Question about 1998 Lexus LS 400

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1998 Lexus LS400 has no blower

Fan fuse has blown for A/C and heater. I do not know which fuse to replace to fix. Do not have owners manual.

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You need to just keep changing fuses until you find the right one. Bypass the old relays with a paper clip in the fuse panel with a paper clip and pliers in the in and out. When they come on you know the problem is the fuse or relay.

Posted on Jun 23, 2009

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2 Answers

Repair of A/C and heater fan not working


1998 JK jeep , ive posted these tests and the free FSM book here, 100s of time.s
search much?
its the heater blower. failing.
DOES IT BLOW ON HIGH?????????? this is #1 important.
and like all such blowers, it can fail for all these ways.
even a loose wire.
1: fuse blown, (always first, for the end of time)
2: controls bad.
3: blower bad.
4: wire to any of the above, bad. (not conducting or shorted)
all cars,. some newer cars a computer runs this but is #2




the book is free.
98jx
click (spoon fed) JK 96+
click wiring
click 8w2-1 index. then see heater. blower.
blower is page 8w42 in the real fsm
what does it show.?
JB25 fuse not blown? (answring for fan dead no high)
Relay works>? tests, like all relays we test. sop
gas engine?
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on HIGH the lever blower , on high grounds the motor blower
if the relay has power to blower 12v pin A ,dark green
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it only takes a $10 walfart meter to find cause.
12vdc across the blower pins on high is goal.

here is the free book, and is REAL not some PoS clone RAG.
http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service

Sep 26, 2016 | 1998 Jeep Cherokee 4WD

1 Answer

My 30 amp fuse to my electric fan is blown in my 1998 isuzu rodeo, will that keep it from starting


1st You should replace the fuse.
If you mean your engine cooling fan, then don't drive it untal it's fixed. It can keep the car from starting as a safety procedure so you don't overheat and blow your engine.

If you mean your A/C-Heater blower fan you can start and drive a car with this fuse blown
Hope this helps mike

Mar 29, 2015 | 1998 Isuzu Rodeo

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No elctirc to replaced heater blower


blown fuse..burnt up resistor block..bad ground..

Dec 30, 2013 | Cars & Trucks

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AC/Heater Blower Fan in 1990 LS400 works intermittently


Due to the age of your vehicle, the brushes in the fan motor are worn out. you will have to replace the fan motor, it is not serviceable.

May 30, 2017 | 2001 Lexus RX 300

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Location for blower motor/heater/fan fuse?


Before you rip, check the 30A HEATER CIRCUIT BREAKER in the instrument panel fuse panel. The input is hot with the engine running. CB output connects directly to the heater blower motor. A cluster of heater blower motor resistors determines blower speed as selected by the blower switch in the heater control assembly. The switch setting is sent to the powertrain control module (PCM) which acts to turn the blower motor on at the selected speed.

Sep 22, 2012 | 1994 Ford Escort

1 Answer

The switch for the heater moves however no fan noise and no heat


Go to the owners manual if you have one that came with the car and look for the fuse block that contains fuses for the car. Find the one for the heater and see if it is blown. You can tell if there is a break in the small joint while looking at it. Replace it if is is bad. Also you can check your blower resistor, motor, switch, and relay until you track it down. Could be a simple fix but it could be a process of elimination.

Dec 01, 2011 | 1998 Mercury Mystique

1 Answer

My bmw 318 is blower fan not working


Blown Fuse
  • Usually the first thing to inspect when the blower fan stops working is the fuses to see if any are blown. Locate the 10A cluster fuse or the 25A HVAC fuse in your car manual, and examine them to determine if they need replacing. The car owner's manual will tell you where to find the fuses that are connected to the heat and/or air conditioning. On the interior fuse panel of the car, a 30 amp fuse is labeled "Heater" or "HVAC."

Bad Blower MotorIf the fan only works on setting number 3 or 4, or just on the highest setting, it is most likely that your blower motor is failing and is about to die. Use a voltmeter to test the amount of voltage at the blower motor connector with your ignition on and AC running. If it reads 12V, the motor needs replacing.Automatic Climate Control SystemAnother thing that causes the blower fan to malfunction is the Automatic Climate Control System (ACCS). If the ACCS's settings are off, it may cause the fan to stop working. If it is the climate control on the car, typically it is a bad thermostat or electrical circuit that is the culprit.
hope this helps, James Booth

May 17, 2011 | 1996 BMW 318

1 Answer

Heater/defrost/ac does not blow in my 2006 tacoma. worked this morning, parked at work, came out half hour later and would not work.


what has most likely happened is that a fuse has blown that is in your blower fan circuit. Check your owners manual, and see if there is a fuse to that system, if there is, check and see if it is blown. If it isn't, then the problem could either be your blower fan itself, or your blower motor resistor. Generally, when the blower fan goes bad, no speeds of the fan work. When the Blower motor resistor goes bad, usually only 1 speed of the fan works. Try the first suggestion i gave, and it everything checks out in the fuse box, then try all of your fan speeds. If one works, you need a blower motor resistor, if none work, then it is most likely your fan. Let me know how it goes and i'll do my best to assist you further. good luck.

Jan 13, 2011 | 2006 Toyota Tacoma

1 Answer

My heater fan stopped working how do i fix it.


either the fuse to your heater blower motor is blown or the blower motor itself is shot. Check owners manual for location of blower motor fuse and make sure it is good, if that still doesn't work you may need to take it is to have it tested to see if the motor is bad. If you know how to test with a multimeter you can do that as well and just replace it yourself if it is bad. It is often tricky to change because it is on the firewall in the engine bay generally.

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