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Discussion Starter · #1 ·
07.5 4 WD Not engaging. No light in switch. Anybody have info on testing switch with DMM? Also anyone have info on changing encoder on transfer case 4 wd motor?
 

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I can't seem to find the wiring schematic. ....
If you have no light, stay with the fuse.
 

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If you can look in your glove box and tell me which rpo code you have I can send you a schematic.
NR3. NQF. NQG. NQH
 

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It sounds like you Have a shorted wire. I would check the 1342. Follow the harness from fuse block to the tcm. And see if you can find anywhere that has rubbed through.
 

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Discussion Starter · #18 ·
I am sure it is, but I don't have a tech 2 code reader and not paying $200 for a code read.
 

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Discussion Starter · #19 ·
I did order new rotary switch from dealership for $23.00. So waiting to anything further til that comes in. Ohms in each position were a minimum of 250 to 1k ohms lower than specified.
 

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Discussion Starter · #20 ·
Still no 4wd. Replace switch ohmed out bad, transfer case control motor, and transfer case motor, and 4wd actuator. Fuses checked no bad but layout doesn't seem to match manuals. Checked all connectors I can find. Anyone know grounding points? Or any parts other than transfer case? Vin is 1GCHK23677F558203. At my wits ends.
 
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