Manitou 741 no gauges

[topcat2006]

Can anyone shed any light on this one? No fuel guage, no tachometer, no temperature and the load sensor has a red warning triangle.

We have checked the battery and the alternator, all earth points and all fuses and all are good. Visually there are no loose or damaged wires?

Can anyone help?

Thanks. Tom

 

[ACEngineering]

Can anyone shed any light on this one? No fuel guage, no tachometer, no temperature and the load sensor has a red warning triangle.

We have checked the battery and the alternator, all earth points and all fuses and all are good. Visually there are no loose or damaged wires?

Can anyone help?

Thanks. Tom

i think there is a fuse for the gauges in main fuse board????

may also be the alternator not charging but someone took the warning buzzer out of the PCB board which i think would possibly stop all the warning lights coming on like normally happens when it stops charging?

I would assume all the gauges share a common earth so as a quick test take one of the common earths from the gauges and put a temporary one to it to see if that's the issue.

 

[topcat2006]

Thanks, but the fuses are fine, the alternator is fine and the earth's are all good ( checked with multimeter)....

 

[s~~t shoveller]

Different issue and machine, but just put a new board in a 932 2003 because it was having electrical issues unresolved and the solders on the board were playing up.someone has been in it before and I wonder if they crack the joints if your pulling fuses in and out.the rhs of steering wheel down by the floor .all the fuses and relays are in it .got a new one and various looms attached and no more problems...now always got forward and reverse and and indicators ,not just sometimes.

 

[ACEngineering]

Thanks, but the fuses are fine, the alternator is fine and the earth's are all good ( checked with multimeter)....

I had someone last week waste a day and a half looking for a fault with transmission turned out the fuse they said was okay was blown

 

[topcat2006]

All the fuses were checked with a DVM. All good.

 

[Maff123]

We had a thin wire attached to the battery terminal on the bolt which was factory fit that turned out to be broken which fixed our upper dash issue. I hope this helps it took some finding ours is a 2015 with battery under the boom.

 

[topcat2006]

Funnily enough I found that wire too and it had snapped off. I've re-crimped it and cleaned all the terminals and it's made no difference....

 

[Maff123]

I wonder if you should check that wire further down, it’s what brought our gauges back to life. Good luck!

 

[topcat2006]

So been through and checked again.

Ignition switch working correctly.
earth's all good (checked with DVM).
Fuses all good (checked with DVM).

Nothing supplying the gauges for light but small (2Vdc) reading on signal wire for temp sensor.
Nothing on the digital display.
All other warning lamps working - as per photo.

Has anyone got a wiring diagram for this?

 

[eomachinery]

Did you sort this in the end mate we have one doing exactly the same. Thanks!