zt 190 over heat? help please

[SD1too]

Originally Posted by BOZZ

Fan not working when I do demist test ...

Can I check that the engine was running at the time of the test Boriss?

Simon

[BOZZ]

Originally Posted by SD1too

Can I check that the engine was running at the time of the test Boriss?

Simon

Hello Simon ,yes it is engine was cold and demist test I done when I start up engine.

[SD1too]

OK, do you have access to the control box? If so, is there +12v ignition on the yellow wire?

Simon

[BOZZ]

Originally Posted by SD1too

OK, do you have access to the control box? If so, is there +12v ignition on the yellow wire?

Simon

I will try work out correctly , control box you mean near fan? and yellow wire is that see picture?
if that then no more as I drive car every day and fit all front in one piece and if I can know what cable is on the plug then I possibly can have access to wire from plug

[SD1too]

Thanks for the photo Boriss. Yes, it's that yellow wire.

If you can arrange access to the two large connectors (whilst using the car) then we're in business!

Identify the plug with thick brown/blue, yellow/blue and blue/red wires.
Separate it.
Place your DC voltmeter between the yellow/blue wire and earth (ideally battery -ve).
Switch on the ignition.
Do you see +12v?

Simon

[BOZZ]

Originally Posted by SD1too

Thanks for the photo Boriss. Yes, it's that yellow wire.

If you can arrange access to the two large connectors (whilst using the car) then we're in business!

Identify the plug with thick brown/blue, yellow/blue and blue/red wires.
Separate it.
Place your DC voltmeter between the yellow/blue wire and earth (ideally battery -ve).
Switch on the ignition.
Do you see +12v?

Simon

Hello Simon , did today check on ignition "on"I recive +11.45v from yellow wire.
Where to go next ?Thank you very much for Your help.

[SD1too]

Originally Posted by BOZZ

... did today check on ignition "on" I receive +11.45v from yellow wire. Where to go next ?

Good, thank you. You say "yellow wire" so do you have access to the control box at the moment? If so, with the engine running and the windscreen demist button pressed, are you getting +12v on the thick red wire?

Simon

[BOZZ]

Originally Posted by SD1too

Good, thank you. You say "yellow wire" so do you have access to the control box at the moment? If so, with the engine running and the windscreen demist button pressed, are you getting +12v on the thick red wire?

Simon

Tbh, me much easier get to big two plugs then to control box
I can probably in hour get to control box and back tomorrow.
Can you please may be give couple more ways to me .Say if i cannot get to the box then where I go and may two possible ways .( if+ yes) and ( if+ no)where to go.
Or if I get to it and if (yes I have 12v on red wire) (and if no ) what to do next ?
Thank you.

[SD1too]

Originally Posted by BOZZ

Tbh, me much easier get to big two plugs then to control box

OK, here's an unconventional short cut then!

1. Locate the other connector, with blue/yellow, blue and black wires.
2. Separate it.
3. On the male plug, from the control box, locate the terminal with the plain blue wire.
4. Attach a wire to the plug terminal and connect it to earth.
5. Start the engine and press the windscreen demist button.
6. Does the fan run at slow speed?

Simon

[BOZZ]

Originally Posted by SD1too

OK, here's an unconventional short cut then!

1. Locate the other connector, with blue/yellow, blue and black wires.
2. Separate it.
3. On the male plug, from the control box, locate the terminal with the plain blue wire.
4. Attach a wire to the plug terminal and connect it to earth.
5. Start the engine and press the windscreen demist button.
6. Does the fan run at slow speed?

Simon

Good evening , ok I done as you suggest above and nothing fan not run at slow speed
Then I get to control box and check one more time +12v in yellow wire and yes big red wire have +12v too.
And exactly today outside temperature shows -28*c before was work correctly.
But Simon wen we managed fix the fan ( or you ) next job will be from start I still have building high pressure in the system and antifreeze spiting out from expansion tank cap .( aaaaaarrrrr)