electronic shift 4 low
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electronic shift 4 low
I have a 1990 manual Bronco II with automatic locing hubs and a on dash button electronic shift. I just purchased this vechile about three months ago and both the 4 high and 4 low tested good. I have recently tried to use my 4x. It shifts into 4 high with no problems but when I hit the 4 low button it just blinks. I already know that the vechile needs to see the two conditions of having the the brake derpressd and haveing the vechile in neutral, it stilll doesn't work. I have not found any good schematics so that I can track down and test correctly. Any suggestions would be helpful.
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I have heard of the possibility of it being the shift motor. I have tried tapping it with no results. When it shifts into 4 high it sounds like the motor engages solid. When I shift to 4 low I get no sound from the motor. Can it still be the motor? Is it possible that it could be the shift position sensor? What does this do? I would like to confirm that the control box and the motor are getting the correct voltages at the correct times. If anyone knows how to test for this and know how I can get a schematic let me know.
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I have tested the electronic control module for the electronic shift. According to the internal self test it is ok. I am starting to suspect a sensor is bad or has a missing connection. Is there a way to test this?
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http://ylobronc.users.superford.org/...6/elec1356.htm
I found this site that gives a very good descreption on how to test all electronic funtions of the electronic shift, including all sensors and switches.
I found that I had loose connectors on one of the plugs for the electronic shift module. I made sure the connections were good and now I have 4 low. Thanks!
I found this site that gives a very good descreption on how to test all electronic funtions of the electronic shift, including all sensors and switches.
I found that I had loose connectors on one of the plugs for the electronic shift module. I made sure the connections were good and now I have 4 low. Thanks!
