2011-2012 RAM 1500 service 4WD light is on

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dmatchett
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2011-2012 RAM 1500 service 4WD light is on

Post by dmatchett » Wed Feb 28, 2018 12:25 pm

This applies to all 2011-2012 Ram pickups equipped with a electronic transfer case where the service 4WD light is illuminated and DTC C2201 is set. When
the system detects this DTC it shuts down the 4WD capability for the remainder of the cycle drive. Updating the DTCM software will correct this problem.
1) Connect the wiTECH to the computer
2) Place the ignition switch to run position
3) Select DCTM
4) Select Data tab
5) Scroll down to "DTCM internal, DTC reason"
6) Does DTCM Internal Reason read Task Failure? If yes proceed to step 7. If "no" proceed with further diagnostics.
7) Reprogram the DTCM with the latest software.
8) After reprogramming , clear any DTC's that have set in other modules.

NOTE:
Install a battery charger to ensure that the battery voltage does not drop below 13.2 volts and does not exceed 13.5 volts
during the flash.

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dhritsko
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Location: Walton Hills , OH

Re: 2011-2012 RAM 1500 service 4WD light is on

Post by dhritsko » Thu Mar 01, 2018 12:31 pm

I'm hearing more issues with the Transfer Case Control modules on these newer types of units . I know shops update and check programming on the TCM but seem to forget about the TCCM
Dave Hritsko
Transtar Industries
Technical Service Manager

dmatchett
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Re: 2011-2012 RAM 1500 service 4WD light is on

Post by dmatchett » Mon Mar 05, 2018 10:49 am

That's true Dave, they are experiencing huge problems with the transfer cases BW4444 and we are working on
a fix for the clutch pack setup and hopefully will have something posted in the near future. Dealer is struggling
with inventory to supply demand, They keep replacing the clutches but does not rectify the problem, we now think
we have a solution to the problem.

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