I can't switch over to the sub fuel tank

If the light dont come on...there is either no power to switch or a blown globe. If u said it worked but no light, id say globe, but because nothing works, id say power...fuse would be a good start....also check wiring to valves up above rear diff, matybe the source of the blown fuse (xray vision)
Does anything else not work around the dash area?? like clock or dome light or cigi lighter?
Andrew

The cross over solenoid sounds like it is faulty. I have had this happen before.

They are located just in front of the rear diff - there is two one for the supply and one for the return. If you have a multimeter you can test to see if the power comes one when you switch the switch. If you do not have a meter then simply put your finger on the outside of the solenoids and see if you can feel them switching when someone pushes the switch in and out (must have Igntn in ON pos without engine running). Have a go and see if this is the problem. As I said it has happened to me however my light still operated.

Hi again. Start by turning on the ignition and having a friend assist switching on and off the subtank whilst you listen for the tell tale clicking of the solenoids above the rear diff. If nothing happens there, they arnt getting the signal, and your problem is further back. Check for loose wires down there...also check for connection in the various wiring plugs, take some wr40 to them and pull them appart/spray/put back. f that doesnt help, then the problem is further back at the dash.
If the fuses are good (and globe) it could be the switch, but it will be the very first one ive heard of...the problems usually stem from mud and connections, or sticks dislodging wires...
Being a new purchase, i would check to see if the solenoids are there...as the previous owner may have encountered problems and decided to disconect them.
Andrew

Well thankyou guys.
I'll take all that info with me Monday to the electrician, and see if we can't knock this on the head.
Mechanically it has been well looked after, but there were a lot of disconnected wires and loose connections throughout, so it may well be something come adrift.

I'll let you know what happens, and thankyou again.

Wendy.

Hi Wendy,
maybe fail due to lack of use, If this is the case make sure the fuel that's in there hasn't been there for years,this WILL give your mechanic something to do,If there is any way you can find how much is in there (lots/not much)I would consider throwing it away (max 50lts) cheaper than a full system clean out.
Problem is that algae can grow in un-used diesel mixed with a bit of condensation makes life fun!
Reiterating prev. post it sounds a lot like elec prob.

Shane

I had this problem in my Troopie about 4 years ago so off I went and bought a set of Solenoids , They are very expensive but if your lucky and just happen to drop into Bell & Moir Toyota in Mt Isa one can score a bargain because a lot of stuff is taken off the new underground vehicles and they flog it off cheap , so yep I got a cheap set, BUT after about 4 months same thing again , So what I did was open both fuel Caps, drop the main fuel line from the filter and forced compressed air back down the line until I heard bubbles in the front tank, then switched over to the rear tank and did the same until I heard bubbles , problem solved for about 4/5 months and same again , I been doing this operation now for 4 years , the last time was about 3 months ago , What I think is is it either gets an air lock or something small fouls the solenoid ,

Doug

just saw the post. i would not immediatly suspect solonoids as even they they do go they are accompanied by other syptems. This is due to there being 2 solonoids
so if the supply is not working from one and the rerurn is it will over flow one of the tanks as it tkes from the near empty tank and returns to the full tank. other symptom is it can use heeeps of diesal as it takes from a full tank and returns to an empty one