply it through the clock spring not like the old one through the steering stalk.
Needed to pull a wire from H5A (pin 1, it's the connector from the steering stalk behind the wiper stalk) to D47 (pin 1, it's the clock spring connector) and from H5A (pin 7) to D47 (pin 6)
Here I had some problems because it appears that in eLearn the Horn electric schematic is wrong pin 1 and 6 had to be reversed else the radio controls on the steering wheel light up only when you horn.

For more details you can search in eLearn, it has a lot of schematics.

You also need Fiatecuscan to do a proxy alignment so that the mileage indicator isn't blinking because of the new node in CAN network (steering angle sensor)
And also you have to bleed that brakes. (Don't forget)

Some pictures

Comparison between ABS and ESP pump, the later has the pressure sensor.

Steering stalk without steering angle sensor.

Steering stalk with steering angle sensor.

Location where I pulled the wires Interior

Engine Bay

Wires pulled to the ABS Connector

For the full retrofit you will have to replace the speedo so that you have the ESP icon instead of the ASR (It's not necessary the electronic part behind is the same only the icon differs)
You also have remove two pieces of plastic from the connector of the ESP pump so that the ABS connector can slide in (they have different aligning/sliding pins and this have to be removed so that you can enter the connector in the ESP pump)

If you have more questions ask me.

Last edited by radu_gostian; 01-05-11 at 22:55.
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Thanks for the info, i broke my clock spring yesterday taking off my steering wheel, looked on ebay last night and bought a new one but it was black.

I know what the difference is now.
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From memory there is no ESP(VDC) icon, it's the same light
flashing whether VDC or ASR was active.

(2001 147 2.0TS Distinctive)

Just out of interest what was the spec of the car you've fitted this to?
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Cracking peice of work but I found other makers versions of ESP to make the car feel very twitchy. Does this upgrade make your car feel any different, does it make the ASR seem better, does it include the electronic Q2 option or does it just provide the auto braking of the wheel that is over-accelerating? I could feel this in a straight line on early Peugeot's!
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Factory VDC on the 147 was quite "intrusive" and very easy
to provoke. You definitely knew when you'd peed it off.
And there was no way of turning it off.

Very good on icy mountain passes though.
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I always found turning these aids off to give better progress in really bad weather? Unless you're trying to overtake Yvan Muller on the outside of a snowy road!!! Is this an upgrade worth doing was my real question?
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You could argue that upgrading suspension bits
tyres geometry set-up etc could give you a better
behaving car but could you do it on the OPs budget? Probably not.

There was no off switch on the original VCD and
no eQ2 either.

I quite liked VDC on the 147. It was a good gadget.

Fitted as standard on the 2.0TS and also Distinctive trim level
and above iirc.
(Post Link) post #8 of 12 Old 01-05-11 Thread Starter
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On the cluster with ESP there is no ASR light. They share the same location on the cluster.
With ESP

With ASR. (Without ESP)
Alfa Romeo 147 Tacho Kombiinstrument 735290189 | eBay

The car has no major modification (lowerd ~5 cm and was remaped to ~140bhp).
It's very intrusive when it activates (tends to understeer) but i had to pull really hard left right and back the steering wheel to make it intervine (tested it in a parking lot at night without cars in it had some fun).
I also have a Laguna 2 with ESP and can say that the one from Laguna is more intrusive and comes on very early.
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Sorry guys, but must ask. I recently bought Alfa Romeo 166 Super model (prefacelift version 2002 year), but i realy don`t know is this model equip with ESP or not??? They told me this is the best model of that year, with a lot of equipment.

If someone knows please write me!!
Thanks in advance
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What about brake booster and master brake cylinder? Part numbers are diffrent for esp and non esp cars ( for alfa and fiat also).
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(Post Link) post #11 of 12 Old 21-09-12 Thread Starter
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I don't know why they have different part numbers, I would understand in a different brake booster and master cylinder if we are talking about cars with / without abs, but for esp the brake booster and master cylinder aren't used, the pressure comes from the pump itself, so i don't think that there is any difference between them also they could have different part numbers.
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VDC Retrofit?


I have a 2003 147 JTD 16v M-Jet (140hp) and I'm interested on retrofiting the vdc 5.7 as well on my car.

I allready have a VDC pump taken from a 2009 147 Ducati Corse (with factory Q2) and my car has a Q2 diff fitted as well.

Will I need the exact same parts you've mentioned, since my car is from 2003 (m-jet version)? It only has ASR...

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