My car was jumped incorrectly. The car seems to operate just fine, but the fan does not blow. When the ac or heat is turned on (to any level), nothing seems to be blowing out of the vents. The fuses were checked visually and several replaced. One of the fusible links was removed and replaced (one of…

Yes, this was already done, there is not 12 volts getting to the blower. Also, in the picture I am back probing (incorrectly) the connection at AF3. The AF4 connection is the one that clips into the blower fan (which was back probed to verify that it is not receiving power).

I assume that one of the fuses in that module shown previously is the 50A fuse for the blower. That is the one of concern.

Yes, thats a correct assumption. One of the fuses in the module is the 50A fuse for the blower.

Okay, that makes things simple by not having power from the fuse. The trouble is most likely at the connection where the blue and white wires are shown in the diagram to connect together. I don’t know where that is but @Nevada_545 may have that info.

Looking at the fuse assembly in post # 20, I don’t see a blown fuse segment, I believe it is the second one. With no blown fuse and no power on the blue wire, the damage must be in the fuse box. Examine the connections below the fuse assembly.

Connector AF4 is the one in the picture, the back side of the connector should be the white wire.

Okay, I follow you. If that is the case then it seems that the black wire going to that same connector isn’t shown in the wire diagram, that I can see at least. I assumed that the connector was A3 since the drawing shows the same two wire colors that are seen in the picture.

Sorry for all the confusion. I am glad we narrowed down the culprit, but am worried about this next step. Do you think this is a possible DIY repair or will it need to be taken to a shop.

It should be pretty easy to find the problem and fix it. You are just trying to find a bad connection that is between the fuse and the connection to the blower motor. If that blue wire your meter probe is on, is the correct blue wire that ties to the fuse, then you just need to find the other end of…

2010 Lexus RX 350 — fan won’t blow after jump

Maintenance/Repairs

Cougar July 10, 2020, 8:52pm 36

@Nevada_545, it seems that the picture of the meter shows the probes are connected to connector A3. Do you know where connector A4 is at, which ties the blue and white wires together for power to the blower?

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2010 Lexus RX 350 — fan won’t blow after jump

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