Help with front blower of Australian LX470 (mid-2003)

[suzie]

Greetings all,
Our air conditioner blower stopped working & we searched for post but none exactly helped. The most relevant we found was : Heater / ventilation fan / blower question

But our LX470 front blower configuration seems different. It was earliest batch of RHD in Australia with 5-speed transmission & curtain airbags (mid-2003). We'd really appreciate some help.

We removed the glove compartment & upper shield for the latch. This is what we see :

Glove Compartment Removed

• suzie
• Nov 8, 2018

Behind & below the ECU is where we can see the blower which is mounted vertically, rather than horizontally like what the other LX470 posting I referred to earlier showed :

Blower Configuration

• suzie
• Nov 8, 2018

Rather than the horizontally mounted blower I see in the FSM I downloaded, ours is vertical & does appear to be a tad complicated to dismantle.

We'd really appreciate if someone who is familiar with this issue can chime in on whether we should be removing the ECU and whatever else ... thanks very much in advance!

 

[suzie]

I should also add that the Blower Control part number is also different : Denso 87165-60010 (rather than Denso 87165-22050 in the '99 LX470). Thanks.

 

[nissanh]

Did all speeds stop? How is the fuse?

 

[suzie]

Did all speeds stop? How is the fuse?

Yes, all speeds not working. Checked fuses and nothing blown.

Did more research and noticed US versions have a rectangular air cleaner filter in engine bay but our Australian RHD LX470 is using the round air filter (17801-17010). We've just been told it's because our car model is regarded as JDM. Our VIN plate says UZJ100R-GNAGKQ with 2UZ-FE engine.

Thanks for responding...was just nervous about removing ECU etc to reach the air blower (would like to order replacement to see if that helps but don't know the part number).

Advice from someone familiar with this would be greatly appreciated.

 

[nissanh]

The two wire plug ( blue and white) should be the one going in to the blower motor. Those DC motors are solid and wont quit easily. If you can trace the two wires down and if those are the ones entering the motor, you should be able to manually test the blower and check its functionality. I have a spare resistor pack, which I see in your second picture. Before removing any wire plug, it is best to disconnect the battery first.

 

[2001LC]

These diagrams may help you find stuff. "Input your vin#"
HEATING & AIR CONDITIONING - HEATER UNIT & BLOWER | LEXUS LX470 UZJ100R-GNPGKQ UZJ100 | Lexus | Genuine Parts Catalogs | PartSouq Auto Parts Around the World

 

[suzie]

These diagrams may help you find stuff. "Input your vin#"
HEATING & AIR CONDITIONING - HEATER UNIT & BLOWER | LEXUS LX470 UZJ100R-GNPGKQ UZJ100 | Lexus | Genuine Parts Catalogs | PartSouq Auto Parts Around the World

Wow, that really helped...the diagrams indeed show a completely different blower fan configuration. Thanks!

Guess I'll try to remove the ECU to access blower unit becauseI can't see any blue/white wires that I can do a test of the blower. There does not appear to be a simpler way (?).

 

[2001LC]

If you can get to the motors' plug/wires, try jumping.

 

[suzie]

This is not looking good. I don't know the banana rating system works, but it just might be above our pay grade. We removed the ECU & behind it is a cluster of wire harness covered by a white plastic sheath blocking access to the blower unit. Kept looking around but could not see how to unscrew it. Has anyone done this before? HELP?!?!

LX470 ECU removed to expose blower

• suzie
• Nov 9, 2018

Here's the FSM diagram:

FSM diagram (Blower is not a 5mins job like other LX470!)

• suzie
• Nov 9, 2018

I also found out there is no cabin air filter on this car ... no slot either, Toyota just plain skipped it (but can see the imprint of where it is supposed to be ... but I've got bigger problems to deal with now).

 

[suzie]

Ok, new discovery ... got frustrated with blower housing & started banging on it. Guess what? The air conditioning came back (with kinda noisy whirring though) ... but only very briefly & then stopped again. Bang it again ... blows, then stop after a minute or so.

Now we *REALLY* have to take out that faulty blower. Anyone who has taken it out please help ... thanks a zillion!

 

[2001LC]

Sorry I can't help as your right hand drive is so different than what I see. Best I can do is give you a bump in the forum. BUMP!

 

[jerryb]

you should assume the fan comes out the bottom. remove the blower controller panel infront of the fan housing. I bet there are just three screws holding the fan in. DO not jump a bad blower motor without a fuse. Or run away when you see smoke.

 

[2001LC]

@jerryb You've done more electrical work on these rigs (NAV) than I. But I'm Not Sure why you feel jumping blower motor (at motor) such a hazard?

It's standard (in FSM) to jump motors as a test. Besides, as soon as you remove jumper from motor it has no power to it. So don't run just drop the connection if something strange happens.

@suzie I agree you need to remove if blower motor since it sounded that bad. Could be something got into cage blocking movement or could be motor has gone bad.

 

[jerryb]

I was just trying to get at the fact that these will catch fire fast. Toyota probably says in the book to use a fused test lead somewhere where it talks about diagnostic stuff in book one.
lol I was saying run- if you caught your fan under there on fire. It happens very fast. I've watched it happen. So I guess it makes me cringe.
google heater blower motor fire - Google Search

 

[2001LC]

Thanks Jerry. Wow I've not seen that before. Seems to deal with faulty wiring to motor on the BMW & F150.

I haven't seen my old fused tester/jumper in years. I use a very thin set of wires ~22 gauge, with tinny alligator clips. Which would melt if I keep them on longer than a few moments, which acts as a fuse I suppose. But no reason to run test more than few moments.

 

[nissanh]

The two pin connector at the fan control unit goes directly to the motor. Supply 12 V to the connector with wires (not to the control unit) and attach one wire to ground and the other (expose few wire strands out of the insulator) conneconnect that to positive battery terminal

 

[suzie]

@jerryb You've done more electrical work on these rigs (NAV) than I. But I'm Not Sure why you feel jumping blower motor (at motor) such a hazard?

It's standard (in FSM) to jump motors as a test. Besides, as soon as you remove jumper from motor it has no power to it. So don't run just drop the connection if something strange happens.
View attachment 1827710

@suzie I agree you need to remove if blower motor since it sounded that bad. Could be something got into cage blocking movement or could be motor has gone bad.

This is good stuff ... please may I know where you got that troubleshooting diagram please? I didn't see it in the FSM I downloaded. Your pointing me to where I can get a copy would be fantastic! Thanks in advance.

 

[2001LC]

I've many and they all have it, which FSM do you have? Difficulty if finding correct section in FSM.
If you search in mud you'll find many, here just a few I found.
1998 - 2007 Toyota Land Cruiser Factory Repair Manuals
FSM, Factory Service Manual, online? where to buy? which one?

 

[Njck22]

If you need your specific model fsm, techinfo.eu has all the oversea model's fsm. Buy a short membership and download what you need. But you should be able to make do with whats floating around here.

 

[Dilz]

I'm hoping to find out if you ever fixed this issue? My Land Cruiser is doing the exact same thing as yours, and I'm not sure where 2 start. I have found the Blower Motor ECU though.....