Hello,
the other day I noticed that the control for the heater fan is not working as it should - I've got off and 2 speeds, not the 4 I should have. I've done a search but can't find any previous info.
Does anyone have any experience, before I start taking stuff to bits at the weekend.
Gav.
It's more or less common that the speed control thingy falls apart with age. It has just resistor wires and over time they break.
You can also fix it yourself, just solder the cut wires together or replace the broken wires. Or just buy a new one.
It's this part:
m http://www.toyodiy.com/parts/p_E_2000_T ... ?hl=87138B (http://www.toyodiy.com/parts/p_E_2000_TOYOTA_MR2_ZZW30L-AKMQHW_8715.4.html?hl=87138B) m
Tem, thanks for the reply, you sound like you've got good experience with this.
I've just removed the heater fan control assembly, just to have a look and see if I could find the resistor you mentioned and must admit I'm stumped!
Do I need to remove the stereo to access the resistor?
Many thanks,
Gav.
The resistor is in the heater assembly. I'm writing this from the comfort of my desk, using the manual, so forgive me if I ask you to do anything impossible, but it looks like you should be able to see it. Under the dashboard on the passengers side on the heater box it in the place shown in the link from Tem above. Which two speeds have you got?
Quote from: "cclarke99"The resistor is in the heater assembly. I'm writing this from the comfort of my desk, using the manual, so forgive me if I ask you to do anything impossible, but it looks like you should be able to see it. Under the dashboard on the passengers side on the heater box it in the place shown in the link from Tem above. Which two speeds have you got?
When I select "low" the fan starts and continues to run through the next two increments, with no increase in speed. It's only when "High" is selected that the fan speed increases.
I'd already put the control back in when I posted earlier, so I'll have another look for the resistor tomorrow or Saturday.
If you can get the switch out again (sorry) you can try the following tests
On the switch you should get the following
Terminal 1 should be connected to the following for each position (for the fault you describe, terminal 5 &6 will not be connected)
Switch position Off Low 2 3 High
Terminal connected None None 6 5 4
On the wiring loom connector, with the ignition on you should get 12V on terminals 4, 5 and 6 (again your fault should give 0V on 5 & 6)
Quote from: "cclarke99"If you can get the switch out again (sorry) you can try the following tests
On the switch you should get the following
Terminal 1 should be connected to the following for each position (for the fault you describe, terminal 5 &6 will not be connected)
Switch position Off Low 2 3 High
Terminal connected None None 6 5 4
On the wiring loom connector, with the ignition on you should get 12V on terminals 4, 5 and 6 (again your fault should give 0V on 5 & 6)
Sorry, this is of interest to a little project I'm working on at the moment, in the above, what's the difference between Off and Low! If they are both connected to no terminal, how Low work?
Off is a separate switch terminal that controls the fan relay only, I left it out as it isn't (I hope) the problem
Quote from: "cclarke99"If you can get the switch out again (sorry) you can try the following tests
On the switch you should get the following
Terminal 1 should be connected to the following for each position (for the fault you describe, terminal 5 &6 will not be connected)
Switch position Off Low 2 3 High
Terminal connected None None 6 5 4
On the wiring loom connector, with the ignition on you should get 12V on terminals 4, 5 and 6 (again your fault should give 0V on 5 & 6)
Thanks for the info CC. With respect to the terminals, are they numbered, or is it a case of 1 = top left, 2 = next along etc?
I'll probably be having a play around in the morning, all being well.