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4WD always on

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Offline 3stagevtec

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Re: 4WD always on
« Reply #15 on: December 16, 2010, 12:42:20 PM »
I figured having the full hard copy would make finding stuff much easier, but If I were to pay for it, I would like to get all 4 sections.

I was actually looking in the wrong pdf file, so that's why I was having a hard time finding the troubleshooting table in section 7E. It's only until you mentioned page 6 that I figured I was looking in the wrong place.

I went through the table and realized that I was getting a constant 0V from the A4 pin in the harness (or the B/O wire). The constant 0V represents 4H or 4L. I am supposed to get around 6.8V when in 2H or N.

Now, with the switch disconnected from the TC, I am getting the exact 6.8V from the A4 pin as suggested by the FSM and the 4WD indicator on the dash has turned off.

I checked to see if the B/O wire was grounded and found that it was not.

So now it appears that the 4WD switch on the TC is bad.. I am now going to try and remove it to further test the switch. (I figure i'll cut the wires to get it out easy! lol)
« Last Edit: December 16, 2010, 01:10:36 PM by 3stagevtec »

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Offline 3stagevtec

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Re: 4WD always on
« Reply #16 on: December 16, 2010, 01:17:40 PM »
I got the switch off and getting continuity across the two terminals on it, whether I depress the switch or not.. Actually, the movable pin on the switch is not coming all the way out. If I pull it all the way out, the circuit will open but once I press it back in, it sticks in that position.

By the way, what is the 2nd switch on the TC for?
« Last Edit: December 16, 2010, 01:55:50 PM by 3stagevtec »

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Online fordem

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Re: 4WD always on
« Reply #17 on: December 16, 2010, 05:15:58 PM »
As far as I know there's only one switch on the transfer case - where did you find a second one?  If it's on the right side, you're probably looking at the speed sensor. 
'98 SQ420 Grand Vitara
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Offline 3stagevtec

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Re: 4WD always on
« Reply #18 on: December 17, 2010, 10:03:20 AM »
As far as I know there's only one switch on the transfer case - where did you find a second one?  If it's on the right side, you're probably looking at the speed sensor. 

yeah, it was on the right..

Many thanks for all the assistance!