Jimny Z series (FJB43V) Air conditioning help

Morning Facade,

thanks for all the input.

I shorted the blue/red wire on the dual pole switch to ground & the aircon runs. So does that indicate that the aircon switch itself (push sw with green light) is faulty? Rather than a whole new aircon control panel could I just run a toggle switch or similar to turn it on & off etc??

Would it mean that the switch on the pole that switches the aircon 'on' by going to ground is faulty or that the ground connection on the other side of the switch is open circuit? I'll have a look!

Cheers,

Chris

I screen capped pages 108 and 109

The first page shows the switch. As far as I can figure, when the blower is on, the horizontal line that goes to the aircon switch is grounded. Pressing the air con switch now grounds the blue/red and activates the air con, via the pressure switch on the second page. The second pole of the switch grounds the green led so it comes on.

The second page shows the wiring to the air con controller and the 4wd controller.
I have no idea why the blue/yellow goes from the controller to the blower dropper resistor, I can only see it signalling that the blower is on low, as it will be grounded in med & high, maybe the aircon doesn't cool on low?







To answer your question, if grounding the blue/red is bringing the air con into operation, either the press switch is faulty (doesn't seem likely to me there is very little current) or the mechanism for grounding the horizontal line is faulty: i.e. the blower switch (seems more likely as it runs the blower motor)

I would try and test the press switch.
If both poles work properly it points to the main blower switch, so you might be able to cut the link between the switches, and transfer the ground wire. This will make the air con work whether the blower is on or not, but the green light will come on.

Hey Facade,

thanks so much for all that info & input you've put in here it's very much appreciated.

Fault discovered & repaired - it was a corroded track on the tiny pcb that makes up part of the dual pole push switch with the green light for the aircon. I'd previously pulled the air con panel out & split the switch to check all the main contacts of the blower etc. The panel is a bit tricky to remove & get back in but this time I got the whole blower aircon sw out & pulled it apart to reveal the corroded track. A bit of soldering & some copper wire & all ready to go back together. Thankfully it is all working again.

I wondered if that might be the same fault with the other thread.

Thanks again for all the input as it all went towards a good result.

Cheers,

Chris