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Author Topic: Parking Sensor Constant Tone  (Read 466 times)

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tunnie

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Parking Sensor Constant Tone
« on: 22 April 2019, 19:13:44 »

Getting constant tone on rear sensors, had been a bit temperamental for a while. Usually a nice light 'tap/smack' on each sensor fixed the problem, done a bit of diagnosis this time.

I can hear the clicking on each sensor, so I think it's an obstruction. Best to remove each sensor from the housing, clean the tube and re-fit?  :-\
« Last Edit: 22 April 2019, 19:15:53 by tunnie »
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Andy B

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Re: Parking Sensor Constant Tone
« Reply #1 on: 22 April 2019, 19:37:10 »

isn't there a diagnostic mode?  :-\
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tunnie

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Re: Parking Sensor Constant Tone
« Reply #2 on: 22 April 2019, 20:02:11 »

isn't there a diagnostic mode?  :-\

Maybe  :-\

I read before trick was either feel for tap or listen for the click, someones it's clear which sensor is not working. But they all are, as far as I can tell.

So junk/bumper dirt stopping on working correctly.  :-\
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Andy B

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Re: Parking Sensor Constant Tone
« Reply #3 on: 22 April 2019, 20:42:36 »

isn't there a diagnostic mode?  :-\

Maybe  :-\

I read before trick was either feel for tap or listen for the click, someones it's clear which sensor is not working. But they all are, as far as I can tell.

So junk/bumper dirt stopping on working correctly.  :-\

Entwood was No 1 for this ... something to do with a jumper in the box of electrickery in the boot seems to ring a bell  :-\
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tunnie

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Re: Parking Sensor Constant Tone
« Reply #4 on: 22 April 2019, 20:48:09 »

Hummm, be good to know more.  :)
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Re: Parking Sensor Constant Tone
« Reply #5 on: 22 April 2019, 20:51:09 »

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tunnie

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Re: Parking Sensor Constant Tone
« Reply #6 on: 22 April 2019, 20:55:36 »

Thanks for that, a scan, suggests if I pull:

Quote
Entwood: What I did find was a purple blade fuse.. that isn't a fuse .. its a 430 Ohm resistor .. If I remove THAT and try the system .. the tones are different. I don't get the light "self test" tone at all .. I then get

That purple blade fuse, pops it into a test mode.

Where is said fuse though?  :-\
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Doctor Gollum

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Re: Parking Sensor Constant Tone
« Reply #7 on: 22 April 2019, 21:00:20 »

In the loom next to the ecu... Up behind the spare :y
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tunnie

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Re: Parking Sensor Constant Tone
« Reply #8 on: 22 April 2019, 21:17:03 »

Cheers. A job for later in the week.  :y
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TheBoy

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Re: Parking Sensor Constant Tone
« Reply #9 on: 23 April 2019, 08:56:48 »

In the loom next to the ecu... Up behind the spare :y
Nearer the light cluster that side, if my memory serves me right.
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Re: Parking Sensor Constant Tone
« Reply #10 on: 23 April 2019, 13:19:45 »

In the loom next to the ecu... Up behind the spare :y
Nearer the light cluster that side, if my memory serves me right.
It's screwed to the inner wing panel towards the top of the wheel arch :y
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Re: Parking Sensor Constant Tone
« Reply #11 on: 23 April 2019, 17:33:37 »

In the loom next to the ecu... Up behind the spare :y
Nearer the light cluster that side, if my memory serves me right.
It's screwed to the inner wing panel towards the top of the wheel arch :y
The Park Pilot ECU itself is, but I seem to recall the "fuse"/link is nearer the rear light cluster
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VXL V6

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Re: Parking Sensor Constant Tone
« Reply #12 on: 29 April 2019, 15:07:59 »

In the loom next to the ecu... Up behind the spare :y
Nearer the light cluster that side, if my memory serves me right.
It's screwed to the inner wing panel towards the top of the wheel arch :y
The Park Pilot ECU itself is, but I seem to recall the "fuse"/link is nearer the rear light cluster
Aye, up by the N/S/R light cluster where the loom runs for the towbar electrics
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tunnie

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Re: Parking Sensor Constant Tone
« Reply #13 on: 29 April 2019, 18:18:54 »

I really must look at this  ;D
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Re: Parking Sensor Constant Tone
« Reply #14 on: 30 April 2019, 08:37:53 »

Problem solved, fixed itself, for now at least. Got into car today, sensors working normally again.
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