Heater controls/window switches

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JKH
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Heater controls/window switches

Post by JKH »

Hey people, anyone know why replacing my heater/AC control unit (which works fine) has caused my window switches and mirror adjust buttons to stop working? Haven't messed with anything else and windows/mirrors were working fine before.

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GDII
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Re: Heater controls/window switches

Post by GDII »

Could be a coincidence. The wires in the driver's door between the door and body can break causing these to stop working. But it's normally only 1 item. Maybe a fuse?
1990 SW20 MR2 G-Limited (GEN4 3SGTE swap early stages)
1996 AE101 Corolla Sprint NZ New Daily
1990 EP81 Starlet XL (Sold)
1990 EE90 Corolla XL (Sold)
Instagram https://www.instagram.com/sw20glimited/

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JKH
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Posts: 68
Joined: Wed Jul 03, 2019 10:54 am
Stomping Ground: Manawatu
Prime Mover: SW20
First name: Julia

Re: Heater controls/window switches

Post by JKH »

Yeah I'll check on the fuses today. I was hoping that was more likely, since it's windows on both sides that were both working fine before that now don't work (same with the mirrors). The mirror retract function still works though for some reason

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GDII
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Joined: Sun Jul 10, 2011 5:13 pm
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First name: Phill

Re: Heater controls/window switches

Post by GDII »

I took a look at the diagram. The windows are powered by the 30A POWER fuse and the mirrors are controlled by the 15A RAD & CIG fuse. Both of these are down by the drivers kick panel by the throttle pedal. If your radio works then this fuse is fine.

See if they are both good. If they are it's very likely it's the door harness. Try open the door at different angles to see if anything works. If it's random then we know it's the wires.

Let me know how you get on.
1990 SW20 MR2 G-Limited (GEN4 3SGTE swap early stages)
1996 AE101 Corolla Sprint NZ New Daily
1990 EP81 Starlet XL (Sold)
1990 EE90 Corolla XL (Sold)
Instagram https://www.instagram.com/sw20glimited/

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JKH
Guest of the Club.
Posts: 68
Joined: Wed Jul 03, 2019 10:54 am
Stomping Ground: Manawatu
Prime Mover: SW20
First name: Julia

Re: Heater controls/window switches

Post by JKH »

Well both fuses are fine. I tried moving the doors back and forward while messing with the windows but there was nothing at all, not even intermittent.
I think I'll pull everything out of the centre again and see if it's fixed, since it was all 100% fine before I replaced the heater controls, maybe something weird going on back there? Though I have no idea how that might even happen. I'll junk the radio at the same time I think, it's aftermarket and literal trash. If anyone has a spare factory single din let me know!

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JKH
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Posts: 68
Joined: Wed Jul 03, 2019 10:54 am
Stomping Ground: Manawatu
Prime Mover: SW20
First name: Julia

Re: Heater controls/window switches

Post by JKH »

Well I pulled everything I'd touched apart again and still nothing. No clue what happened. Oh well, least the windows are stuck in the up position

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GDII
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Posts: 4769
Joined: Sun Jul 10, 2011 5:13 pm
Stomping Ground: Wellington
Prime Mover: SW20
First name: Phill

Re: Heater controls/window switches

Post by GDII »

I'd be looking at the door harness for the right side.

Could have just been a coincidence that they failed at the same time you did that work.
1990 SW20 MR2 G-Limited (GEN4 3SGTE swap early stages)
1996 AE101 Corolla Sprint NZ New Daily
1990 EP81 Starlet XL (Sold)
1990 EE90 Corolla XL (Sold)
Instagram https://www.instagram.com/sw20glimited/

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