Blower motor doesn't work
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Cargo Master
Joined: Oct 2018
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From: unfortunately Germany
Blower motor doesn't work
2006 F350 6.0 blower motor doesn't work. Removed it, powered directly at battery: works
I only found fuse 23 (passenger compartment) and fuse 2 (Power Distribution box) could cause the issue. Both are ok. At the blower connector there is batt power.
Connector wires: orange/black and brown/orange.
Whats to check next? Thanks.
I only found fuse 23 (passenger compartment) and fuse 2 (Power Distribution box) could cause the issue. Both are ok. At the blower connector there is batt power.
Connector wires: orange/black and brown/orange.
Whats to check next? Thanks.
Fleet Owner
Joined: Nov 2003
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Have you checked ground 108 (speed controller ground) - (EDIT: delete wrong location, correct location in post #4 below)?
Does it work on any speed? I assume you have EATC (Electronic Automatic temperature Control).
Does it work on any speed? I assume you have EATC (Electronic Automatic temperature Control).
Hotshot
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From: Jersey Shore
Edit *******Since Mark has edited, to make this less confusing in the future, Mark was initially pointing to the braided cable under the floorboard, hence the back and forth.
Originally Posted by bismic [img]images/buttons/viewpost.gif[/img]
Have you checked ground 108 - 12 gauge braided cable under the passenger footwell between the frame and body?
Does it work on any speed? I assume you have EATC (Electronic Automatic temperature Control).
Mark, that would be redundant to the 12ga at the firewall to the engine block and 8ga pass batt to the fender. Those are parallel circuits to the body tub for grounds.
Hartwig, does your model year use a resistor pack for speed control of the fan?
Originally Posted by bismic [img]images/buttons/viewpost.gif[/img]
Have you checked ground 108 - 12 gauge braided cable under the passenger footwell between the frame and body?
Does it work on any speed? I assume you have EATC (Electronic Automatic temperature Control).
Mark, that would be redundant to the 12ga at the firewall to the engine block and 8ga pass batt to the fender. Those are parallel circuits to the body tub for grounds.
Hartwig, does your model year use a resistor pack for speed control of the fan?
Fleet Owner
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Thanks. My 06 manual does not show it as a redundant - but on second look, it does show the ground point is at the passenger firewall.
The horn, wiper motor and some lighting use that ground circuit also, so that's an easy tell.
The horn, wiper motor and some lighting use that ground circuit also, so that's an easy tell.
Hotshot
Joined: Dec 2014
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From: Jersey Shore
All three are parallel, you can't separate them.
As a parallel circuit, they all flow a percentage of the current flow. That volume changes if one is broken, but all three are needed to equal the 4ga positive cable to the CJB.
As a parallel circuit, they all flow a percentage of the current flow. That volume changes if one is broken, but all three are needed to equal the 4ga positive cable to the CJB.
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Cargo Master
Joined: Oct 2018
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From: unfortunately Germany
Depending on the setting on the clima controller there are 4-14V at the connector blower motor.
I reply later, still on the ride southbond.
I have this clima controller (power off in pic)
thanks guys.
I reply later, still on the ride southbond.
I have this clima controller (power off in pic)
thanks guys.
Fleet Owner
Joined: Nov 2003
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I see what you mean now as far as the body tub grounds, just that the wire from the blower controller needs to get to that point in good shape.
FWIW, my manual shows G104 as a separate ground point (and number) - 8 ga from the passenger battery. I can't recall on my truck if it is actually a separate ground point from G108 or if that is just how it is represented.
Also, the EATC question (and work at any speed) should be the same as the resistor pack question shouldn't it - as far as troubleshooting path goes?
FWIW, my manual shows G104 as a separate ground point (and number) - 8 ga from the passenger battery. I can't recall on my truck if it is actually a separate ground point from G108 or if that is just how it is represented.
Also, the EATC question (and work at any speed) should be the same as the resistor pack question shouldn't it - as far as troubleshooting path goes?
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Fleet Owner
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That is EATC.
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Cargo Master
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From: unfortunately Germany
Thread Starter
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Cargo Master
Joined: Oct 2018
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From: unfortunately Germany
Hotshot
Joined: Dec 2014
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From: Jersey Shore
Mark, G104 is the only ground point shown in the manuals between power sources (battery and alternator). The other two braided wires (12ga) are not shown, and are called out as bonding cables, but are never noted in the diagrams. Which makes people believe they are inactive. They are not. They add a good amount fo the current flow, and are bi-directional depending on starting vs running.
Remember, I'm an electron flow guy, not a current flow guy. When people are trained in current flow, they overlook the negative side connections. Going by the manual diagrams only, this is missed.
By the diagrams, positive flow goes from the positive battery post to the CJB by a 4ga cable. By the diagrams, negative flow goes through the 8ga negative battery post connection to the inner fender. That does not add up and restricts (8ga resistance) the voltage through the 8ga cable. 8ga + 12ga + 12ga = 4ga.
Remember, I'm an electron flow guy, not a current flow guy. When people are trained in current flow, they overlook the negative side connections. Going by the manual diagrams only, this is missed.
By the diagrams, positive flow goes from the positive battery post to the CJB by a 4ga cable. By the diagrams, negative flow goes through the 8ga negative battery post connection to the inner fender. That does not add up and restricts (8ga resistance) the voltage through the 8ga cable. 8ga + 12ga + 12ga = 4ga.
Hotshot
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From: Jersey Shore
You are testing the voltage without a load, correct?
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Cargo Master
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From: unfortunately Germany
Thats correct Jack. Measured with Multimeter at the connector (unplugged from blower motor)