NO Power to Audio and Sat Nav

[dwillcox]

After many hours of checking rechecking, scratching my head etc etc
I have found this thread which has been very helpful : Relays.

Firstly...I'm a man of very little electrical knowledge but do have some common sense.

Coconut...you stated that the rear Bank of 2 relays  were for

1. ( Forward ) = Starter
2. ( Rear ) = Accessories

Could you let me know which accessories this relay switches...or does it run the audio, and the sat Nav? 

And to check if it's the relay that's not working are the two interchangable?

Both my sat Nav and audio have no power, I have check fuses, and followed hints on removing the audio fuse and replacing it to reset the audio module. All fuses are intact and work fine.

Thank you

[Coconut]

The “Accessories” are the Power sockets,
and nothing to do with the Audio System.

I will try and provide a more detailed reply
when I get back from work tomorrow evening.

Cheers,

[earthman]

Originally Posted by gtgt2112

There are only two different types of relay. I bought them from world of triumph and found that there is just enough room to locate the spare relays upside down on top of an existing relay using a bit of thin plastic tubing to stop it falling off.

I carry one spare on the bike too, must look into getting a spare of the other type.

[Coconut]

Can you advise :

Have you checked for any "DTC's" ( Diagnostic Trouble Codes ) ?
( Servicing Data, Reference Info. & DTC ( Fault ) Codes ) - Scroll down to Reply #8 

Have you done any work on the Bike since the Audio system last worked ?

Has anything else stopped working ?

Do you have a Test Meter for checking whether Voltage is present,
and for checking the continuity of wiring ?

[dwillcox]

Thank you for your time

I was cleaning under the seats...when the stereo stopped working.

The only work I have done is to try to resolve the issue, checking fuses, disconnect the battery and reconnect etc.  Yesterday I went out and the sat nag died, looking further it wasn't being charged.  It uses the lead provided by triumph off the main loom.  The inline fuse in the sat nag is fine. (I have since rewired it temp to the 12v output in the front pocket. )

I have no meter to test anything as I don't know how to use them.  I'm happy to go purchase if it would help.

My current thinking is to take it to the dealer and on the diagnosis machine at the next service.  The rest of the bike is all working fine.

When I purchased the bike 5yrs ago (7k) the audio didn't work, triumph changed it under warranty.  She now has 95k on the clock, not sure triumph will do the same. Triumph and the local dealership have been very good to me in the past.

[Coconut]

OK,

You can check for any Fault Codes yourself quite easily without needing to visit ( or pay ! ) a Dealer,
just follow the Link in my previous reply.

It would be difficult for anyone to diagnose remotely if you cant test for voltage at various places.

You could check one thing though - remove the under seat stowage box,
secured by 4 Torx type screws then it just lifts out, and you'll see the Audio Unit under there.

Check the Multi Plug is firmly pushed in to the socket of the Audio Unit - If it had not latched into place
properly when installed, it is possible that simply cleaning under the seat has disturbed the wiring
which enters the Audio Unit housing from the left side, sufficiently to break the connections.

More information later this evening 

[dwillcox]

Thank you again - You certainly are a knowledgeable chap.

I have now checked the multi plug on the audio unit - no concerns

I have also completed the DTC - ( a very useful piece of information) I have the error code P1690 - CAN Fault, I guess this is a wiring issue?

[Coconut]

DTC P1690 is "CAN Fault", meaning there is ( or has been ) a fault with the communication
between the Main ECM and other CAN Nodes ( Immobiliser Unit, Instruments, ABS Module etc. ).

The Audio Unit also has a connection into the CAN so I am not surprised to see this Code.

Were there any other DTC's stored ? ( Follow the procedure you used before
then press the Scroll UP or DOWN buttons to see if there are any more ).

Getting back to the immediate problem, the wiring Diagram in the Service Manual shows that :

Fuse No.3 ( 10A ) of the Front Fuse Box provides Power to the Audio Unit.
The single Output wire from that Fuse is coloured Red, with a Blue stripe.
The Wiring Diagram shows that at some point the wire has a connector
where it splits into two wires, which then connect to Pins 26 & 27 of the Audio Unit.

I would expect this connector to be a Crimp type connector,
located somewhere within the wiring loom, between the Fusebox and the Audio Unit.

These types of connector are used elsewhere in the Trophy Loom,
and have proved to be troublesome !

It is therefore possible that this connection has broken down, been pulled apart, or is corroded.

If this HAS happened it will explain the problem you describe of no Audio, and no GPS Power.

Do you have any friends  relatives that have a Test Meter ?
( If they have one - they are likely to know how to use it !  ).

Make sure there is a known / tested good fuse in the Fusebox, then unplug the Multi-Plug from the
Audio Unit underneath the under seat storage box.  The wiring plug has a small "catch" on the side
of the moulding that has to be depressed to release it, then the plug can be pulled out, ( but don't
pull directly on the wires - they can be pulled out of the plug and be damaged ! ).

With the Audio Unit disconnected, Switch the Ignition ON ( no need to start the engine ),
and check if there is Power at both Pins 26 & 27 ( Red wires with blue stripes ).

If there is NO power at either or both Pins, this indicates a break in the wire from the Fusebox.
You would then need to start carefully unravelling the black insulating tape of the wiring harness
and tracing the wires back towards the Fusebox to find the connection mentioned above,
also looking for any other signs of damage to the wires.

If there IS power at Pins 26 & 27 then the Audio Unit may well be faulty,
but a further check can be made.

After identifying the relevant Pins, Switch the Ignition OFF,
reconnect the Multi-Plug to the Audio Unit, then switch the Ignition back ON. 

Pin 22 of the Multi-Plug ( Purple Wire ) is the "Clean" Output from the Audio Unit
that supplies Power for the GPS Power connection, in the area underneath the left mirror.
There should be power ( 12V ) at Pin 22.
 
If there IS Power at Pins 26 & 27, but NO Power at Pin 22,
this will almost certainly indicate that the Audio Unit is faulty.

Let us know how you get on ! 

Cheers