Fed speed sensor are outside the trans on case near axle
SOURCE: locassion of output speed sensor on 2003 Town and Country
The input and output speed sensors look identical on the connector side. The one over the solenoid pack is the input, the one closer to the left frame rail or left front wheel is the output sensor. I hope this helps.
SOURCE: transmission input speed sensor location
It is located on the front of the transmission. you will see 2 of them one on the left under small transmission lines it is the input then to the right behind the radiator overflow there is the other one. Easiest way to change them is with a 1" deep well socket
SOURCE: I need to replace the transmission speed sensor
usually they are at the back of the tranny with a 2 wire plugin and one bolt holding it in...if not it may be part of your rear ABS sensor in your rear end...do you have any codes about ABS
SOURCE: where on the transmission is the speed sensor
If you remove the air filter box, the Input shaft speed sensor can be seen on the top of the transmission, beneath the cable shift linkage. You'll have to remove some brackets to move some electrical cables and the like out of the way, but it's a pretty straight forward remove/install. The output sensor is also on the top of the transaxle, but further back towards the firewall. To differentiate between the two: the input shaft electrical plugs in vertically, the output shaft electrical plugs in horizontally. BE SURE to completely clean all dirt/sand/debris away from the sensors before removing them.
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