PCM flash to remove the SKIM and Column Lock Module (No crank, 2005 5.7L) - JeepForum.com
 
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post #1 of 5 Old 11-25-2019, 02:27 AM Thread Starter
TorqueTalk
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PCM flash to remove the SKIM and Column Lock Module (No crank, 2005 5.7L)

Please see my full post in regards to my No Crank condition and how I came to this drastic step:

https://www.jeepforum.com/forum/f67/...-5-7l-4377535/

What’s wrong:

1. The live data from the WCM reveals: “ NGC / SKREEM Status: Engine Kill Command ” *

2. The stored code in the WCM is: “ B2254 Column Lock Module Internal “ **

*The Next Generation Controller ( NGC ) is another name for the PCM. **The Column Lock Module ( EVL / ELV / ESCL / ESL ) is present in the RHD export version of the 05 WK known as the 05 WH, it locks the steering wheel in place when the key is out of the ignition. Mine is now unlocked at all times, alongside my No Crank issue. Please do not confuse this module with ignition cylinder.

Because of this “ ENGINE KILL COMMAND “ the dealer will want to replace (at a minimum) both the Column Lock Module and the WCM and program both with associated costs of $1700 (plus $400 worth of tows).

It seems my only option going forward is to send my PCM off to be programmed to forget the SKIM (and hopefully the Column lock module? ) entirely, which is a shame because it’s a useful security system.. in theory. Has anyone else with the WH (Column Lock Module) had this done?

Wireless Control Module ( WCM ) ( part # 56040638AW )

https://www.moparpartsinc.com/p/7560...6040638AW.html

The Column Lock Module ( EVL / ELV / ESCL / ESL )( part # 05057278AA )

https://www.moparpartsinc.com/p/7551...5057278aa.html

PCM ( part # 56044517AE software flashed to # 56044596AI )

https://www.moparpartsinc.com/p/6160...6044517AE.html


Last edited by TorqueTalk; 11-25-2019 at 03:13 AM.
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post #2 of 5 Old 11-28-2019, 10:45 PM
underscore
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If you disable it you may need to update your vehicle insurance, here I get a small discount because of the immobilizer system.

07 WK CRD//QDII//OME MD//MALONE 1.5//OMG WTF BBQ
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post #3 of 5 Old 12-06-2019, 02:51 PM
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So how did this go? I've considered the same thing after buying a refurbed PCM that didn't resolve my no start no crank issue.
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post #4 of 5 Old 12-30-2019, 10:44 PM Thread Starter
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Update: I have made contact with a handful of companies that offer the SKIM removal from PCM service. This service would usually involve my PCM being reprogrammed to no longer look for the SKIM system and once my PCM is returned to me, all I would have to do is unplug my SKIM and install the PCM back into my Jeep and start it up. The car would no longer have an immobiliser (the light would remain on but thats fixable by macgyvering the dash cluster) and that is a tiny price to pay for having a working car again. In any case, I can install an aftermarket immobiliser system with workarounds and redundancys that are in my control as the owner of the vehicle and not monopolised by specialist dealerships.

Heres the spanner in the works. I would presume that I would unplug my Column Lock Module ( EVL / ELV / ESCL / ESL) at the same time as the SKIM. But would that be enough? The PCM will be reprogrammed to forget the SKIM but I worry that another component of the car will be looking for the Column Lock Module and put me back at square one: No Crank, No Jeep and No Sleep.

Here are the plugs that would be involved in this procedure:

The Sentry Key Remote Entry Connector has an 8 way connector (Please see photo)

1 - -
2 D508 20WT/GY COM - LIN TIRE PRESSURE MONITOR LAN
3 F941 20PK/LG FUSED IGNITION SWITCH OUTPUT (RUN-START)
4 Z18 20BK/LB GROUND
5 A114 18GY/RD FUSED B(+)
6 D55 20WT/OR CAN B BUS (+)
7 D54 20WT CAN B BUS (-)
8 - -

The Column lock module (for RHD export WH models only) has a four way connector (please see photo)

1 A935 18RD FUSED B(+)
2 Z906 18BK GROUND
3 A306 18RD/VT FUSED B(+)
4 D506 20WT/DG COM - LIN STEERING COLUMN LAN

There is also a hidden connector somewhere (I havent found it) known as the Steering Column Lock Translator (for RHD export WH models only) which is a 6 way connector (no photo).

1 A108 20LG/RD FUSED B(+)
2 Z907 20BK GROUND
3 D506 20WT/DG COM - LIN STEERING COLUMN LAN
4 D55 20WT/OR CAN B BUS (+)
5 D54 20WT CAN B BUS (-)
6 - -

This connector is a secondary ignition switch connector (ELV EXPORT only) and is a 2 way attached to the ignition switch housing. (please see photo).

1 A306 18RD/VT FUSED B(+)
2 A935 18RD FUSED (+)

Here are the big questions:

Is the SKIM the only component that communicates with the Column Lock Module?
The wiring seems to indicate this is not the case as I have found that the Column lock modules Red wire ( A935 18RD FUSED B(+) ) and Red/Violet wire ( A306 18RD/VT FUSED B(+) ) are a direct link from the Column Lock Module to the 2 way ignition switch connector. I have also found that the White/Grey wire ( Pin 4, D508 20WT/GY ) from the Column Lock Module has continuity to the SKIM connector( Pin 2, D506 20WT/DG ) which is shared by the tire pressure monitoring network.

Despite this, reassuringly from the scan tool, trouble code(s) from the Column Lock Module are only written and read from the WCM / SKREEM according to my reports.

Can we confirm that the SKIM is the only component that communicates bi-directionally with the Column Lock Module?

After the PCM is de-skimmed, and the SKIM is unplugged will any of the cars components be looking for the (also unplugged at that stage) Column Lock Module, leading to another dreadful engine kill command to the PCM ?

To those who dabble, what do you think?

To those who offer this service and who know immobiliser systems inside and out, my posts regarding my No Crank, No Jeep, No Sleep issue at jeepforum, ********** and ausjeepoffroad have had many thousands of views so far and I would love to be able to promote a successful job done by your business.

Thanks in advance, hopefully this will be resolved for me early in the new year, and this info and your advice will help others in the future. I wish you all a fantastic decade ahead.
Attached Thumbnails
SKIM Connector.jpg   Steering Column Lock Module Connector.jpg   CL Tranlator.jpg   Ignition Switch 2 Way Connector.jpg  
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post #5 of 5 Old 12-31-2019, 09:40 AM
jtec
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this is the most interesting post I have looked at in a long time.

I am following but the WH (EVL ELC etc) seams to be lacking in my data base - even the code came up as not valid (B2254) IDK- but I am drawn to these issues. Keep us updated. I will add what I can BUT I feel you are more than capable, for a Australian

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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