Cabin temperature sensor question
#1
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Artist Formerly Known As 84totheFloor
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Artist Formerly Known As 84totheFloor
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This is the internals of the cabin temperature sensor. Anyone know of its workings? I applied voltage across the circuit, and the fan did not spin. My sense is that the yellow wires monitor temperature while the standard power and ground wires run the fan. Is there any reason why the fan wouldn’t run if voltage was applied, other than the unit not working?
Thanks. 
#2
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Correct, yellow wires are for the NTC temperature sensor. Brown and red is the power supply to the little motor. Without the motor running, temperature control is very slow.
That thing is not magic. The motor is a very standard unit that you would find in toys or RC model applications. I guess it's just dirty. Take it apart and clean it first. The motor itself is NLA.
That thing is not magic. The motor is a very standard unit that you would find in toys or RC model applications. I guess it's just dirty. Take it apart and clean it first. The motor itself is NLA.
The following 2 users liked this post by Schocki:
85fortheDrive (05-03-2020),
Ducman82 (05-01-2020)
#3
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Artist Formerly Known As 84totheFloor
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Correct, yellow wires are for the NTC temperature sensor. Brown and red is the power supply to the little motor. Without the motor running, temperature control is very slow.
That thing is not magic. The motor is a very standard unit that you would find in toys or RC model applications. I guess it's just dirty. Take it apart and clean it first. The motor itself is NLA.
That thing is not magic. The motor is a very standard unit that you would find in toys or RC model applications. I guess it's just dirty. Take it apart and clean it first. The motor itself is NLA.