C4 (2005) - ABS light.

[gordone]

Thank you, see picture below:

[gordone]

Thank you

Is these correct?

[RichardW]

Does it have stability control?

[gordone]

I’m not sure, but I think it’s ESP button in the car, will check If the button is there.

Is it other ways to check also?

[wheeler]

The simplest way is to check for the presence of the deactivation switch located on the switch panel above where your right knee would be (on RHD models).
Alternatively the last 8 digits of the VIN can give the info.

[gordone]

I have checked, no ESP button found.

[wheeler]

This one should be about right.

[RichardW]

Same one I found.. should be 12V on pin 18 ignition switched, fed from F7 on the underbonnet fuse box. Pins 2 and 3 should be permanent live, fed from Maxi Fuse 2 and 3 respectively - these should be beefy wires, as they are presumably the power feeds for the pump; I suspect it has backed up feeds for security. Pins 1 and 4 should be earth, 1 is probably the beefy one for the pump. Seems unlikely that both of these feeds have gone AWOL, backs up my thoughts that the pump is knackered, unless the earth on 1 is failed.

[gordone]

Thank you both

I will take out the plug on the ABS pump and measusre these, so little space, but will try to manage without removing somehting.

When it comes to counting the pins, are there a number on each pins or in one corner or someting?
How to to know here to count from?

Thank you

[RichardW]

There should be small numbers embossed on the plug, but they're difficult to see - the wires should be numbered every few cm, with the same numbers as on the wiring diagram, again difficult to see!

[gordone]

Today have I looked further into these, the pin number was quite easy to read.

Pin 18 was 12-13v against ground when the switch was on.
Pin 2 and 3 towards grond was dead....
Pin 1 and 4 against ground was 0hm....

These is maybe good news, its not nessarry that the pump is dead ?

What is the best step further now?

Thank you for your advise.

[RichardW]

You need to check the maxi fuses - these are under the under bonnet fuse box, you need to get the fuse box out to get at them. If these are blown, then check for continuity to earth down the wires - if you have a short then rewiring should fix it. If the wires are OK, then you are back to the pump.

Getting to the maxi fuses on a 307, yours will be similar, you can see the maxi fuses at about 5 mins in:

[gordone]

I have now checked the fuses they was good.

Rewiring from fuse to connector then?

How do I know witch of the fuse is MF2 and MF3?

[RichardW]

Don't know how the maxis are numbered. Looks like the wires come off an 8 pin black socket on the fuse box, you might be able to see the wires with the numbers on. Worth a check that you've got power up to the fuses.

[gordone]

I understand, will do some investigation to figure out witch fuse the cabels goes to.

And then check for power to the fuse before I make new cabels.

I feel we are on the right track know... since the fuse was okay... is it properly not the pump who has generated the power loose...
so if the pump is not working after I fixing 12v, then must there be two independence here?

I planning to contine start of next week.

Will keep you posted.

Again, thank you !