89Roadster

Blower motor quit on me, ordered a new one and replaced it and still nothing. Fuses in the footwell are good, does anyone know of anything other than the climate control head unit that might cause the blower motor not to function?

Dano523

Blower motor gets it power from Fuse 28 in the engine fuse block on the Rd/black wire on the blower motor connector.

Black wire goes to ground point G202
So quick check with multi meter on these two connector pins( A and C) would be showing 12v.

The Gy/black wire is the one that goes back to the HVAC controller to control the motor speeds on the ground side of the math.
So a quick way to test if the problem is the HVAC controller if you have power on the A/C pins since the HVAC controls the motor via the ground side of the controller in the motor , connect the connector back on the blower, use a test light to piece the gy/bk wire and ground your 12volt test light probe to ground.

Here is the wiring schematic if you need it for the blower and controller and not that the actual speed controller for the blower is in the motor on the back cover, and the hvac controller is just controlling the motor's own speed controller by the ground off it.
http://www.mediafire.com/file/ti208t...otor_.pdf/file

So if the problem is the HVAC controller, would bank that it problem is just a cold solder joint on the board that should be a easy fix by just resoldering the bad solder joint on its board.

89Roadster

Great information, thanks. I'll pull out the test light tonight after work.

Dano523

No worries and start with fuse 28 on both sides to make sure it has power through it. Hence problem may be under the upper fuse housing, to lower block, with a connector pin pushed down in the lower blocks from say the lower beam recall jumper wire install when the upper fuse housing was reseated, if the fuse shows power through it, but no power to the blower connector instead.