[Cousin Itt]

I think I did, the blower motor relay is the one in the fuse box under the hood, right

Yes it is.

 

[KenyHo1Gen]

Yes it is.

Yeah, that’s what I was thinking. I changed it out with another relay one and it still wouldn’t come on.

 

[KenyHo1Gen]

Yes it is.

Do you know if a oscilloscope can be used
to check fuses and circuit and stuff like that?

 

[KenyHo1Gen]

Do you know if a oscilloscope can be used
to check fuses and circuit and stuff like that?

Do you know if a oscilloscope can be used
to check fuses and circuit and stuff like that?

 

[royalbiggster]

The front one. Yes the one I installed is a brand new one
Is it possible to test voltage with one of these tools View attachment 166538

All you need is a digital multimeter and alligator clips. All you're checking for is voltage, and verifying the motor works when 12 volts is applied. First remove the wire harness and attach your DMM leads to the wire harness and check that you are receiving a 12 volt signal. If you are, you can try and apply 12 volts directly from the battery to the blower motor. If it doesn't turn on, it's the motor, if it does turn on, and you are getting 12 volts, check and make sure the wiring harness is clicking tight, and none of the wires are loose. Try moving the harness while attached to make sure you are getting good contact. Try while the fan is outside of the housing as well to make sure it isn't jamming against something.
If you are not getting 12 volt signal, it could be a short, an open, or relay, could also be something wrong with the climate control unit. You can role out a short by checking continuity between ground and positive on your DMM. If no continuity, could be an open (cut wire). Check continuity between ground wire and ground chassis make sure it is still grounded.
Sorry, I don't know where the blower motor relay resistor is on this unit, but I believe it is close to the blower motor. Maybe even on the other end of the wiring. Screwed into the housing. Could have gone bad.

 

[royalbiggster]

 

[KenyHo1Gen]

All you need is a digital multimeter and alligator clips. All you're checking for is voltage, and verifying the motor works when 12 volts is applied. First remove the wire harness and attach your DMM leads to the wire harness and check that you are receiving a 12 volt signal. If you are, you can try and apply 12 volts directly from the battery to the blower motor. If it doesn't turn on, it's the motor, if it does turn on, and you are getting 12 volts, check and make sure the wiring harness is clicking tight, and none of the wires are loose. Try moving the harness while attached to make sure you are getting good contact. Try while the fan is outside of the housing as well to make sure it isn't jamming against something.
If you are not getting 12 volt signal, it could be a short, an open, or relay, could also be something wrong with the climate control unit. You can role out a short by checking continuity between ground and positive on your DMM. If no continuity, could be an open (cut wire). Check continuity between ground wire and ground chassis make sure it is still grounded.
Sorry, I don't know where the blower motor relay resistor is on this unit, but I believe it is close to the blower motor. Maybe even on the other end of the wiring. Screwed into the housing. Could have gone bad.

As always, bro, thanks again for your helpful advice that I will definitely put into action ASAP

 

[KenyHo1Gen]

All you need is a digital multimeter and alligator clips. All you're checking for is voltage, and verifying the motor works when 12 volts is applied. First remove the wire harness and attach your DMM leads to the wire harness and check that you are receiving a 12 volt signal. If you are, you can try and apply 12 volts directly from the battery to the blower motor. If it doesn't turn on, it's the motor, if it does turn on, and you are getting 12 volts, check and make sure the wiring harness is clicking tight, and none of the wires are loose. Try moving the harness while attached to make sure you are getting good contact. Try while the fan is outside of the housing as well to make sure it isn't jamming against something.
If you are not getting 12 volt signal, it could be a short, an open, or relay, could also be something wrong with the climate control unit. You can role out a short by checking continuity between ground and positive on your DMM. If no continuity, could be an open (cut wire). Check continuity between ground wire and ground chassis make sure it is still grounded.
Sorry, I don't know where the blower motor relay resistor is on this unit, but I believe it is close to the blower motor. Maybe even on the other end of the wiring. Screwed into the housing. Could have gone bad.
[/QUOTE so do you feel like that tool from the picture I showed on post number would work for something like that if I just had to do it today until I can get a multi reader type gadget

 

[plplplpl]

A multimeter (they can be had for quite cheap now) is definitely a good investment. I can just about promise you this wouldn't be the last time you'd use it.

 

[undivide]

probably a blown fuse...
you should also download the FSM which should have wiring diagram for you to follow

 

[KenyHo1Gen]

A multimeter (they can be had for quite cheap now) is definitely a good investment. I can just about promise you this wouldn't be the last time you'd use it.

That’s definitely what I was thinking too

 

[KenyHo1Gen]

probably a blown fuse...
you should also download the FSM which should have wiring diagram for you to follow

Sounds like a plan thanks

 

[KenyHo1Gen]

That’s definitely what I was thinking too

I’m replacing the IACV hopefully tomorrow or Monday
Any thoughts or suggestions on this scanner reading?