Vauxhall Combo Van Reversing Sensors

[Trouble666]

Hi
I've a Combo Van fitted with reversing sensors; However they're not working; Any Ideas??

They usually "Bleep" as soon as the vans put into reverse gear, but not anymore!

Thanks

 

[breezer]

dirty sensor / fuse failed

 

[Trouble666]

dirty sensor / fuse failed

Hi
Although I'm a gasman, I have basic electrical knowledge;
There's a fusebox under the passenger seat, would it probably be one of them? or the 1 in the engine?

Also, would measuring resistance across them using a multimeter therefore suggest blown fuse?

Thanks

 

[Belle427]

is it a factory fitted system? follow the sensor cables and see if there is a control unit somewhere near the back of the car,you may be able to check its getting its 12v feed when you select reverse