Speedo cluster

TonyA said:
The resistor is needed for signal development . Some would call it a pull up resistor . There should be 12 V on the speedo pin 4 as well. Without the resistor the pulses waveform would not appear .
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There is a test that you could perform ,With a helper and a rear wheel stand . If signal is getting to pin 5 of speedo plug when the rear wheel is rotating you should get a averaging DC level when measured with a DVM. As the pulses increase I would expect the level to increase. If you have an O-scope you can read the pulses directly.
 
Barney , Also Make sure the grounded shield is not making contact with the center conductor of the screened speedo cable.
 
Hi

I'm in the same boat as of today speedo was working when left home, got air in tyres, took off no speedo, pulled up turned bike off and on speedo briefly like about 2 or 3 seconds went up to 20 kph then dropped to nothing, did it next time I turned he bike off too.

I swapped the sensors for Bosch about 3000k ago, I still have old one so I will try that and see if it works, failing that do I need to pull the speedo out to get to the 5 pin plug and check pin 5 and 4?

I've had it on the rear wheel stand just checking for loose wires but nothing, speedo didn't move briefly this time either, I'll let the bike cool and change the sensor.

All other details I think are the same as Barney the light in speedo work the km and trip display is visible but doesn't count.

If you're around Barney, what was the end result?

Cheers
 
Hello Bluedog , We have not heard back from Barney with his speedo issue as yet. So my advice is the same . Check the wiring with a ohm meter . Compare it to the drawings , you made need a helper for the other end of the meter . You will be going from speedo sensor all the way up to the speedo plug . Make sure you check the 1 K ohm resistor is connected between those pins at speedo as well.
 
Hi Tony ,

thanks I'll give it a go in the coming week, is the resistor easy to see and change?

Cheers
Bluedog
 
I have not seen it or worked on it. Best guess is it is inside the speedo unit shell in the wire loom. Probably covered with black shrink wrap .Maybe Rob Jameson could tell us . Good luck , I hope it's not a bad unit those are around $300 or more I think .
 
Speedo cluster
Here is the plug, to get at the resistor would you just change the whole plug? There is a cover for it that I removed that has the PIN numbers that were mentioned in an earlier post
 
Lets look back at Rob Jamesons' post. HE said it should be between the white/yellow and red wires on the small plug. Maybe your resistor has come off ? This would be a reason it doesn't work. Take an ohm meter and read between pins white/yellow and red on the plug you should read the resistance. Maybe its inside that black plug body . A small paper clip may help reach inside the pins.

Rob said : Resistor should be between the White/Yellow and Red wires on the small plug, inside the polished stainless clock surround.
 
Speedo cluster
Thanks Tony I have to admit I’m an absolute armature at this and if there was a dealer closer than 900km I wouldn’t have even attempted it. In saying that it was very easy to pull the unit out it’s just the testing I’d like confirmation on. From my u tube tutorial I think I have it right so the reading I’m getting here is 1k ohms? So if that is correct then resistor is ok? Next stop speedo?
 
Yes , . Have you checked continuity of wires from the speedo sensor plug all the way to this speedo plug ?
 
Richard wants to get beneath the clear plastic window which requires the top chrome ring (bezel) to be removed ?
 
TonyA said:
Richard wants to get beneath the clear plastic window which requires the top chrome ring (bezel) to be removed ?
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Tony
Look at post #31
Bluedog “appears” to have removed the LH bezel?
Am I missing something?
John

Edit: Read start of post - my bad!
Got it now!
 
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Speedo cluster
Speedo cluster
Ok thanks I’ve just tested middle plug on the sensor plug to point five on the speedo plug I posted another photo the other further up wasn’t that clear of the speedo plug it actually has a little cover with the numbers on it so we can’t get mixed up anyhow loud signal so the red is all good
 
Now that you got this far , make sure that when you turn the key to ON that you get 12v to the WY wire (white/yellow) on the speedometer end . This should also appear on the red wire (through the 1K ohm resistor). Keep the speed sensor disconnected and the red wire should get the 12v also all the way back at the speed sensor end . At this time make sure that the WY wire (pin 3) on the speed sensor plug also gets 12v when the key is turned on. Last check that the pin 1 black wire(speed sensor end) has continuity with pin 2 Black wire (speedometer plug) and other grounds like the engine ,frame and negative side of the battery. Have key off when you check this ! You have already swapped the speed sensor with cam sensor and they both work on the cam sensor end. Other than trying a brand new Speedo sensor , it's rare to have a speedometer go bad . I don't know what else it could be .
 
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