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Logic ground 94 4x4

Dantheman1540

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Diagnosing my 4x4 system in my 94 electric shift, I come to testing pin 3 org/blk wire, on the 8 pin connector leading to the 4x4 module. The test is to connect pin 3 to a ground and it should read 0 ohms. Well I’m not getting any continuity between pin 3, and the bare spot in the floor pan I’m using as a ground location. Pin 2 is the “main ground” pin and it has perfect 0ohm continuity between it and the same ground spot used for testing pin 3.

The tech article doesn’t say exactly what to check for if pin 3fails the test, so before I start following that wire all over the place, does anyone have any ideas?
 


franklin2

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I am not getting what the test is doing. If you put pin 3 to ground, of course it's going to read zero to ground. Are you supposed to put the other end of this wire to ground and then read pin 3? To test the wire? Or is it already grounded back at the module? You are under the truck correct?
 

Dantheman1540

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I am not getting what the test is doing. If you put pin 3 to ground, of course it's going to read zero to ground. Are you supposed to put the other end of this wire to ground and then read pin 3? To test the wire? Or is it already grounded back at the module? You are under the truck correct?
So I am putting one test probe on pin 3, the other to the chassis to check continuity. Instead of reading 0ohms it’s not finding continuity at all.
 

lowspeedpursuit

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You shouldn't have to follow the wire terribly far. Orange/black from the Electric Shift Control Module is meant to ground to G203, which looks like it's about 2 feet forward of the module. If you want to be lazy you could also just say to hell with unwrapping it, cut it, and re-run the wire.

G203loc.jpg
 

Dantheman1540

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Funny you mention that because I just moved the carpet 3” more and found it clearly not bolted down
You shouldn't have to follow the wire terribly far. Orange/black from the Electric Shift Control Module is meant to ground to G203, which looks like it's about 2 feet forward of the module. If you want to be lazy you could also just say to hell with unwrapping it, cut it, and re-run the wire.

View attachment 85956


Funny you mention that because I just moved the carpet 3” more and found it clearly not bolted down. I’m an idiot
 

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lowspeedpursuit

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I'll take an easy win any day. I've certainly forgotten to put my fair share of bolts and caps and whatever else back, and wondered why my stuff is broken.
 

00t444e

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Put a manual shift transfer case in it.
 

Dantheman1540

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Put a manual shift transfer case in it.
Find me one with all the correct linkage and I will. Bonus points if it’s free.
 

Dantheman1540

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It all works now finally so I’m happy!
 

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