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[Shackeng]

Can anyone tell me which is the live lead for the Parkpilot speaker, i have buzzer to  wire in to check the speaker but it is 'handed' voltage wise. The speaker - I believe - is the 2 wire output from the ECU and has red and brown wires. I don't think it will blow anything up if I wire it wrongly, but better safe than sorry.

TIA

[Shackeng]

OK I've worked out which are the +ve and -ve leads, Red is the +ve as expected. Putting 12v across the leads gives no sound from the speaker, however, putting a 12v buzzer across the leads, it does not work either when the sensors are activated in reverse with ign on, assuming that putting something behind a sensor activates it.
Failure of both these tests suggests that both the speaker and the ECU are faulty, which seems unlikely. 

Any ideas guys?

[05omegav6]

Are you connecting the buzzer to the terminals on the ecu, if only to rule out the plug itself

[TheBoy]

Never really studied the circuit diagram for it. However, the speakers seem fragile

[Shackeng]

Are you connecting the buzzer to the terminals on the ecu, if only to rule out the plug itself

No Al,  I've only connected to the wires out of the plug, mainly 'cos I can't see how to disconnect the plug easily, although I'm sure there is a simple locking catch.

[05omegav6]

Push the tab on the speaker plug down where it meets the socket locking tab is on the speaker side of the plug..

Speaker plug is on a 6" fly lead from main control plug, but guessing you already know that

Pins 1 BR and 2 RT of the main control box plug/socket are the speaker connections

[Shackeng]

Push the tab on the speaker plug down where it meets the socket locking tab is on the speaker side of the plug..

Speaker plug is on a 6" fly lead from main control plug, but guessing you already know that :-\

Pins 1 BR and 2 RT of the main control box plug/socket are the speaker connections

Ooops

[05omegav6]

If you can confirm a current at the control box, then that would confine the issue to either the loom to the speaker, the connections along said loom or the speaker itself

[Shackeng]

If you can confirm a current at the control box, then that would confine the issue to either the loom to the speaker, the connections along said loom or the speaker itself

Right, and I need to remove those plugs from the control box to check for power there.

Sorry for delay, been watching Westwood lose the Open.

[Shackeng]

I've now got the plugs out of the control box. Incidentally my (2 wire?) speaker feed is continuous from the box and I have power, 11v , to the box.

[05omegav6]

Mine, sitting next to me, came from a 2002 saloon, using that for reference

And yes speaker is only two wires

[Shackeng]

Hmmm, I'm baffled, as there is voltage into the box, but the speaker does not squawk with 12v applied to it directly, and a separate buzzer does not work when supplied via the box when - I think - the sensors should be operating. Is there likely to be any  audible indication, other than the speaker, when the sensors operate as I have no way of knowing? In any case it looks like a dual fault, failed speaker, plus WHY, even if unlikely.

[05omegav6]

Do the reverse lights work can you feel a faint vibration from the sensors when ignition at position 2 and reverse engaged (don't forget to plug everything back in first)

[Shackeng]

Do the reverse lights work can you feel a faint vibration from the sensors when ignition at position 2 and reverse engaged (don't forget to plug everything back in first)

I'll check after dinner.

Thanks for all your replies Al.

 

[Shackeng]

Do the reverse lights work can you feel a faint vibration from the sensors when ignition at position 2 and reverse engaged (don't forget to plug everything back in first)

I didn't feel this when I had ign on and in reverse.