Need to locate the amplifier blower motor resistor for a 1999 Nissan maxima. It is not the one listed according to the vin. The one I took out has a cage in the back with air holes for cooling and have only four spade connectors which only three is used because the harness have three wires one black one blue with white stripe power on from motor. and one small blue wire with yellow stripe. Dealer is puzzle they having all kinds of problems identifying part.Can you offer any help. Cpttrevor
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I suggest you find your fuse/ relay center check fuses and try new relay, I think the relay is 75% at fault most of the time.
Blazerk from Altima forum suggest
Back probe the blower motor Blue/Yellow circuit and tap it to ground, if that doesn't make the blower operate, the blower motor/power transistor assembly is bad. When the blower motor does operate while grounding that circuit, the climate control panel may be faulty, repeat the test from the connector at the control panel to verify the wiring is not damaged. Also, When verifying voltage, Use the power and ground wires to the blower motor. Other grounds may give you faulty readings.
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you have an open blower resistor assy.easy fix however in most cases failure is due to blower motor intermittently drawing excessive current and damaging resistor.best solution is to replace both the resistor and motor
if your blower motro only works on the #4 setting you need a resistor.cheap and easy to change.located next to blower motor under pass. side of dash.two phillips screws secure it.if it fails again replace blower motor as it is drawing too much current and overheating resistors.let me know how it turns out.
you replaced the switch or the resistor. They are two different parts. The resistor should be located near the blower motor. Since high speed bypasses the resistor I would say the resistor is the problem.
Also you didn't mention if you had auto heat, auto heat with navigation, or manual heat. It can make a difference in how to approach your problem. The info I provided above would be for manual heat since it is more common.
For more info on blower motor diagnoses you can click here. Your would be a ground side controlled system since the switch supplies the path to ground.
The blower resistor should look like a credit card if it is manual air and it is located near the blower motor. Remove connector and then two screws and it should slide out. Replace with the new one. If you have auto air then the blower motor is regulated by a fan control amp which is located behind the glove box.
yeh its located under the passenger side glove box,its in the heater box beside the heater motor ,,2 scews hold it in and it looks like a credit card when its out,,,,
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