4x4 switch not working '02 Dakota
Professional
Joined: Dec 2010
Posts: 237
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From: Nebraska
I know this thread is several years old, but I just bought a 2002 Dakota 4.7L, and am having the same issues. I followed the instruction in the post (which is fantastic and well detailed), I have the dash trim piece removed so I can see the TCCM module, but it's unclear to me how to actually remove it. It looks to be mounted to the inside of the dash behind the air vent hole. Is there some trick to removing it without continuing to take the dash apart? Any help or guidance would be much appreciated.
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Joined: Mar 2015
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Thanks for the response Eric. My issue ended up being a simple break in the wires under my vehicle which connected the TCCM to the transfer case 4wd motor (not sure what the actual name is for that component). I repaired the wires, and my 4wd capability was restored.
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Joined: Jan 2017
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OK So I am experinging the same problem with my 01 Dakota, the Service 4WD is on, my mechanic is able to put the truck in 2/4HI/4LO using his Snap On scanner thru the OBD Port,only code is "mode switch????", he changed both TCCM and switch..any ideas? I do not think it's anything under the truck..
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Joined: Nov 2022
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DVM voltage reading at the transfer case motor?
Hello,
Have removed the transfer case motor connector from my '01 Dakota. I don't see any voltage across the two pins when my son switches from 2wd to 4wd. I know this is a PWM signal to the transfer case
motor-would I be able to see the drive voltage with a DMM or does the motor load have to be present? Or should I just put an oscilloscope on it?
George
Have removed the transfer case motor connector from my '01 Dakota. I don't see any voltage across the two pins when my son switches from 2wd to 4wd. I know this is a PWM signal to the transfer case
motor-would I be able to see the drive voltage with a DMM or does the motor load have to be present? Or should I just put an oscilloscope on it?
George
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Joined: Nov 2022
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2WD, 4WD Indicators work, but shift transfer case intermittently ( only when warm )
Switch indicators work. If I have driven the truck 20-30 minutes, the indicator will switch from 2WD to 4WD and engage the front axle. So I think the TCCM is working ( indicators and shift motor ). I'm thinking the problem is the shift motor. I pulled the TCCM from under the dash and demated the motor connector from the TCCM. Am seeing continuity for both wires down at the shift motor connector-so the motor wires are good! When it's warm the 4WD works. I wanted to troubleshoot the electronics first before pulling the front drive shaft and removing the shift motor module on the transfer case . The truck has 210,000 miles.
George
George
