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From: adamgamz on 16 Feb 2010 13:21
Hello, my blower motor isn't working. The A/C and heat are activating
however the blower motor won't power on no matter what selection I
make on the controls. I have jumped power to the blower motor and
verified it's good, I also pulled the blower motor resistor (Control,
Blower Motor P/N 87165-22040) But I'm not sure how to test this, Lexus
wants $230.00 for this piece. I'm not sure if this part is bad or if
this is multiplex related. My car is a 2001 Lexus GS300
From: m6onz5a on 16 Feb 2010 14:02
On Feb 16, 1:21 pm, adamgamz <adamg...(a)gmail.com> wrote:
> Hello, my blower motor isn't working. The A/C and heat are activating
> however the blower motor won't power on no matter what selection I
> make on the controls. I have jumped power to the blower motor and
> verified it's good, I also pulled the blower motor resistor (Control,
> Blower Motor P/N 87165-22040) But I'm not sure how to test this, Lexus
> wants $230.00 for this piece. I'm not sure if this part is bad or if
> this is multiplex related. My car is a 2001 Lexus GS300

If you put 12v to the blower and it works then it's most likely your
resistor, or the fan switch.

also check your fuses.
From: Paul on 19 Feb 2010 14:53
adamgamz wrote:
> Hello, my blower motor isn't working. The A/C and heat are activating
> however the blower motor won't power on no matter what selection I
> make on the controls. I have jumped power to the blower motor and
> verified it's good, I also pulled the blower motor resistor (Control,
> Blower Motor P/N 87165-22040) But I'm not sure how to test this, Lexus
> wants $230.00 for this piece. I'm not sure if this part is bad or if
> this is multiplex related. My car is a 2001 Lexus GS300

If the resistor is just a resistor pack and not a semi-conductor
circuit, then you should be able to test it with your ohmmeter.
It could also be the switch, fuse, circuit breaker, or relay.
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