Q: 4Wd Light Stuck On

[tango29]

thank you for you replies....

From what i saw today ( i had a auto sparkie looking at it with me ) he tested the relay out of the car and it was clicking.... he tested the pump in the car somehow through the relay... i'm guessing by just bridging accross the big wires... that was i believe, just to make sure the pump was not the problem. He traced the relay wire ( i'm guessing pin3 ) back to the ets c/u...i think it was a brown wire... thats why he was saying he thinks there is no signal to the relay..... possibly no siganl from ets c/u... surely it must be something simple......

[Tommy Kaira RL]

Ok it sounds like the relay is working. If you have a look at the schematic it shows a wire coming from the control unit from pin26 and see if a negative is coming out which goes to pin 4 on the relay. You can see on the relay the other side of the coil goes to a positive.

The problem will be either an earth from the C U or the wire is broken.

Show your auto elec the diagram. Should be able to work out simple control circuit wiring and work out if its at the C U

Thanks for the diagram Impul

[impul535w]

If you find any good information from your auto electrician please post it up, it was a relay issue I was having, replaced it and now it's a intermittent issue...

If you have time Brad I would love to drive up to yours and go through it?!?

[Tommy Kaira RL]

If you have time Brad I would love to drive up to yours and go through it?!?

Yeah I have time but what did you want to go through? I missed what IT is.

[impul535w]

Yeah I have time but what did you want to go through? I missed what IT is.

Just looking to find out what the intermittent issue might be before I get Iain from here to send me another pump to try... I guess will start from scratch

[Tommy Kaira RL]

Just looking to find out what the intermittent issue might be before I get Iain from here to send me another pump to try... I guess will start from scratch

Give me a call

[tango29]

Thank you again for your replies....... but this is really going to make your brains hurt now... a friend of mine and i have spent another couple of hours on this problem today.......

When you unplug the ETS relay under the air intake box you get 12v accross the plug of coil ( pins 3 and 4 ).... but when you plug in the relay, the voltage accross pins 3 and 4 drops to almost nothing instantly.

We again tested the relay out of the car by putting 12v accross pins 3 and 4 and the relay works fine. WTF!!!!!!!!!!!!!??????

[jasevr4]

This thread seems to have the most info. I'm getting intermittent 4WD light coming on. Fluid level is well over the High line when car is off, when I start it up (haven't even put it into gear yet), the level drops to just above Low. Sound right?

[zei20l]

bleed the system, it might have some air in it........

[Daleo]

This thread seems to have the most info. I'm getting intermittent 4WD light coming on. Fluid level is well over the High line when car is off, when I start it up (haven't even put it into gear yet), the level drops to just above Low. Sound right?

That sounds a bit odd, the level might change a tiny bit when the pump starts; but not a huge amount.

I've been wrong before, but It sounds like you might have air trapped, and the pump is filling the line, compressing the air and filling the line.

When the pump stops, the pressurised pocket of air is expanding, pushing the fluid back out of the line; forcing the fluid back into the reservoir much like a hydraulic accumulator.

[jasevr4]

Well that's exactly what I was thinking, but wanted to check before I got toooo much of a hunch!

[Daleo]

Sounds like it might be time to force the pump on and check those bleed points.

Jetwreck has done this before; I believe.

[jasevr4]

Turned the synchro mode and there's a groaning noise every time I turn it onto either synchro or snow. That said it sounds like it may be the hinge that switches modes (I remember reading something about this?).

Any info on bleeding?

[whitestag]

wrong topic sorry

Edited February 2, 2012 by whitestag

[KiwiRS4T]

Turned the synchro mode and there's a groaning noise every time I turn it onto either synchro or snow. That said it sounds like it may be the hinge that switches modes (I remember reading something about this?).

Any info on bleeding?

Don't know if the M<35 is the same as C34 but -

I get the car up on stands and run the engine - crack the bleeder at the back of the gearbox extension and keep the reservoir in the boot topped up with atf. Then there is another bleeder on top of the atessa pump above the diff.

[zei20l]

in the M35 there is a pump run loop next to the consult port. can run the pump while you bleed it. saves having the car running and your hand close to a turning prop shaft

[jasevr4]

in the M35 there is a pump run loop next to the consult port. can run the pump while you bleed it. saves having the car running and your hand close to a turning prop shaft

connect and disconnect this plug?

[Commsman]

connect and disconnect this plug?

That's the one.

[slippylotion]

So do you just unplug it and the pump will start or do you need to put +12v to it? What side of the plug will need the +12v if that's the case?

Thanks

[PN-Mad]

Disconnect, then make contact (and the pump will run), disconnect then make contact etc etc...