Electrican help please? Citroen C4GP ABS wiring mare (fixed)

[myglaren]

It will sit in the outbox until Marc reads it, then will move to the Sent box.

[Paul-R]

If a PM is in the Outbox it simply means that it hasn't been read by the recipient yet. Marc probably has other things to do today and hasn't had time to look in here yet.

[GiveMeABreak]

Hi Ian - on the Forum system, private messages sit in the outbox until the recipient has actually read them - it works slightly differently on the Forum that an email program. Anyway, here is the complete ESP system wiring Diagram for you. I have included the wiring descriptions for the main plugs below. I can't help with the colours of the wires, because in this case most of them are coded 'ND' non-defined - so could be anything. So focus on the pins.

If you need any more wiring codes for the others coming out of the ESP ECU, then just list them and I'll get back to you.

@ Steve / Paul - Yes - a new house kitten we have 'inherited and it got stuck behind a large unit - so guess what I have been doing since 03:30AM.....

Code	Description
Hardware	N/A
7825	Rear RH ESP Sensor
7820	Rear LH ESP Sensor
7815	Front RH ESP Sensor
7810	Front LH ESP Sensor
1611	Clutch Release Pedal Angle Position Sensor
7800	Esp Ecu
4410	Brake Fluid Level Switch
7804	ESP Accelerometer Gyroscope
7095	Electric Handbrake Assembly /
2120	Brake Twin Function Switch /
Wires	N/A
7032U	Right-Hand Rear Wheel Speed Signal Reference
7031U	Right-Hand Rear Wheel Speed Signal
7022U	Left-Hand Rear Wheel Speed Signal Reference
7021U	Left-Hand Rear Wheel Speed Signal
7012U	Right-Hand Front Wheel Speed Signal Reference
7011U	Right-Hand Front Wheel Speed Signal
7002U	Left-Hand Front Wheel Speed Signal Reference
7001U	Left-Hand Front Wheel Speed Signal

[Nemesis84]

Hi Marc / All - I needed to crack on and see what I could find continuity bit by bit...

So! Update: I managed to trace the continuity fault to the actual connector to the abs ecu - once I'd finally worked out it was possible to take the grey plastic mount off the bulk wire connector (/break in) and see the individual wire termination I found there was a break in the cable (completely corroded and green!) about 5cm from its final termination (so hidden in the connector head)! Patched a new wire to bridge the corroded gap and it's sorted it

If anyone was interested the yellow of the pair terminated one row up and slightly to the left from the arrowed pin on my previous image. which \following Marcs diagram, and spotting there was a tiny tiny number printed on the physical head the wiring diagram indeed matches up to the pin positon

Thanks for your help Marc - much appreciated!

[GiveMeABreak]

No worries, another result, excellent work - it just goes to show how hidden some of these breakages can be.

[pauljordanie]

Im trying to find a pin out diagram of the ABS ECU socket. Which is pin 1, pin 2 etc... Can anyone help please?

[pauljordanie]

I'm trying to locate a pin out diagram for a 2009 C4GP ECU plug. Which is pin 1, pin 2, etc....

[GiveMeABreak]

In both cases I'll need a VIN to help you as diagrams are dependent upon options and specs.

[GiveMeABreak]

I'm trying to locate a pin out diagram for a 2009 C4GP ECU plug. Which is pin 1, pin 2, etc....

You'll need to put the VIN HERE. The system software masks the VIN from public view so it's fine to put it here - only staff can see it, but I cannot see it in a Private Message.

[pauljordanie]

Ok VIN is VF7**************[VIN obfuscated, can be read by forum staff]. I'm also looking for the ABS plug pin numbering as well. Thanks.

[GiveMeABreak]

Ok, here's the ESP / ABS ECU Diagram.

If you need some codes / wires identified let me know.

[pauljordanie]

Thats great !! Thanks. Do you have the pin numbers for the plug that goes on the ABS ECU. Which is pin 1, pin 2 etc on the socket? I have the socket off the back of the unit. I look at the plug that I pulled off but I dont know which is which pin.

[GiveMeABreak]

The 32 Pin black socket shown at the top of the ESP ECU 7800:

Code	Pin	Description
1941	10	Alternator Starter ECU Sensor Earth
1912	12	Clutch Pedal Status Info
1915	9	+5 Volts Alternator-Starter Management ECU Sensor
9010Z	27	High Intersystem 2 Can Bus
9011Z	15	Low Intersystem 2 Can Bus
442U	8	Brake Fluid Level Info
BF03U	1	To Maxi Fuse 2 (Engine Fuse Box)
BF04U	25	To Maxi Fuse 1 (Engine Fuse Box)
ME10A	38	Electronic Earth
7842U	35	Remote Control Wake-Up Information
7112A	32	Angle Sensor + 12 V Power Supply
9000U	26	High Intersystem / Can Bus
9001U	14	Low Intersystem / Can Bus
210U	30	Stoplamps Control
MC10R	13	Earth

[pauljordanie]

Ok, but which pin is pin 1 on the plug? In the picture do I have my probe in pin 3 for example?

[GiveMeABreak]

The numbers should be on the plug - but I can't see much from that picture - it's too dark and not very clear.