Citroen C4 1.6 ABS Wheel speed sensor fault.

[Nisanalmera]

Hello,
I have some struggle with an ABS wheel speed sensor, the old sensor has been replaced plus we have replaced the ABS module (w/brakelines)
The scanner says that there is short or a no ground to the sensor.
My question is how does the ABS wheel speed sensor circiutry look like.
We have tried to clean the plugs going into the BCM and the ECU with no luck aswell.

Best regards and happy new year 😉
 

[Hamburger]

Look for Thomas at AMK autopark. 

[Watwheels]

Just Google for images lo.

Since you have replaced the whole of the ABS system try the brake switch.

http://c4owners.org/plugins/forum/forum_viewtopic.php?104225

http://c4owners.org/plugins/faq/faq.php?0.cat.2.205

If you drive PSA group kinda cars, you have to Google for common faults. Cannot blindly go replace parts and do trial and error.

Edited January 4, 2022 by Watwheels

[kobayashiGT]

8 hours ago, Nisanalmera said:

Hello,
I have some struggle with an ABS wheel speed sensor, the old sensor has been replaced plus we have replaced the ABS module (w/brakelines)
The scanner says that there is short or a no ground to the sensor.
My question is how does the ABS wheel speed sensor circiutry look like.
We have tried to clean the plugs going into the BCM and the ECU with no luck aswell.

Best regards and happy new year 😉
 

You can give OSK automotive at AMK Autopoint a try.

They are good with car diagnostics

https://goo.gl/maps/fn6brgZ8oJj1bKko9

[Watwheels]

Reading diagnostic codes is just part of the mechanics job it also requires them to have experience with cars to know that the fault codes triggered could be from other connected parts. That is why reading fault codes is not as straight forward as most ppl think. A lot of parts in the car are linked.

Edited January 4, 2022 by Watwheels

[Nisanalmera]

Thank you guys for the reply´s.

What i have tested out so far

7810 - 1-26 = 0.0 ohm
7810 - 2-5 = 0.0 ohm
7810 - 1-2 = IO

7800 - 4-GND 0.0 ohm
7800 - 1-GND 0.0 ohm

Still no signal to LH front wheel speed sensor.

Any ideas?

Best regards. (click on picture for better resolution)

 

 

Edited January 4, 2022 by Nisanalmera

[davidjohns]

The Citroen C4 1.6 may encounter an ABS wheel speed sensor fault, triggering the ABS warning light on the dashboard. best wheel alignment near me This fault can result from sensor malfunction, wiring issues, or debris accumulation. Diagnosing and repairing the fault typically involves testing the sensor, inspecting wiring connections, and cleaning or replacing the sensor as necessary to restore ABS functionality and ensure safe driving.