Reverse sensor not working.

I've just got an 06 freelander td4 and am unable to get the reverse sensor to function.
The light on the switch is on and flashes,I believe this indicates a fault?
Each of the sensors can be heard ticking, I've found the speaker and ecu and all appears to be connected.
Are there any tests I can do to work out if it's simply the speaker or the ecu?
Can anyone help?
Thanks
Alex

Yip sure can, look out the bloody rear window

Oh I'd never thought of that...... That's what I love about forums,the quick helpful responses
To be honest I'm not overly worried but I just like things to work if they are supposed too.
Alex

Very welcome chap.

You can check the power and grounds to the sensors and the signal back to the ecu using a multimeter

Relatively simple system but I suspect one of the sensors is faulty or there's a wiring issue

Watching... mine goes beeeeep bip when you select reverse and then stays quiet. Until you hit something, presumably! Am guessing it would then make a laughing sound. The rear speakers dont work either never occurred to me there could be a link

td4van said:

You can check the power and grounds to the sensors and the signal back to the ecu using a multimeter

Relatively simple system but I suspect one of the sensors is faulty or there's a wiring issue

Click to expand...

I was under the impression that if the sensors made a noise they were working?
Are you able to explain how I check the signal to the ecu with a multi meter? Electrics are not my strong point.......

The voltage will alter depending on the proximity of an object to the sensor

So using the multimeter on volts carefully probe the signal wire into the ecu from the sensors in turn and ask someone to move their hand closer to each sensor in turn and check for one which is different to the rest whilst carrying out this exercise.

Hope that helps!

That's great thank you for taking the time to reply
Alex