ABS and ESP lights are on?

Tiny
PICOBRANT
  • MEMBER
  • 2017 CITROEN C3
  • 1.2L
  • 3 CYL
  • 2WD
  • MANUAL
  • 28,000 MILES
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.
Thursday, October 20th, 2022 AT 12:02 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
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
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Thursday, October 20th, 2022 AT 8:18 PM
Tiny
PICOBRANT
  • MEMBER
  • 2 POSTS
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.
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Saturday, October 22nd, 2022 AT 11:49 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 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
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Saturday, October 22nd, 2022 AT 9:45 PM

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