1998 LC. Heat/AC fan not working. Does not have Nav. (1 Viewer)
- Thread starter BOB F
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Trunk Monkey
Moderator
07 maybe? How about a little more details. No nav meaning it doesn't have nav or nav isn't working?
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Pull the blower motor and connect to 12volts. See if it spins. I haven't pulled mine but I believe it is 3 screws under the glove box.
Trunk Monkey
Moderator
98 Nav wasn't even an option, so no need to clarfiy. Check fuses and as suggested, check blower fan.
Check relays/fuse then check blower motor, my bet is on the blower motor crapping out.
I had a similar issue with mine, blower was stuck on for a bit, I pulled the fuse then nothing.... It was the temperature control unit. Very $$$. I found one used from TLS Auto in CA for $199. In fact they sent me the entire unit ( dash assy, controls etc). I dont know if this is your issue but if it is I would check with them as it is a $800-900 replacement OEM price
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Thanks Aaron. I'll give them a call if I get to that.
Check for 12V and good ground at the blower motor-if it's ok replace the blower motor. If not, check for 12v at the blower resistor-if it's good, replace the blower resistor. If not, then your problem is control or power supply. The resistor should have a thicker wire for the power supply to the blower, and a thinner wire for the PWM signal from the HVAC control. There should be voltage on that one as well.
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Thank you for this.
I have 14.2v into the resistor and 1.6 out.
I ordered a resistor. Internally inspecting it I don't see anything obvious, although the clear gel material is somewhat liquid like. From overheating?
Hard to say. They're a common problem on lots of vehicles.
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Resistor didn't fix it.
The control unit is 88650-60400. Replacements are $615. None on eBay used.
There is 13v across the large blue/white wires going into the resistor. But 2ish coming out to blower. I'm thinking the control unit is not sending the correct voltage along that third thin wire to the resistor ?
I'd the control unit the next step? Ideas?
Thank you
The control unit is 88650-60400. Replacements are $615. None on eBay used.
There is 13v across the large blue/white wires going into the resistor. But 2ish coming out to blower. I'm thinking the control unit is not sending the correct voltage along that third thin wire to the resistor ?
I'd the control unit the next step? Ideas?
Thank you
What's the voltage on the thin wire? It should change with Fan speed. Try meauring on High and low.
On second thought I might be wrong on that. The thick wire from the resistor to the blower should change with fan speed. There should be voltage on the thin wire as well though.
I have the FSM for the 2002. It shows power into the blower relay on a white/red wire. If you are going to try to replace the control unit
I would look for part number 84010-60171. I just went through this process when I converted my navigation to a non-navigation system. These pieces are readily available for $50 plus shipping. Some places try to piece these out but most sell them like this.
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