ABS and ESP lights are on?

2017 CITROEN C3
28,000 MILES • 1.2L • 3 CYL • 2WD • MANUAL
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PICOBRANT
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I need a wiring diagram to show the connections to the ABS module to check the positive and negative power connections and the integrity of the wheel sensors.
Oct 20, 2022 at 12:02 PM
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JACOBANDNICKOLAS
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Hi,

Because this vehicle isn't offered in the US, I don't have wiring schematics. However, you can check each wheel speed sensor individually.

If you take a look through this link, it explains how to test a wheel speed sensor while it is on the vehicle.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Also, considering how new this vehicle is, you could scan the can-bus or if you have a live data scan tool, watch each wheel speed to see if one is off.

Here is a link that explains how the can-bus is checked:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Let me know if this helps or if you have other questions. Although I don't have the schematics, the circuits all primarily work off the same principles.

Take care,

Joe
Oct 20, 2022 at 8:18 PM
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PICOBRANT
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Thanks for the info much appreciated. I need to check the continuity of the positive and ground connections to the ABS module before deciding whether to get a replacement unit. My code reader cannot communicate with the ABS so possibly a loss of voltage.
Oct 22, 2022 at 11:49 AM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Hi,

It is very possible. If you can't communicate with the module, something is happening.

If you can, let me know what you find or if I can help in any way.

Take care,

Joe
Oct 22, 2022 at 9:45 PM