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post #1 of 2 (permalink) Old 10-29-2012, 05:28 PM Thread Starter
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Join Date: Oct 2012
Location: Edmonton,AB
Posts: 2
4x4 lights dont turn on?

Hey guys,
Just want to say i am new to the fourm.My names Christian and i drive a 2006 F150 xlt 4x4

It recently snowed here ( Edmonton AB ) and i wanted to make sure the 4x4 worked before we got more snow
I switched the 4x4 switch to 4hi and the light on the dash flickered on for 1 second then stayed off
I waited a couple seconds still nothing
I wanted to see if maybe the light burnt out so i turned in a circle and the truck was grabbing and was hard to turn. ( hard to explain but the turning is different in 4wd )
Put it back into 2wd and did the same turn and it turned easy
The light didnt turn on either time
I shut the truck off, turned it to the 'run' position and the 4hi and 4lo lights illimanted for a couple seconds and went off with the other lights (doing its start up dionostic )
What would the issue be if the lights not coming on but 4x4 is engaging?

I also forgot to mention, i scanned my truck couple months back as my tranny was shifting oddly and i had a IWE Solonoid Code that came up when i was looking at all the systems. Could this cause the light to not come on but for 4x4 to work?
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post #2 of 2 (permalink) Old 10-29-2012, 06:52 PM Thread Starter
Forum Newbie
Join Date: Oct 2012
Location: Edmonton,AB
Posts: 2
Here is a video showing whats going on.
I removed the IWE solonoid and it looked good, also i checked all the lines going to the front hubs and no water was in them
I did a volt and a resistance test on the connector that goes into the IWE Solonoid ( the harness side )
I got 12V of power when it was in 4HI and i got 7.12 ( the setting was set on 20K ) when the switch was set to 4HI
The code i have is C1979-IWE Solonoid Circuit
Here is the video
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